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Sample records for bowen basin australia

  1. Evaluation of rock mass classification schemes: a case study from the Bowen Basin, Australia

    Science.gov (United States)

    Brook, Martin; Hebblewhite, Bruce; Mitra, Rudrajit

    2016-04-01

    The development of an accurate engineering geological model and adequate knowledge of spatial variation in rock mass conditions are important prerequisites for slope stability analyses, tunnel design, mine planning and risk management. Rock mass classification schemes such as Rock Mass Rating (RMR), Coal Mine Roof Rating (CMRR), Q-system and Roof Strength Index (RSI) have been used for a range of engineering geological applications, including transport tunnels, "hard rock" mining and underground and open-cut coal mines. Often, rock mass classification schemes have been evaluated on subaerial exposures, where weathering has affected joint characteristics and intact strength. In contrast, the focus of this evaluation of the above classification schemes is an underground coal mine in the Bowen Basin, central Queensland, Australia, 15 km east of the town of Moranbah. Rock mass classification was undertaken at 68 sites across the mine. Both the target coal seam and overlying rock show marked spatial variability in terms of RMR, CMRR and Q, but RSI showed limited sensitivity to changes in rock mass condition. Relationships were developed between different parameters with varying degrees of success. A mine-wide analysis of faulting was undertaken, and compared with in situ stress field and local-scale measurements of joint and cleat. While there are no unequivocal relationships between rock mass classification parameters and faulting, a central graben zone shows heterogeneous rock mass properties. The corollary is that if geological features can be accurately defined by remote sensing technologies, then this can assist in predicting rock mass conditions and risk management ahead of development and construction.

  2. Information from geology: Implications for soil formation and rehabilitation in the post coal mining environment, Bowen Basin, Australia

    International Nuclear Information System (INIS)

    The coal mining industry is likely to disturb as much as 60,000 ha of the Bowen Basin up to the year 2000. While comprising only a small proportion of the approximately 32,000 km2 of the Bowen Basin, this considerable area will eventually need to be rehabilitated by creating appropriate land forms with a stabilizing and self-sustaining cover of vegetation. The job of restoring the disturbed area will fall to the practitioners of rehabilitation science. This paper briefly outlines the actual and potential significance of geological information to rehabilitation practice in the open-cut coal mining industry of the Bowen Basin. It focuses particularly on the problems of soil formation and the consequent limitations to ecosystem development due to the nature of the overburden materials and the environment. Lastly, it describes some of the distinctive features of the mine-soils of the area. Geological information can assist in the identification, classification, description and behaviour of post-mining materials. Potential inputs are not restricted to these and there is scope for wider inputs to management of the mining environment although the interface with biology requires further development. (author). 4 figs., 31 refs

  3. Comparative studies on carbon origin of dawsonite between Hailaer Basin in China and Bowen-Gunnedah-Sydney basin system in Australia

    Institute of Scientific and Technical Information of China (English)

    Yuqiao GAO; Li LIU; Qi'an MENG; Yan XU; Xiyu QU; Xianmei JIN

    2007-01-01

    Dawsonite, NaAlCO3(OH)2, is widespread as a cement, replacement and cavity filling in Hailaer Basin in China and Bowen-Gunnedah-Sydney (BGS) basin system in Australia. The origin of dawsonite is emphatically contrasted and analyzed through stable isotopic composition. Dawsonite δ13C values ranging from -4.0×10-3 to 4.1×10-3 are remarkably consistent through the BGS basin system. The calculated δ13C values of CO2 gas in isotopic equilibrium with dawsonite range from -11.3×10-3 to -4.6×10-3. These values indicate carbon of dawsonite came from inorganic CO2 gas accompanied by magmatic activity. In Hailaer Basin, the Dawsonite δ13C values ranging from -4.64×10-3 to 2.12×10-3 are also consistent. The calculated δ13C values of CO2 gas in isotopic equilibrium with dawsonite range from -11.82×10-3 to -5.11×10-3. According to the coincidence of dawsonite-bearing well and CO2 gas well with mantle source,lying along deep fracture within or adjacent to Yanshanian granite,it is concluded that CO2 gas forming dawsonite is derived from mantle related to magmatic process during the Yanshanian. A little biologic origin carbon owing to petroleum charging intervened when dawsonite formed.

  4. Maceral Characteristics and Vitrinite Reflectance Variation of The High Rank Coals, South Walker Creek, Bowen Basin, Australia

    OpenAIRE

    Asep K. Permana; Ward, C. R.; L. W. Gurba

    2014-01-01

    DOI: 10.17014/ijog.v8i2.156The Permian coals of the South Walker Creek area, with a vitrinite reflectance (Rvmax) of 1.7 to 1.95% (low-volatile bituminous to semi-anthracite), are one of the highest rank coals currently mined in the Bowen Basin for the pulverized coal injection (PCI) market. Studies of petrology of this coal seam have identified that the maceral composition of the coals are dominated by inertinite with lesser vitrinite, and only minor amounts of liptinite. Clay minerals, quar...

  5. Coal bed methane enrichment regularities and controlling factors in Bowen-Surat basin, Australia%澳洲Bowen-Surat盆地煤层气富集规律及主控因素

    Institute of Scientific and Technical Information of China (English)

    李志华; 李胜利; 于兴河; 方欣欣

    2014-01-01

    澳大利亚是世界第四大煤炭生产国和世界上最大的煤炭输出国。2000年后,澳大利亚煤层气产业快速发展。Bowen-Surat盆地是澳大利亚最大的煤层气盆地。应用石油地质综合分析方法,总结了 Bowen-Surat 盆地的石油地质特征,进而分析了该盆地煤层气富集规律:平面上,煤层气富集在Taroom槽和Chinchilla-Goondiwindi斜坡中;剖面上,煤层气富集在二叠系Blackwater群和侏罗系Walloon组煤层中。针对煤层气藏在平面和剖面上的分布特点,结合沉积体系、气源岩、煤阶、孔隙度和渗透率等因素进行相关性分析,认为有8个因素主要控制了煤层气藏的分布,即:沉积控类型,气源控范围,煤阶、埋深和孔渗控含量,构造封闭控层位。%Bowen-Surat Basin is a superimposed rifting basin located in the eastern Australian and the largest CBM basins in Australia. The paper, through a comprehensive analysis of petroleum geology methods, summarizes Bowen-Surat basin petroleum geology characteristics, and then analyzes CBM enrichment regularities. In the plane CBM is enriched in the Taroom trough and Chinchilla-Goondiwindi slopes, vertically enriched in Permian Blackwater Group and Jurassic Walloon coal measures. Aiming at the planar and vertical distribution regularities of CBM reservoirs, combining with sedimentary system, gas source rock, coal rank, porosity, permeability and other factors and making the correlation analysis, the paper concluded that there are eight main factors controlling the distribution of CBM reservoirs, i.e., sedimentary control, distribution range controlled by gas source rock, coal rank, depth, porosity and permeability, horizon controlled by structure confining.

  6. Maceral Characteristics and Vitrinite Reflectance Variation of The High Rank Coals, South Walker Creek, Bowen Basin, Australia

    Directory of Open Access Journals (Sweden)

    Asep K. Permana

    2014-07-01

    Full Text Available DOI: 10.17014/ijog.v8i2.156The Permian coals of the South Walker Creek area, with a vitrinite reflectance (Rvmax of 1.7 to 1.95% (low-volatile bituminous to semi-anthracite, are one of the highest rank coals currently mined in the Bowen Basin for the pulverized coal injection (PCI market. Studies of petrology of this coal seam have identified that the maceral composition of the coals are dominated by inertinite with lesser vitrinite, and only minor amounts of liptinite. Clay minerals, quartz, and carbonates can be seen under the optical microscope. The mineral matter occurs in association with vitrinite and inertinite macerals as syngenetic and epigenetic mineral phases. The irregular pattern of the vitrinite reflectance profile from the top to the bottom of the seam may represent a response in the organic matter to an uneven heat distribution from such hydrothermal influence. Examination of the maceral and vitrinite reflectance characteristics suggest that the mineralogical variation within the coal seam at South Walker Creek may have been controlled by various geological processes, including sediment input into the peat swamp during deposition, mineralogical changes associated with the rank advance process or metamorphism, and/or hydrothermal effects due to post depositional fluid migration through the coal seam.

  7. Using Geomodelling and Geophysical Inversion to Evaluate the Geological Controls on Low-Sulphidation Epithermal Au-Ag mineralisation in the Drummond and Bowen Basins, Australia

    Science.gov (United States)

    Feltrin, Leonardo; Baker, Timothy; Oliver, Nick; Scott, Margaretha; Wilkinson, Kate; Fitzell, Melanie; Dixon, Owen; Bertelli, Martina

    2008-05-01

    We present a 3D geological model that integrates different datasets and incorporates geophysical inversion of airborne gravimetric and magnetic surveys of the northern part of the Drummond and Bowen basins. These basins are known for their endowment of low-sulphidation, epithermal Au-Ag mineralisation. The objective of this computer based reconstruction is to empirically evaluate the key controlling variables that contributed to the spatial localization of 147 Palaeozoic and Mesozoic shallow hydrothermal gold systems, found predominantly in veins and breccia hosted in basal volcanics and volcaniclastic intervals developed in a back-arc rift environment. The model provides a three-dimensional, regional scale (100,000 km2) perspective on the spatial associations between geology, structure, magmatism and known mineral occurrences, representing a 3D framework for precious-metals exploration. Results of 3D visualisation of geological and geophysical data suggest that magmatic intrusions, and correlative volcanic centres localized most of the major deposits and also controlled the arrangement of clusters of uneconomic Au-Ag occurrences. The empirical modelling supports a model for the genesis of low-sulphidation epithermal Au-Ag mineralisation that favours a strong spatial association with shallow felsic to intermediate magmatic intrusions, similarly to that proposed for high-sulphidation systems. Geophysical inversion estimates for the depth of magmatic bodies suggest also that they may have controlled the efficiency of the hydrothermal, mineralising systems-shallow intrusions tend to be associated with greater tonnages of Au-Ag and are spatially associated with the larger clusters of occurrences. However, the composition of magmatic intrusions (mafic, intermediate, felsic) may have been important in regulating the amount of available bisulphide in the volatile phase, exerting a control on Au grade/tonnage independent of the depth of emplacement of intrusions.

  8. Sydney-Gunnedah-Bowen Basin deep 3D structure

    Science.gov (United States)

    Danis, Cara

    2012-01-01

    Studies of the Sydney-Gunnedah-Bowen Basin (SGBB), one of the largest extensional rift sedimentary basins on the east coast of Australia, lack an understanding of the 3D upper crustal structure. Understanding of the subsurface structure is essential for many areas of resource exploration, development and management, as well as scientific research. Geological models provide a way to visualise and investigate the subsurface structure. The integrated regional scale gravity modelling approach, which uses boreholes and seismic data constraints, provides an understanding of the upper crustal structure and allows the development of a 3D geological model which can be used as the architectural framework for many different applications. This work presents a 3D geological model of the SGBB developed for application in high resolution thermal models. It is the culmination of geological surfaces derived from the interpolation of previous regional scale 2D gravity models and numerous borehole records. The model outlines the basement structure of the SGBB and provides information on depth to basement, depth to basal volcanics and thickness of overlying sediments. Through understanding the uncertainties, limitations, confidence and reliability of this model, the 3D geological model can provide the ideal framework for future research.

  9. Investigation of Bowen Basin coal mine fire gas analysis parameters

    Energy Technology Data Exchange (ETDEWEB)

    Cliff, D.; Bell, S.; O' Beirne, T. (ACIRL Ltd., North Ryde, NSW (Australia))

    1991-12-01

    Laboratory analysis of seven currently mined Bowen Basin coals has validated the use of carbon monoxide as the best indicator of the very early states of coal heating. As a primary warning indicator, other gases are rarely appropriate as they are emitted in such small quantities to make then very difficult to detect when diluted with typical mine ventilation quantities. Once a heating is suspected or confirmed, other gases and their various relationships can now be more confidently used to indicate peak temperatures and the progress of the heating. Interestingly, the order of evolution of many gases, from the Bowen Basin coals is quite different from overseas coals (as reported in the literature) and this impacts on the usefulness of many overseas generated interpretation techniques. All of the commonly used techniques for interpreting the status of a heating have been reviewed in the light of the research. These interpretative tools have very real limitations which have now been more clearly defined. The research has also demonstrated the need for accurate definitive mine gas analysis at the mine site. A fire ladder has been developed to enable the assessment of the heating coal temperature. The practical value of this research, as indicated above, needs to be concisely disseminated to industry. This should impact on the operation of mine environmental monitoring systems, and particularly on any software used to analyse gas results.

  10. Building 3D geological knowledge through regional scale gravity modelling for the Bowen Basin

    Science.gov (United States)

    Danis, Cara; O'Neill, Craig; Lackie, Mark

    2012-01-01

    Regional scale gravity modelling is an effective and fast way to gain geological understanding of large scale structures like the Bowen Basin. Detailed deep 3D geological knowledge has become an important component of many types of exploration and resource modelling. Current interest in the Bowen Basin for geothermal exploration highlights the need for a complete basin scale model which is compatible with thermal modelling software. The structure of the Bowen Basin is characteristic of a typical asymmetrical extensional rift basin, with up to 5km of sediment overlying the basement. By combining gravity modelling, calibrated by boreholes and seismic reflection profiles, we produce geologically reasonable 3D surfaces and structures to create a model of the Bowen Basin. This model is the final part in the completion of the 3D Sydney-Gunnedah-Bowen Basin system geological model and provides both an important framework from which detailed thermal models can be derived and a platform from which to expand with new information.

  11. Geothermal structure of Australia's east coast basins

    Science.gov (United States)

    Danis, C. R.; O'Neill, C.

    2010-12-01

    The east coast sedimentary basins of Australia formed on an active margin of eastern Gondwana, and constitute an important hydrocarbon resource. The 1600km long Sydney-Gunnedah-Bowen Basin (SGBB) is largest east coast basin system, with thick Permian to Jurassic sedimentary successions overlying Palaeozoic basement rocks. The SGBB has been the focus of renewed geothermal exploration interest, however, the thermal state and geothermal potential of the system is largely unconstrained. Geothermal exploration programs require an accurate estimate of subsurface temperature information, in addition to favourable geology, to make informed decisions on potential targe developments. Primarily temperature information comes from downhole measurements, generally non-equilibrated, which are traditionally extrapolated to depth, however such extrapolation does not take into account variations in geological structure or thermal conductivity. Here we import deep 3D geological models into finite element conduction simulations, using the code Underworld, to calculate the deep thermal structure of the basin system. Underworld allows us to incorporate complex, detailed geological architecture models, incorporating different material properties for different layers, with variable temperature and depth-dependent properties. We adopt a fixed top boundary temperature on a variable topographic surface, and vary the bottom surface boundary condition, to converge of models which satisfy equilibrated downhole temperature measurement constraints. We find coal plays an important role in insulating sedimentary basins. Heat refracts around the coal interval and produces elevated temperatures beneath thick sediments, especially where thick coal intervals are present. This workflow has been formalized into an Underworld geothermal model library, enabling model centric computational workflows. Using the imported model architecture from the geology, data can be continuously updated and added to the

  12. In-situ analysis of solid bitumen in coal: Examples from the Bowen Basin and the Illinois Basin

    Science.gov (United States)

    Mastalerz, Maria; Glikson, M.

    2000-01-01

    Solid bitumen and associated vitrinite from selected coals from the Bowen Basin and the Illinois Basin were studied using electron microprobe and micro-FTIR techniques. The coal studied covers a range of vitrinite reflectance from 0.59% to 1.33%. Carbon content in the bitumen is generally lower than in vitrinite in coals with vitrinite reflectance below 0.67%. In coals with reflectance above 0.67%, carbon content of bitumen is higher than in vitrinite, reflecting higher aromaticity due to hydrocarbon generation. Sulfur and iron content are comparable between vitrinite and bitumen. Functional group distribution suggests the presence of two types of bitumen in the Illinois Basin coals. The more aliphatic variety occurring in veins and cleats is interpreted as pre-gas generation bitumen, and the more aromatic variety filling cells and voids in inertinite as post-gas generation bitumen. (C) 2000 Elsevier Science B.V. All rights reserved.Solid bitumen and associated vitrinite from selected coals from the Bowen Basin and the Illinois Basin were studied using electron microprobe and micro-FTIR techniques. The coal studied covers a range of vitrinite reflectance from 0.59% to 1.33%. Carbon content in the bitumen is generally lower than in vitrinite in coals with vitrinite reflectance below 0.67%. In coals with reflectance above 0.67%, carbon content of bitumen is higher than in vitrinite, reflecting higher aromaticity due to hydrocarbon generation. Sulfur and iron content are comparable between vitrinite and bitumen. Functional group distribution suggests the presence of two types of bitumen in the Illinois Basin coals. The more aliphatic variety occurring in veins and cleats is interpreted as pre-gas generation bitumen, and the more aromatic variety filling cells and voids in inertinite as post-gas generation bitumen.

  13. Thermal History of Drummond Basin, Queensland (Australia) from Apatite and Zircon (U-Th)/He Thermochronology

    Science.gov (United States)

    Zhang, W.; Min, K. K.; Bryan, S. E.

    2014-12-01

    The thermal history of the Drummond Basin in central Queensland (Australia) has only been partly investigated. Inverse thermal modeling of apatite and zircon (U-Th)/He data can reveal the complex thermal history of sedimentary basins. We performed (U-Th)/He dating for detrital apatite and zircon grains extracted from five sandstone samples from the Campaspe DDH-1 drill hole. Mean apatite helium ages generally increase from 65.9 Ma (depth = 538 m) to 83.8 Ma (depth = 263 m). The deeper four samples yielded mean zircon helium (ZHe) ages of 289.7 - 278.2 Ma, with a systematic increase of the ZHe ages from deep to shallow samples. The shallowest sample (depth = 117 m) yielded a mean ZHe age of 263.6 Ma. Our inverse thermal modeling suggests five thermal events since burial: (1) rapid heating to the maximum temperature of 180~380 oC during ~320-290 Ma, (2) rapid cooling from ~260 oC to ~80 oC during ~290-240 Ma, (3) subdued cooling from ~80 oC to ~30 oC during ~240-200 Ma, (4) slow heating from ~30 oC to ~80 oC during ~200-80 Ma, followed by (5) rapid cooling from ~80 oC to ~35 oC at ~80 Ma. The timing and temperature conditions of the initial thermal event are consistent with K/Ar ages and temperatures deduced from illite. This period was characterized by voluminous regional magmatism and crustal extension preceding opening of the overlying Bowen Basin. Rapid cooling during ~290-240 Ma identified by our inverse thermal modeling roughly coincides with the thermal relaxation phase and foreland basin phase of the overlying Bowen Basin. This rapid cooling was probably a result of cessation of extension and subsequent contractional events to the east of Bowen Basin. Cooling slowed down during ~240-200 Ma. The Drummond Basin probably underwent serious erosion during this period, coeval with the peneplanation phase of the Bowen Basin. As is delineated by our modeling, the Drummond Basin was slowly heated from ~20 oC to ~90 oC during ~200-80 Ma, synchronous with development of

  14. The thermal history of the Bowen Basin: a comparison of apatite fission track analysis and vitrinite reflectance

    International Nuclear Information System (INIS)

    Vitrinite reflectance and apatite fission-track analysis (AFTA) are two techiques widely used to assess paleotemperatures of the order of 20-120 deg.C. in sedimentary basins. Whereas vitrinite reflectance is essentially a qualitative technique that gives an integrated measure of the entire thermal history, AFTA can reveal information on the variation of paleotemperatures through time because fission-tracks in apatite are continually produced throughout geological time. An apatite fission track study of the Upper Permian units of the Bowen Basin has offered the opportunity to compare the two paleotemperature indicators and place constraints on the timing of maximum paleotemperatures. The regional pattern of apatite fission-track ages closely coincides with the vitrinite reflectance indicating that maximum paleotemperatures have varied across the Basin with the central region of the Bowen Basin experiencing highest paleotemperatures. The reduction in apatite reflectance fission-track age with increasing reflectance represents the progressive annealing at temperatures around 60-120 deg. C. of those fission-tracks formed prior to the time of maximum temperatures. In those samples giving the youngest apatite fission-track ages all tacks were totally annealed at this time, and the fission-track age in these samples, in the range 90-120 Myr, indicate the time of cooling from the thermal maximum in the Early Cretaceous. 1 ref

  15. A Side-by-side Comparison of Eddy Covariance and Bowen Ratio Evapotranspiration From a Northern Great Basin Ecosystem

    Science.gov (United States)

    Lyles, B. F.; Jasoni, R. L.

    2008-12-01

    Development of new ground water resources in rural lands surrounding urban areas of the arid western United States has been identified as a key to maintaining urban growth. The extent and rate at which ground water can be sustainably extracted, while minimizing environmental impacts, depends to a large degree on how much of the existing resource escapes back to the atmosphere via the process of evapotranspiration (ET). ET is the sum of water that evaporates (E) from soil surfaces and is transpired (T) from plant leaves. This study was conducted in a northeast/southwest trending closed basin, bounded by mountains on all sides, with no surface water outflow. The playa which is located in the center of the basin encompasses 59,600 hectares, while phreatophytic plants bordering the playa encompass 20,000 hectares. ET data was collected from a sagebrush/greasewood plant community from October 2004 to August 2008 by the Bowen Ratio technique. Eddy covariance ET monitoring equipment was installed in April of 2007 and a side-by-side comparison was conducted from April to October, 2007. At the end of the study period a 25% difference in ET was calculated between the eddy covariance and Bowen ratio techniques. The major factors for the differences in ET from the two different methods will be presented.

  16. Rifting Thick Lithosphere - Canning Basin, Western Australia

    Science.gov (United States)

    Czarnota, Karol; White, Nicky

    2016-04-01

    The subsidence histories and architecture of most, but not all, rift basins are elegantly explained by extension of ~120 km thick lithosphere followed by thermal re-thickening of the lithospheric mantle to its pre-rift thickness. Although this well-established model underpins most basin analysis, it is unclear whether the model explains the subsidence of rift basins developed over substantially thick lithosphere (as imaged by seismic tomography beneath substantial portions of the continents). The Canning Basin of Western Australia is an example where a rift basin putatively overlies lithosphere ≥180 km thick, imaged using shear wave tomography. Subsidence modelling in this study shows that the entire subsidence history of the Canning Basin is adequately explained by mild Ordovician extension (β≈1.2) of ~120 km thick lithosphere followed by post-rift thermal subsidence. This is consistent with the established model, described above, albeit with perturbations due to transient dynamic topography support which are expressed as basin-wide unconformities. In contrast the Canning Basin reveals an almost continuous period of normal faulting between the Ordovician and Carboniferous (βCanning Basin to rifting of thick lithosphere beneath the eastern part, verified by the presence of ~20 Ma diamond-bearing lamproites intruded into the basin depocentre. In order to account for the observed subsidence, at standard crustal densities, the lithospheric mantle is required to be depleted in density by 50-70 kg m-3, which is in line with estimates derived from modelling rare-earth element concentrations of the ~20 Ma lamproites and global isostatic considerations. Together, these results suggest that thick lithosphere thinned to > 120 km is thermally stable and is not accompanied by post-rift thermal subsidence driven by thermal re-thickening of the lithospheric mantle. Our results show that variations in lithospheric thickness place a fundamental control on basin architecture

  17. Pigmented Bowen's disease*

    OpenAIRE

    Mota, Amanda Nascimento Cavalleiro de Macedo; Piñeiro-Maceira, Juan; Alves, Maria de Fatima Guimarães Scotelaro; Tarazona, Mónica Jidid Mateus

    2014-01-01

    Pigmented Bowen's disease is rare, though more prevalent in men. It presents as a well-delineated plaque in areas unexposed to sun. There are reports of association with seborrheic keratosis, solar lentigo or exuberant pigmentation of genital and intertriginous regions. A specific dermoscopy finding is the presence of brown or gray dots in regular arrangement and coiled or dotted vessels. Thus, we aim to raise awareness of the diagnosis of pigmented Bowen's disease in pigmented lesions.

  18. Earthquake-controlled event deposits and its tectonic significance from the Middle Permian Wandrawandian Siltstone in the Sydney Basin, Australia

    Institute of Scientific and Technical Information of China (English)

    DU; Yuansheng; G.; R.; Shi; GONG; Yiming

    2005-01-01

    The Sydney-Bowen basin in eastern Australia is an elongate back arc-converted foreland basin system situated between the Lachlan Fold Belt in the west and the New England Fold Belt in the east. The Middle Permian Wandrawandian Siltstone at Warden Head near Ulladulla in the southern Sydney Basin is dominated by fossiliferous siltstone and mudstone, with a large amount of dropstones and minor pebbly sandstone beds. Two general types of deposits are recognized from the siltstone unit in view of the timing and mechanism of formation. One is represented by the primary deposits from offshore to subtidal environments with abundant dropstones of glacial marine origin. The second type is distinguished by secondary, soft-sediment deformational deposits and structures, and comprises three layers of mudstone dykes of seismic origin. In the latter type, metre scale, laterally extensive syn-depositional slump deformation structures occur in the middle part of the Wandrawandian Siltstone. The deformation structures vary in morphology and pattern, including large-scale complex-type folds, flexural stratification, concave-up structures, faulting of small displacements accompanied by folding and brecciation. The slumps and associated syn-sedimentary structures are attributed to penecontemporaneous deformations of soft sediments (mostly silty mud) formed as a result of mass movement of unconsolidated and/or semi-consolidated substrate following an earthquake event. The occurrence of the earthquake event deposits supports the current view that the Sydney Basin was located in a back-arc setting near the New England magmatic arc on an active continental margin during the Middle Permian.

  19. Upper Devonian microvertebrates from the Canning Basin, Western Australia

    Science.gov (United States)

    Roelofs, Brett; Playton, Ted; Barham, Milo; Trinajstic, Kate

    2015-03-01

    A diverse microvertebrate fauna is described from the Virgin Hills and Napier formations, Bugle Gap Limestone Canning Basin, Western Australia. Measured sections at Horse Spring and Casey Falls (Virgin Hills Formation) and South Oscar Range (Napier Formation) comprise proximal to distal slope carbonates ranging in age from the Late Devonian Frasnian to middle Famennian. A total of 18 chondrichthyan taxa are identified based on teeth, including the first record of Thrinacodus tranquillus, Cladoides wildungensis, Protacrodus serra and Lissodus lusavorichi from the Canning Basin. A new species, Diademodus dominicus sp. nov. is also described and provides the first record of this genus outside of Laurussia. In addition, the upper range of Australolepis seddoni has been extended to Late Devonian conodont Zone 11, making it the youngest known occurrence for this species. The Virgin Hills and Napier formations microvertebrate faunas show close affinities to faunas recovered from other areas of Gondwana, including eastern Australia, Iran, Morocco and South China, which is consistent with known conodont and trilobite faunas of the same age.

  20. Assessment of undiscovered conventional oil and gas resources of Bonaparte Basin, Browse Basin, Northwest Shelf, and Gippsland Basin Provinces, Australia, 2011

    Science.gov (United States)

    Pollastro, Richard M.; Brownfield, Michael E.; Charpentier, Ronald R.; Cook, Troy A.; Klett, Timothy R.; Kirschbaum, Mark A.; Pitman, Janet K.; Schenk, Christopher J.

    2012-01-01

    Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 4.7 billion barrels of undiscovered oil and 227 trillion cubic feet of undiscovered natural gas in three major offshore petroleum basins of northwest Australia and in the Gippsland Basin of southeast Australia.

  1. Assessment of continuous oil and gas resources of the Cooper Basin, Australia, 2016

    Science.gov (United States)

    Schenk, Christopher J.; Tennyson, Marilyn E.; Mercier, Tracey J.; Klett, Timothy R.; Finn, Thomas M.; Le, Phuong A.; Brownfield, Michael E.; Gaswirth, Stephanie B.; Marra, Kristen R.; Hawkins, Sarah J.; Leathers-Miller, Heidi M.

    2016-07-15

    Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean continuous resources of 482 million barrels of oil and 29.8 trillion cubic feet of gas in the Cooper Basin of Australia.

  2. Assessment of undiscovered conventional oil and gas resources of the Cooper and Eromanga Basins, Australia, 2016

    Science.gov (United States)

    Schenk, Christopher J.; Tennyson, Marilyn E.; Mercier, Tracey J.; Klett, Timothy R.; Finn, Thomas M.; Le, Phuong A.; Brownfield, Michael E.; Gaswirth, Stephanie B.; Marra, Kristen R.; Hawkins, Sarah J.; Leathers-Miller, Heidi M.; Pitman, Janet K.

    2016-05-12

    Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean conventional resources of 68 million barrels of oil and 964 billion cubic feet of gas in the Cooper and Eromanga Basins of Australia.

  3. Model decay in the Australia-Antarctic basin

    Energy Technology Data Exchange (ETDEWEB)

    Weijer, Wilbert [Los Alamos National Laboratory; Gille, Sarah T [UCSD; Vivier, Frederic [LOCEAN-IPSL

    2008-01-01

    The barotropic intraseasonal variability in the Australia-Antarctic Basin (AAB) is studied in terms of the excitation and decay of topographically-trapped barotropic modes. The main objective is to reconcile two widely differing estimates of the decay rate of SSH anomalies in the AAB that are assumed to be related to barotropic modes. First, an Empirical Orthogonal Function (EOF) analysis is applied to almost 15 years of altimeter data. The analysis suggests that several modes are involved in the variability of the AAB, each related to distinct areas with (almost) closed contours of potential vorticity. Second, the dominant normal modes of the AAB are determined in a barotropic shallow-water (SW) model. These stationary modes are confined by the closed contours of potential vorticity that surround the eastern AAB, and the crest of the Southeast Indian Ridge. For reasonable values of horizontal eddy viscosity and bottom friction, their decay time scale is of the order of several weeks. Third, the SW model is forced with realistic winds and integrated for several years. Projection of the modal velocity patterns onto the output fields shows that the barotropic modes are indeed excited in the model, and that they decay slowly on the frictional O(3 weeks) time scale. However, the SSH anomalies in the modal areas display rapid O(4 days) decay. Additional analysis shows that this rapid decay reflects the adjustment of unbalanced flow components through the emission of Rossby waves. Resonant excitation of the dominant free modes accounts for about 20% of the SSH variability in the forced model run. Other mechanisms are suggested to explain the region of high SSH variability in the AAB.

  4. Paleomagnetic and geochronological study of Carboniferous forearc basin rocks in the Southern New England Orogen (Eastern Australia)

    Science.gov (United States)

    Pisarevsky, Sergei A.; Rosenbaum, Gideon; Shaanan, Uri; Hoy, Derek; Speranza, Fabio; Mochales, Tania

    2016-06-01

    We present results of a paleomagnetic study from Carboniferous forearc basin rocks that occur at both limbs of the Texas Orocline (New England Orogen, eastern Australia). Using thermal and alternating field demagnetizations, two remanence components have been isolated from rocks sampled from the Emu Creek terrane, in the eastern limb of the orocline. A middle-temperature Component M is post-folding and was likely acquired during low-temperature oxidation at 65-35 Ma. A high-temperature Component H is pre-folding, but its comparison with the paleomagnetic data from coeval rocks in the northern Tamworth terrane on the other limb of Texas Orocline does not indicate rotations around a vertical axis, as expected from geological data. A likely explanation for this apparent discrepancy is that Component H postdates the oroclinal bending, but predates folding in late stages of the 265-230 Ma Hunter Bowen Orogeny. The post-Kiaman age of Component H is supported by the presence of an alternating paleomagnetic polarity in the studied rocks. A paleomagnetic study of volcanic and volcaniclastic rocks in the Boomi Creek area (northern Tamworth terrane) revealed a stable high-temperature pre-folding characteristic remanence, which is dated to c. 318 Ma using U-Pb zircon geochronology. The new paleopole (37.8°S, 182.7°E, A95 = 16.2°) is consistent with previously published poles from coeval rocks from the northern Tamworth terrane. The combination of our new paleomagnetic and geochronological data with previously published results allows us to develop a revised kinematic model of the New England Orogen from 340 Ma to 270 Ma, which compared to the previous model, incorporates a different orientation of the northern Tamworth terrane at 340 Ma.

  5. Isotope hydrology of the Great Artesian Basin, Australia

    International Nuclear Information System (INIS)

    The isotope hydrology of the Great Artesian Basin has been systematically investigated. Because of the size of the Basin and the long residence times of the groundwater, carbon-14 techniques can be used only to delineate recharge areas. Isochrones over the whole basin have been developed with chlorine-36 and compared with the calculated ages. The results of surveys of dissolved hydrocarbons and uranium series nuclides are reported

  6. A Case of Pigmented Bowen's Disease

    OpenAIRE

    Lee, Jung Woo; Hur, Jae; Yeo, Kwang Yeoll; Yu, Hee Joon; Kim, Joung Soo

    2009-01-01

    Pigmented Bowen's disease is characterized by increased melanin pigment in the epidermis or papillary dermis, in addition to the typical findings of Bowen's disease. This disorder has been infrequently reported and it represents less than 2% of all cases of Bowen's disease. Thus far, there has been only 1 case of pigmented Bowen's disease on the umbilicus in the medical literature, and no such case has been reported in Korea. Pigmented Bowen's disease develops on sun-exposed areas of the face...

  7. Middle Ordovician brachiopods from the Stairway Sandstone, Amadeus Basin, central Australia

    DEFF Research Database (Denmark)

    Jakobsen, Kristian Grube; Brock, Glenn A.; Nielsen, Arne Thorshøj;

    2014-01-01

    Middle Ordovician brachiopod faunas from the Amadeus Basin, central Australia are poorly known. The Darriwilian Stairway Sandstone was sampled stratigraphically for macrofossils in order to provide new information on marine benthic diversity in this clastic-dominated, shallow-water palaeoenvironm......Middle Ordovician brachiopod faunas from the Amadeus Basin, central Australia are poorly known. The Darriwilian Stairway Sandstone was sampled stratigraphically for macrofossils in order to provide new information on marine benthic diversity in this clastic-dominated, shallow......-water palaeoenvironment along the margin of northeastern Gondwana. The brachiopods from the Stairway Sandstone are of low diversity and represent ca 9% of the entire shelly fauna. Five brachiopod taxa are described from the Stairway Sandstone; all are endemic to the Amadeus Basin at species level. Two new species...

  8. Water Markets: Australia's Murray Darling Basin and the US Southwest

    OpenAIRE

    R. Quentin Grafton; Clay Landry; Gary D. Libecap; R. J. (Bob) O'Brien

    2009-01-01

    Fresh water supplies increasingly are under stress in many parts of the world due to rising populations, higher per capita incomes and corresponding consumption, greater environmental concerns, and the effects of climate change. Water rights and markets are part of the institutional menus for responding to these problems. We examine water markets in both Australia's MDB and the western US and their prospects for addressing water scarcity. The two regions share a number of important similariti...

  9. Reviewing the adoption and impact of water markets in the Murray-Darling Basin, Australia

    Science.gov (United States)

    Wheeler, S.; Loch, A.; Zuo, A.; Bjornlund, H.

    2014-10-01

    Water markets have increasingly been adopted as a reallocation tool around the world as water scarcity intensifies. Water markets were first introduced in Australia in the 1980s, and water entitlement and allocation trade have been increasingly adopted by both private individuals and governments. As well as providing an overview of water policy in Australia since the 1900s, this paper examines the adoption of water trading in the southern Murray-Darling Basin of Australia (the largest hydrologically connected water market in Australia), and investigates the associated social, economic and environmental impacts that have arisen from the implementation of water markets. This study found that up to 86% of irrigators in one state in the southern Murray-Darling Basin had undertaken at least one water market trade by 2010-2011, hence, water market strategies are now a common tool employed by irrigators to assist their farm management. A variety of institutional, policy and informational changes are identified to increase the benefits from water markets in the future. There is no doubt that managing the impact of climate change and water scarcity are intertwined, suggesting that policy, institutional and governance responses should be similarly structured and coordinated.

  10. A chrono-tectonostratigraphic framework for the Sydney Basin

    Science.gov (United States)

    Mohammad, O. A.; Jones, B. G.; Fergusson, C. L.

    2013-12-01

    The Sydney Basin is a foreland basin forming the southern part of the Bowen-Gunnedah-Sydney Basin system in Eastern Australia. Tectonically the Sydney Basin is regarded as a retro-arc foreland basin that developed through Late Carboniferous to Middle Triassic. Constructing a tectonstratigraphic framework for the basin is difficult due to the complex stratigraphy and poor age control, along with its complex tectonic history. A chrono-tectonostratigraphic framework for the Sydney Basin is presented based on literature synthesis combined with new data analysis. The chrono-tectonostratigraphic framework will provide an up-to-date and easy to follow detailed basin history which can be utilize in the exploration for conventional and unconventional resources in the Sydney Basin.

  11. The Geohydrology of MVT-Ore Genesis in the Canning Basin, Western Australia

    Science.gov (United States)

    Garven, G.; Wallace, M. M.

    2009-05-01

    In the Lennard Shelf, Western Australia, epigenetic MVT-type Pb-Zn mineralization occurs in Middle Devonian evaporitic dolomites which were part of a barrier reef system (Hurley & Lohmann, 1989). Ore mineralization exhibits a strong structural control at the basin scale and normal faults probably controlled pathways for brine and petroleum migration that affected ore deposition (Wallace et al., 1999). For the Canning basin, finite element simulations show that compaction was the most important process for creating overpressures and driving basinal fluids in this thick extensional basin. Basinal fluids are shown to have been driven across the Fitzroy Trough through permeable and deeply buried Silurian-Ordovician aquifer units. The fluids then migrated upwards at rates of m/yr up during periods of episodic extension (Braun, 1992) where fluid flow was channeled by major normal fault zones like the Cadjebut and Pinnacles Faults. Reactive flow simulations test a petroleum-reservoir model for mineralization whereby metal-bearing brines mix with accumulated hydrocarbons (Anderson & Garven, 1987). The results show that compaction-driven flow, as proposed by Beales & Jackson (1966) and Jackson & Beales (1967), works rather well in this ore district--other mechanisms such as sealevel tidal pumping (Cathles, 1988) or topographic drive (Solomon & Groves, 1994) are more tenuous and really unnecessary from a mass transport or geohydrologic basis.

  12. A case of Bowen"s disease responding well to radiotherapy

    OpenAIRE

    Kalkan, Göknur; PANCAR, Günseli Şefika

    2013-01-01

    Bowen"s disease is a form of intraepidermal squamous cell carcinoma which is known as carsinoma in situ. The head, neck, and extremities are the most commonly affected anatomic locations. Treatment options for Bowen"s disease include observation, surgery, cryotherapy, electrodesiccation and curettage, topical application of 5-fluorouracil or imiquimod, Moh"s micrographic surgery, photodynamic therapy, and radiotherapy. Radiation therapy is advantageous in patients who refuse surgery, for larg...

  13. Uranium supply and demand projections in the pacific basin Australia's role

    International Nuclear Information System (INIS)

    By the year 2000 O.E.C.D. estimates indicate that somewhere between 22% to 33% of the world's base load electrical energy will originate from nuclear power plants. In all major pacific basin countries, Australia has the world's largest known uranium reserves and is currently supplying around 12% of world uranium production. She should be preparing to compete on the world markets for uranium sales and should anticipate increased uranium fuel demands despite the possibility the Canada and China might further penerate this market. (Liu Wencai)

  14. Bowen s Disease: An Uncommon Presentation

    OpenAIRE

    Kılınç, Nihal; Pınar, Özden Zeki

    2004-01-01

    Objective: Bowen's disease described by bowen originally in 1912 is an intradermal squamous cell carcinoma. We aimed to discuss a case of bowen's disease with uncommon presentation in the light of recent literature. Observation a 65-year-old male presented with a lesion over the skin of the abdomen for 5-6 years duration. The lesion gradually enlarged over the years and was asymptomatic. It had been treated and misdiagnosed by different centers, which had resulted in partial r...

  15. Recharge sources and hydrogeochemical evolution of groundwater in alluvial basins in arid central Australia

    Science.gov (United States)

    Vanderzalm, J. L.; Jeuken, B. M.; Wischusen, J. D. H.; Pavelic, P.; Le Gal La Salle, C.; Knapton, A.; Dillon, P. J.

    2011-01-01

    SummaryIt is necessary to define the role of various sources of recharge in the surficial alluvial aquifer system in arid Alice Springs in central Australia, for future management of water resources in the region. Multiple sources of natural recharge include infiltration from ephemeral stream flow in the Todd River; groundwater throughflow between connected alluvial basins; regional groundwater flow from the underlying Tertiary aquifer; and diffuse recharge. In addition treatment, storage and irrigation reuse of Alice Springs' waste water has resulted in additional recharge of effluent, via infiltration. Water resource management plans for the region include effluent reuse through Soil Aquifer Treatment (SAT) within one of the connected alluvial basins, with the purpose of managing the excess waste water overflows while also supplementing groundwater resources for irrigation and protecting their quality. Hydrogeochemical tracers, chloride and the stable isotopes of water, were used in a three-member mixing model to define and quantify the major recharge sources. The mixing model was not sensitive enough to quantify minor contributions from effluent in groundwater that were identified only by an evaporated isotopic signature. The contribution of the multiple recharge sources varied spatially with proximity to the recharge source; with Todd River, effluent and Town Basin throughflow contributing to the Inner Farm Basin groundwater. The Outer Farm Basin was largely influenced by the Todd River, the Inner Farm Basin throughflow and the older Tertiary aquifer. While Inner Farm groundwater throughflow contains an effluent component, only Outer Farm Basin groundwater near the interface between the two basins clearly illustrated an effluent signature. Aside from this, effluent recharge was not evident in the Outer Farm Basin, indicating that past unmanaged recharge practices will not mask signs of Managed Aquifer Recharge through the Soil Aquifer Treatment (SAT) operation

  16. 3-D Imaging of Cleat and Micro-cleat Characteristics, South Walker Creek Coals, Bowen Basin, Australia: Microfocus X-ray Computed Tomography Analysis

    Directory of Open Access Journals (Sweden)

    Asep Kurnia Permana

    2014-06-01

    Full Text Available DOI: 10.17014/ijog.v7i1.131The Permian coals of the South Walker Creek area have a moderately to highly developed cleat system. The cleat fractures are well developed in both bright and dull bands, and generally parallel, inclined or perpendicular to the bedding planes of the seam, with the spaces open or filled by mineral matter, such as clay and carbonate minerals. Microfocus X-ray computed tomography (CT technique was performed to identify cleat characteristics in the coal seams. This technique allows visualizing of microcleat distribution and mineralization in three dimensional images. Cleat mineralization in the coal seam occurs either as single mineral (monomineralic or intermixed mineral (polymineralic masses. The cross cutting relationship was shown by X-ray CT scan analysis. The timing of microcleat formation in the coal seam from early to late is carbonate minerals, clay minerals (kaolinite plus minor high density (rutile or anatase phases. Thus, a high resolution of microfocus X-ray CT does not only provides a better visualization, but also could identify microcleat orientation, cleat mineralization, and generation of microcleat.

  17. 3-D Imaging of Cleat and Micro-cleat Characteristics, South Walker Creek Coals, Bowen Basin, Australia: Microfocus X-ray Computed Tomography Analysis

    OpenAIRE

    Asep Kurnia Permana

    2014-01-01

    DOI: 10.17014/ijog.v7i1.131The Permian coals of the South Walker Creek area have a moderately to highly developed cleat system. The cleat fractures are well developed in both bright and dull bands, and generally parallel, inclined or perpendicular to the bedding planes of the seam, with the spaces open or filled by mineral matter, such as clay and carbonate minerals. Microfocus X-ray computed tomography (CT) technique was performed to identify cleat characteristics in the coal seams. This tec...

  18. Minimal groundwater leakage restricts salinity in a hydrologically terminal basin of northwest Australia

    Science.gov (United States)

    Skrzypek, Grzegorz; Dogramaci, Shawan; Rouillard, Alexandra; Grierson, Pauline

    2016-04-01

    The Fortescue Marsh (FM) is one of the largest wetlands of arid northwest Australia (~1200 km2) and is thought to act as a terminal basin for the Upper Fortescue River catchment. Unlike the playa lake systems that predominate in most arid regions, where salinity is driven by inflow and evaporation of groundwater, the hydrological regime of the FM is driven by inundation from irregular cyclonic events [1]. Surface water of the FM is fresh to brackish and the salinity of the deepest groundwater (80 m b.g.l.) does not exceed 160 g/L; salt efflorescences are rarely present on the surface [2]. In this study, we tested the hypothesis that persistent but low rates of groundwater outflow have restricted the accumulation of salt in the FM over time. Using hydrological, hydrochemical data and dimensionless time evaporation modelling along with the water and salt budget, we calculated the time and the annual groundwater discharge volume that would be required to achieve and maintain the range of salinity levels observed in the Marsh. Groundwater outflow from alluvial and colluvial aquifers to the Lower Fortescue catchment is limited by an extremely low hydraulic gradient of 0.001 and is restricted to a relatively small 'alluvial window' of 0.35 km2 because of the elevation of the basement bedrock at the Marsh outflow. We show that if the Marsh was 100% "leakage free" i.e., a true terminal basin for the Upper Fortescue Catchment, the basin water would have achieved salt saturation after ~45 ka. This is not the case and only a very small outflow of saline groundwater of conditions. The minimum time required to develop the current hydrochemical composition of the water in the Marsh and the steady-state conditions for salt concentration is between 58 and 164 ka. This is a minimum age of the Marsh but it can be much older as nearly steady-state conditions could be maintained infinitely. Our approach using a combined water and salt mass balance allows a more robust assessment of

  19. Giant Hidroacanthoma Simplex Mimicking Bowen's Disease

    OpenAIRE

    Niiyama, Shiro; Oharaseki, Toshiaki; Mukai, Hideki

    2015-01-01

    Hidroacanthoma simplex is a benign tumor of the skin, macroscopically resembling seborrheic keratosis or Bowen's disease and histologically mimicking clonal-type seborrheic keratosis. We observed a plaque of 70 × 50 mm on the right flank part. From clinical appearance, we suspected Bowen's disease; however, based on immunohistochemical findings, we made a diagnosis of hidroacanthoma simplex.

  20. Groundwater flow and solute transport at the Mourquong saline-water disposal basin, Murray Basin, southeastern Australia

    Science.gov (United States)

    Simmons, Craig; Narayan, Kumar; Woods, Juliette; Herczeg, Andrew

    2002-03-01

    Saline groundwater and drainage effluent from irrigation are commonly stored in some 200 natural and artificial saline-water disposal basins throughout the Murray-Darling Basin of Australia. Their impact on underlying aquifers and the River Murray, one of Australia's major water supplies, is of serious concern. In one such scheme, saline groundwater is pumped into Lake Mourquong, a natural groundwater discharge complex. The disposal basin is hydrodynamically restricted by low-permeability lacustrine clays, but there are vulnerable areas in the southeast where the clay is apparently missing. The extent of vertical and lateral leakage of basin brines and the processes controlling their migration are examined using (1) analyses of chloride and stable isotopes of water (2H/1H and 18O/16O) to infer mixing between regional groundwater and lake water, and (2) the variable-density groundwater flow and solute-transport code SUTRA. Hydrochemical results indicate that evaporated disposal water has moved at least 100 m in an easterly direction and that there is negligible movement of brines in a southerly direction towards the River Murray. The model is used to consider various management scenarios. Salt-load movement to the River Murray was highest in a "worst-case" scenario with irrigation employed between the basin and the River Murray. Present-day operating conditions lead to little, if any, direct movement of brine from the basin into the river. Résumé. Les eaux souterraines salées et les effluents de drainage de l'irrigation sont stockés dans environ 200 bassins naturels ou artificiels destinés à retenir les eaux salines dans tout le bassin de Murray-Darling, en Australie. Leur impact sur les aquifères sous-jacents et sur la rivière Murray, l'une des principales ressources en eau d'Australie, constitue un problème grave. Dans une telle situation, les eaux souterraines salines sont pompées dans le lac Mourquong, complexe dans lequel les nappes se d

  1. Paleomagnetic Study of the Devonian Reef Complexes of the Canning Basin, Western Australia

    Science.gov (United States)

    Yan, M.; Tohver, E.; Cawood, P. A.; Kirschvink, J.; Peek, S.; Playton, T.; Hocking, R.; Haines, P.; Montgomery, P.

    2008-12-01

    The reef systems in the Canning Basin, Western Australia perhaps are the best exposed and least deformed examples of ancient reef systems known in the world. The recently commenced multi-disciplinary research project in the Devonian reef complex of the Canning Basin is a broad investigation of the depositional history of a carbonate platform using paleomagnetic, stable isotope geochemistry (inorganic and organic), sedimentology, and biostratigraphy. By focusing on the world-class exposures in the Canning Basin, this project seeks to provide a global stratigraphic reference frame for key intervals in life history such as the Frasnian-Fammenian mass extinction event, as well as providing a useful analogue for resource models of other carbonate reef systems elsewhere in the world. This reference frame will consist of a high resolution magnetostratigraphic profile to supplement the presently-sparse Global Polarity Timescale (GPTS) for the Devonian, as well as a chemostratigraphic profile (chiefly carbon isotopes) to identify possible shifts in the global carbon budget associated with biotic crises and/or climate change. Additional goals include identification of the conditions leading up to, and possible causes of the mass extinction event, and testing for a possible mid-Paleozoic episode of True Polar Wander. We report here on a paleomagnetic study of two magnetostratigraphic sections in the Canning Basin to address the goals mentioned above. Paleomagnetic samples have been drilled on the Late Frasnian limestones in the north of the Windjana Gorge National Park, with a total number of 400 core samples. So far preliminary paleomagnetic analysis on pilot samples reveals two characteristic remanent components. One component has a blocking temperatures less than 400 degree Celsius, probably a component of secondary overprint; another component has a blocking temperature around 580 and around 680 degree Celsius, indicating the presence of magnetite and hematite

  2. Bowen disease – clinic, dermoscopy, patology

    OpenAIRE

    Poklękowska Katarzyna; Brzeziński Piotr

    2011-01-01

    Bowen Disease is squamous cell carcinoma in situ in which the basement membrane is intact on histopathology. Lesions are usually solitary but may be multiple in 10-20 percent of cases. It typically presents as an erythematous enlarging plaque having irregular borders with scaling and crusting. The lesions may be fissured or verrucous or, rarely, pigmented. Ulceration may occur and is often a sign that invasive disease is developing. The risk of progression of Bowen disease to invasive carcin...

  3. Geochemistry and travertine dating provide new insights into the hydrogeology of the Great Artesian Basin, South Australia

    Energy Technology Data Exchange (ETDEWEB)

    Love, A.J.; Rousseau-Gueutin, P.; Priestley, S.; Keppel, M. [School of Environment, Flinders University, and NCGRT Adelaide, Australia bCSIRO Land and Water, PMB2, Glen Osmond, SA 5064 (Australia); Shand, P. [School of Environment, Flinders University, and NCGRT Adelaide, Australia bCSIRO Land and Water, PMB2, Glen Osmond, SA 5064 (Australia); Adelaide Acid Sulfate Soils Centre, Adelaide University, Adelaide, South Australia (Australia); University of New Mexico, Albuquerque, New Mexico (United States); Karlstrom, K.; Crossey, L. [University of New Mexico, Albuquerque, New Mexico (United States); Wholing, D. [DEWNR, South Australia Government (Australia); Fulton, S. [NRETAS, Northern Territory Government (Australia)

    2013-07-01

    While of great national and societal significance, and importance in its own right, the Great Artesian Basin of Australia is an iconic example of a continental scale artesian groundwater system. New geochemical, hydrological, and neo-tectonic data suggests that existing models that involve recharge in eastern Australia, relatively simple flow paths and discharge in springs in the western margin require modification. New geochemical data indicate a small volume flux of deeply derived (endogenic) fluids mixing into the aquifer system at a continental scale. Neotectonic data indicates active tectonism today that provides a fluid pathway through faults for the deeply sourced endogenic fluids to discharge in GAB travertine depositing springs. (authors)

  4. Generation and expulsion of oils from Permian coals of the Sydney Basin, Australia

    Energy Technology Data Exchange (ETDEWEB)

    Ahmed, M.; Volk, H.; George, S.C.; Faiz, M.; Stalker, L. [CSIRO Petrology, Sydney, NSW (Australia)

    2009-07-15

    Organic geochemical and petrological assessment of coals/coaly shales and fine grained sediments, coupled with organic geochemical analyses of oil samples, all from Permo-Triassic sections of the Southern Sydney Basin (Australia), have enabled identification of the source for the widely distributed oil shows and oil seeps in this region. The Permian coals have higher hydrogen indices, higher liptinite contents, and much higher total organic matter extract yields than the fine grained sediments. A variety of source specific parameters obtained from n-alkanes, regular isoprenoids, terpanes, steranes and diasteranes indicate that the oil shows and seeps were generated and expelled predominantly from higher plant derived organic matter deposited in oxic environments. The source and maturity related biomarkers and aromatic hydrocarbon distributions of the oils are similar to those of the coals. The oil-coal relationship also is demonstrated by similarities in the carbon isotopic composition of the total oils, coal extracts, and their individual n-alkanes. Extracts from the Permo-Triassic fine grained sediments, on the other hand, have organic geochemical signatures indicative of mixed terrestrial and prokaryotic organic matter deposited in suboxic environments, which are significantly different from both the oils and coal extracts. The molecular signatures indicating the presence of prokaryotic organic matter in some of the coal extracts and oils may be due to thin sections of possibly calcareous lithologies interbedded within the coal measures. The genetic relationship between the oils and coals provides new evidence for the generation and expulsion of oils from the Permian coals and raises the possibility for commercial oil accumulations in the Permian and Early Triassic sandstones, potentially in the deeper offshore part of the Sydney Basin.

  5. Famennian mud-mounds in the proximal fore-reef slope, Canning Basin, Western Australia

    Science.gov (United States)

    Webb, Gregory E.

    2001-12-01

    Famennian (Late Devonian) carbonate buildups and, in particular, mud-mounds, are poorly known, in general, and few have been documented in detail. Relatively small Famennian mud-mounds occur in proximal fore-reef slope settings in the Canning Basin, Western Australia. The Famennian platform margin facies passes from typical shoaling carbonate facies in the back reef, through massive, calcimicrobial, cement-rich reef-margin facies, to relatively steeply dipping (20-30°), well-bedded fore-reef slope facies containing shelf-derived, winnowed grainy sediments and extremely coarse reef-block debris. Isolated or coalescing mounds occur in the proximal slope, immediately adjacent to and, in some cases, possibly grading into the margin facies. Mounds are elongate perpendicular to the margin and some had synoptic relief greater than 2 m. Mounds are lithologically variable and consist of varying proportions of micrite, multiple generations of marine cement, abundant Rothpletzella, Renalcis, poorly preserved sparry microbial crusts and sporadically distributed laminar stromatoporoids. Surrounding grainy slope facies abut and slope off of mound flanks. Mound facies are very similar to nearby reef-margin facies, with the exceptions that stromatoporoids have not been observed in margin facies and solenoporoid algae, which occur in the margin, have not been observed in the mounds. Stromatolites are conspicuously absent from both facies. Mound facies appear to be more closely related to Frasnian and Famennian calcimicrobe cement-dominated reef-margin facies than to Famennian deep-water stromatolite-sponge-mound facies, such as those that occur elsewhere in the Canning Basin. The observed Canning Famennian reef and mound frameworks were constructed by communities that appear to be very similar to earlier Frasnian communities, despite the Frasnian-Famennian extinction event, and provide good examples of microbial reef framework construction in a high energy setting.

  6. Anthropogenic acceleration of sediment accretion in lowland floodplain wetlands, Murray-Darling Basin, Australia

    Science.gov (United States)

    Gell, Peter; Fluin, Jennie; Tibby, John; Hancock, Gary; Harrison, Jennifer; Zawadzki, Atun; Haynes, Deborah; Khanum, Syeda; Little, Fiona; Walsh, Brendan

    2009-07-01

    Over the last decade there has been a deliberate focus on the application of paleolimnological research to address issues of sediment flux and water quality change in the wetlands of the Murray-Darling Basin of Australia. This paper reports on the research outcomes on cores collected from sixteen wetlands along the Murrumbidgee-Murray River continuum. In all sixteen wetlands radiometric techniques and exotic pollen biomarkers were used to establish sedimentation rates from the collected cores. Fossil diatom assemblages were used to identify water source and quality changes to the wetlands. The sedimentation rates of all wetlands accelerated after European settlement, as little as two-fold, and as much as eighty times the mean rate through the Late Holocene. Some wetlands completely infilled through the Holocene, while others have rapidly progressed towards a terrestrial state due to accelerated accretion rates. Increasing wetland salinity and turbidity commenced within decades of settlement, contributing to sediment inputs. The sedimentation rate was observed to slow after river regulation in one wetland, but has accelerated recently in others. The complex history of flooding and drying, and wetland salinisation and eutrophication, influence the reliability of models used to establish recent, fine-resolution chronologies with confidence and the capacity to attribute causes to documented effects.

  7. Firewood harvest from forests of the Murray-Darling Basin, Australia. Part 2: Plantation resource required to supply present demand

    Energy Technology Data Exchange (ETDEWEB)

    West, P.W. [School of Environmental Science and Management, Southern Cross University, Lismore, NSW 2480 (Australia); SciWest Consulting, 16 Windsor Court, Goonellabah, NSW 2480 (Australia); Cawsey, E.M.; Stol, J. [CSIRO Sustainable Ecosystems, GPO Box 284, Canberra, ACT 2601 (Australia); Freudenberger, D. [Greening Australia, PO Box 74, Yarralumla, ACT 2600 (Australia)

    2008-12-15

    The Murray-Darling Basin covers 1 M km{sup 2} and occupies most of inland, south-eastern, mainland Australia. Large areas have been cleared and are now used for agriculture. In this paper, estimates are made of the minimum area of Eucalyptus globulus plantation forests needed to be established in the Basin to supply 2.25 M oven-dry t yr{sup -1} of firewood annually, the amount of firewood harvested presently from the native forests which remain in the Basin. If plantations were established in higher rainfall areas along the eastern and southern boundaries of the Basin, it was estimated that a minimum of just over 200,000 ha of plantations would be required, grown on a 10-yr rotation. If plantations were restricted to less productive areas of lower rainfall (<900 mm yr{sup -1}), or to areas where land clearing for agriculture has been particularly intensive, a minimum of just under 350,000 ha would be required, grown on an 11-yr rotation. If planting was restricted to soils in the Basin at high risk of salinisation from agriculture, which are generally in areas of lower rainfall, a minimum of about 600,000 ha would be required, grown on a 20-yr rotation. It is considered that the practicalities of plantation establishment in the Basin would require appreciably larger areas of plantations than these minima. (author)

  8. Lava and Life: New investigations into the Carson Volcanics, lower Kimberley Basin, north Western Australia

    Science.gov (United States)

    Orth, Karin; Phillips, Chris; Hollis, Julie

    2014-05-01

    The Carson Volcanics are the only volcanic unit in the Paleoproterozoic Kimberley Basin and are part of a poorly studied Large Igneous Province (LIP) that was active at 1790 Ma. New work focussing on this LIP in 2012 and 2013 involved helicopter-supported traverses and sampling of the Carson Volcanics in remote areas near Kalumburu in far north Western Australia's Kimberley region. The succession is widespread and flat lying to gently dipping. It consists of three to six basalt units with intercalated sandstone and siltstone. The basalts are 20-40 m thick, but can be traced up to 60 km along strike. The basalt can be massive or amygdaloidal and commonly display polygonal to subhorizontal and rare vertical columnar jointing. Features of the basalt include ropy lava tops and basal pipe vesicles consistent with pahoehoe lavas. The intercalated cross-bedded quartzofeldspathic sandstone and siltstone vary in thickness up to 40 m and can be traced up to 40 km along strike. Peperite is common and indicates interaction between wet, unconsolidated sediment and hot lava. Stromatolitic chert at the top of the formation represents the oldest life found within the Kimberley region. Mud cracks evident in the sedimentary rocks, and stromatolites suggest an emergent broad tidal flat environment. The volcanics were extruded onto a wide marginal margin setting subject to frequent flooding events. Thickening of the volcanic succession south and the palaeocurrents in the underlying King Leopold Sandstone and the overlying Warton Sandstone suggest that this shelf sloped to the south. The type of basalt and the basalt morphology indicate a low slope gradient of about 1°.

  9. Bowen disease – clinic, dermoscopy, patology

    Directory of Open Access Journals (Sweden)

    Poklękowska Katarzyna

    2011-07-01

    Full Text Available Bowen Disease is squamous cell carcinoma in situ in which the basement membrane is intact on histopathology. Lesions are usually solitary but may be multiple in 10-20 percent of cases. It typically presents as an erythematous enlarging plaque having irregular borders with scaling and crusting. The lesions may be fissured or verrucous or, rarely, pigmented. Ulceration may occur and is often a sign that invasive disease is developing. The risk of progression of Bowen disease to invasive carcinoma is about 3%. Bowen disease is most commonly found in patients over 60 years old. Oher risk factors: include chronic sun exposure, immunosuppression, arsenic exposure and cutaneous human papillomavirus (HPV- 16, 18, 34 i 48 infection.The majority of cases of Bowen disease revealed a peculiar dermoscopic pattern characterized by glomerular vesselsProliferation of numerous atypical keratinocytes throughout the entire thickness of the epidermis with hyperkeratosis, mitotic figures, multinucleated cells and dyskeratotic cells, full thickness dysplasia of the squamous epithelum, disorderly maturation of the epidermis, parakeratosis and loss of granular layer.

  10. CO 2 degassing and trapping during hydrothermal cycles related to Gondwana rifting in eastern Australia

    Science.gov (United States)

    Uysal, I. Tonguç; Golding, Suzanne D.; Bolhar, Robert; Zhao, Jian-xin; Feng, Yue-xing; Baublys, Kim A.; Greig, Alan

    2011-10-01

    Intensive carbonate and clay mineral authigenesis took place throughout the Late Permian Bowen-Gunnedah-Sydney basin system in eastern Australia. We conducted isotopic and trace element analyses of carbonate and clay minerals from clastic sedimentary rocks of the Gunnedah Basin and the Denison Trough in the Bowen Basin. Rb-Sr isochron age data of the illitic clays are consistent with episodic hydrothermal fluid flow events that occurred in association with Gondwana rifting accompanied by alkaline magmatism at ˜85 Ma and ˜95 Ma. Stable isotope data of carbonate and clay minerals from the Gunnedah Basin are indicative of meteoric waters from a high-latitude environment as the main fluid source, whereas trace element, Sr and Nd isotope data highlight mixing of meteoric fluids with magmatic and/or crustal components, with a possible input from marine carbonates for some samples. Trace metals, oxygen and strontium isotopes of dawsonites from the Denison Trough are interpreted to have been mobilised by fluids that interacted with evolved clastic sedimentary and marine carbonate end members. According to the carbon isotope data, CO 2 for calcite and ankerite precipitation was sourced mainly from thermal degradation of organic matter and magmatism, whereas the CO 2 used for dawsonite formation is inferred to have been derived from magmatic and marine sources. In the low permeability environments (particularly in coal seams), the increasing accumulation and oversaturation of CO 2 particularly promote the precipitation of dawsonite.

  11. Mean Transit Times in Seven Upland Catchments, Otway Basin, Southeast Australia

    Science.gov (United States)

    Howcroft, William; Cartwright, Ian; Morgenstern, Uwe

    2016-04-01

    The timescales over which precipitation is transmitted into upland streams (the mean transit times, MTTs) are poorly understood, as are the physical processes and controls that govern the variation in mean transit times. In this study, we use tritium (3H), major ion geochemistry and discharge data to investigate the MTTs in upland streams of the Otway Basin of southeast Australia. Samples were collected under varying discharge conditions from seven catchments of varying size whose land use varies from relatively pristine eucalyptus forest to a mixture of pasture, grazing, and production forestry. This allows the controls on MTTs to be assessed. Tritium activities within the streams varied from 0.20 to 2.35 TU, which are below that of local rainfall (~2.7 TU). The highest tritium activities were generally reported in samples collected during periods of high winter discharge, while the lowest tritium activities were reported in samples collected during low, summer discharge. However, at several of the streams, there appears to be a discharge threshold above which tritium activities do not increase appreciably with increased discharge. In general, streams with larger catchment areas and relatively simple geology have less variable but higher tritium activities. In contrast, the lowest and most variable tritium activities were reported in streams having small catchment areas and a greater complexity in geology. MTTs calculated using an exponential-piston flow model ranged between 8 and 180 years; MTTs calculated using other flow models were generally similar, except where the tritium activities were less than around 1 TU. Major ion concentrations generally increased with a corresponding increase in MTT. However, in those streams having more variable MTTs, the opposite often held true, which most likely reflects the variable contribution to flow by water from different geologic units under differing flow conditions. By contrast, land use does not appear to impart a

  12. Response of Riparian Vegetation in AUSTRALIA"S Largest River Basin to Inter and Intra-Annual Climate Variability and Flooding as Quantified with Landsat and Modis

    Science.gov (United States)

    Broich, M.; Tulbure, M. G.

    2016-06-01

    Australia is a continent subject to high rainfall variability, which has major influences on runoff and vegetation dynamics. However, the resulting spatial-temporal pattern of flooding and its influence on riparian vegetation has not been quantified in a spatially explicit way. Here we focused on the floodplains of the entire Murray-Darling Basin (MDB), an area that covers over 1M km2, as a case study. The MDB is the country's primary agricultural area with scarce water resources subject to competing demands and impacted by climate change and more recently by the Millennium Drought (1999-2009). Riparian vegetation in the MDB floodplain suffered extensive decline providing a dramatic degradation of riparian vegetation. We quantified the spatial-temporal impact of rainfall, temperature and flooding patters on vegetation dynamics at the subcontinental to local scales and across inter to intra-annual time scales based on three decades of Landsat (25k images), Bureau of Meteorology data and one decade of MODIS data. Vegetation response varied in space and time and with vegetation types, densities and location relative to areas frequently flooded. Vegetation degradation trends were observed over riparian forests and woodlands in areas where flooding regimes have changed to less frequent and smaller inundation extents. Conversely, herbaceous vegetation phenology followed primarily a `boom' and `bust' cycle, related to inter-annual rainfall variability. Spatial patters of vegetation degradation changed along the N-S rainfall gradient but flooding regimes and vegetation degradation patterns also varied at finer scale, highlighting the importance of a spatially explicit, internally consistent analysis and setting the stage for investigating further cross-scale relationships. Results are of interest for land and water management decisions. The approach developed here can be applied to other areas globally such as the Nile river basin and Okavango River delta in Africa or the

  13. Determining vertical leakage from the Great Artesian Basin, Australia, through up-scaling field estimates of phreatic evapotranspiration

    Science.gov (United States)

    Costelloe, J. F.; Matic, V.; Western, A. W.; Walker, J. P.; Tyler, M.

    2015-10-01

    Understanding the water balance of large groundwater systems is fundamental for the sustainable management of the resource. The vertical leakage (i.e. discharge to upper aquifers or the unconfined water table) component of the Great Artesian Basin (GAB) is an example of a poorly constrained but large component of the water balance of Australia's largest groundwater resource. Field estimates of phreatic evapotranspiration (ET) were made at discharge zones along the southwestern margin of the GAB using eddy covariance station and micro-lysimeter measurements, and inversion of chloride/isotope soil profile measurements. The field estimates were assigned to three major landforms associated with areas of increasingly higher evaporative discharge and progressively decreasing depths to the water table. These landforms were mapped using remote sensing and digital elevation data, with characteristically higher soil moisture, salt precipitation, and lower surface temperature compared to areas distal to discharge zones. Based on the field measurements, broad ranges of phreatic ET (0.5-10, 10-100 and 100-300 mm y-1) were assigned to the major land-types. The higher phreatic ET discharge zones mapped by supervised classification of satellite data are 8-28% of the total regional vertical leakage component estimated by numerical modelling of the GAB. In comparison, the higher discharge zones estimated by landform mapping are 73-251% of the total vertical leakage component estimated by modelling. The mapped distribution of the high discharge areas has important implications for modelling of the GAB. In the western sub-basin, most of the estimated recharge can be accounted for by phreatic ET in the high discharge zones located around the Basin margins, implying that vertical leakage rates distal to the margins are very low and that discharge may exceed current recharge. In contrast, the results for the eastern sub-basin suggest that vertical leakage rates around the South

  14. Re-evaluation of the Mentelle Basin, a polyphase rifted margin basin, offshore south-west Australia: new insights from integrated regional seismic datasets

    Directory of Open Access Journals (Sweden)

    D. Maloney

    2011-02-01

    Full Text Available Vintage 2-D (two dimensional seismic reflection surveys from the sparsely explored Mentelle Basin (western Australian margin have been re-processed and integrated with recent high quality seismic survey, and stratigraphic borehole data. Interpretation of these data sets allows the internal geometry of the Mentelle Basin fill and depositional history to be reanalysed with a greater degree of confidence. Basin stratigraphy can be subdivided into several seismically defined megasequences, separated by major unconformities related to both the Valanginian breakup between India-Madagascar and Australia-Antarctica, and tectonically-driven switches in deposition through the Albian.

    Resting on the Valanginian unconformity are several kilometre-scale mounded structures that formed during late Jurassic to early Cretaceous extension. These have previously been interpreted as volcanic edifices, although direct evidence of volcanic feeder systems is lacking. An alternative interpretation is that these features may be carbonate build-ups. The latter interpretation carries significant climatic ramifications, since carbonate build-ups would have formed at high palaeolatitude, ~60° S.

    Soon after breakup, initial subsidence resulted in a shallow marine environment and Barremian-Aptian silty-sandy mudstones were deposited. As subsidence continued, thick Albian ferruginous black clays were deposited. Internally, black clay megasequences show previously unresolved unconformities, onlapping and downlapping packages, which reflect a complex depositional, rifting and subsidence history, at odds with their previous interpretation as open marine sediments.

    Southwestwards migration of the Kerguelen hotspot led to thermal contraction and subsidence to the present day water depth (~3000 m. This was accompanied by Turonian-Santonian deposition of massive chalk beds, which are unconformably overlain by pelagic Palaeocene-Holocene sediments. This

  15. Merkel Cell Carcinoma Concurrent with Bowen's Disease

    OpenAIRE

    Park, Hyun Chul; Kang, Ho Song; Park, Kyoung Tae; Oh, Young Ha; Yu, Hee Joon; Kim, Joung Soo

    2012-01-01

    Merkel cell carcinoma (MCC) is a rare, aggressive cutaneous malignancy of the elderly and immunocompromised patients. It is occasionally found coexisting with other diseases, such as squamous cell carcinoma, basal cell carcinoma, actinic keratosis, miscellaneous adnexal tumors, and rarely Bowen disease. A 75-year-old woman presented with a 6-month history of an irregularly shaped erythematous patch on the left mandibular angle. Three months later, a 1.5×1.0 cm sized painless and rapidly growi...

  16. Multiple Bowen's disease in chronic arsenicosis

    Directory of Open Access Journals (Sweden)

    Joydeep Singha

    2014-04-01

    Full Text Available Bowen’s disease is a carcinoma in-situ of skin. It was fi rst described by John T. Bowen. It usually present as a solitary lesion in elderly person over sun-exposed area. A case of multiple Bowen’s disease involving non-sun exposed areas of a person with clinical sign of chronic arsenicosis has been found.Read more....

  17. Multiple Bowen's disease in chronic arsenicosis

    OpenAIRE

    Joydeep Singha

    2014-01-01

    Bowen’s disease is a carcinoma in-situ of skin. It was fi rst described by John T. Bowen. It usually present as a solitary lesion in elderly person over sun-exposed area. A case of multiple Bowen’s disease involving non-sun exposed areas of a person with clinical sign of chronic arsenicosis has been found.Read more....

  18. Dermoscopy Clues in Pigmented Bowen's Disease

    OpenAIRE

    Daniela Gutiérrez-Mendoza; Roberto Narro-Llorente; Marcia Karam-Orantes; Verónica Fonte-Avalos; Eduwiges Martínez-Luna; Sonia Toussaint-Caire; Judith Domíguez-Cherit

    2010-01-01

    Pigmented tumors have similar clinical features that overlap and hamper diagnosis. Dermoscopy increases the diagnostic accuracy of doubtful melanocytic lesions and has been used as a noninvasive tool in the detection of pigmented lesions (PLs) like melanoma, basal cell carcinoma, and pigmented Bowen's disease (pBD). Our objective was to show the dermoscopic features of 2 cases of pBD and compare with the findings reported in the literature. Two dermoscopic images of biopsy proven pBD were ret...

  19. Using environmental isotopes and dissolved methane concentrations to constrain hydrochemical processes and inter-aquifer mixing in the Galilee and Eromanga Basins, Great Artesian Basin, Australia

    Science.gov (United States)

    Moya, Claudio E.; Raiber, Matthias; Taulis, Mauricio; Cox, Malcolm E.

    2016-08-01

    Groundwater recharge processes, water-rock interaction and the hydraulic connectivity between aquifers of the Galilee and Eromanga Basins in central Queensland, Australia, were investigated using stable (δ2H, δ18O, δ13C and 87Sr/86Sr) and radiogenic (36Cl) isotopes and dissolved methane concentrations, complemented by major ion chemistry. The central Eromanga and the upper sequence of the Galilee basins are both sub-basins of the Great Artesian Basin (GAB), and the coal seams of the Galilee Basin are currently explored for their potential as commercial coal seam gas deposits. In order to understand the potential influence of depressurisation of coal seams required to release the gas on adjacent aquifers, a detailed understanding of recharge processes and groundwater hydraulics of these basins prior to any development is required. Each of the different isotope systems were used in this study to provide different information on specific processes. For example, the assessment of δ13C and 87Sr/86Sr ratios suggested that carbonate dissolution is one of the major processes controlling the water chemistry within some aquifers. In addition, the combined assessment of δ2H, δ18O and major ion chemistry indicates that transpiration is the primary process controlling the solute concentration in the GAB recharge area, whereas evaporation appears to be less significant. Groundwaters in the Galilee Basin recharge area (outside the limits of the GAB) are different to any groundwater within the GAB units. This difference is attributed to the dissolution of potassium-bearing micas, which are absent in the GAB. Groundwater age estimates based on 36Cl/Cl ratios suggest that there is a steady increase along the flow paths, and this lack of anomalous age estimates from the recharge areas to the deeper parts of the basin indicates that there is no evidence for regional inter-aquifer mixing based in isotopes only. However, dissolved methane concentrations and groundwater chemistry

  20. Geophysical anomalies and quartz microstructures, Eastern Warburton Basin, North-east South Australia: Tectonic or impact shock metamorphic origin?

    Science.gov (United States)

    Glikson, Andrew Y.; Uysal, I. Tonguç; Fitz Gerald, John D.; Saygin, Erdinc

    2013-03-01

    The Eastern Warburton Basin, Northeast South Australia, features major geophysical anomalies, including a magnetic high of near-200 nT centred on a 25 km-wide magnetic low ( 30,000 km-large Eastern Warburton Basin. The Qz/PE include multiple intersecting planar to curved sub-planar elements with relic lamellae less than 2 μm wide with spacing of 4-5 μm. Qz/PE are commonly re-deformed, displaying bent and wavy patterns accompanied with fluid inclusions. U-stage measurements of a total of 243 planar sets in 157 quartz grains indicate dominance of ∏{10-12}, ω{10-13} and subsidiary §{11-22}, {22-41}, m{10-11} and x{51-61} planes. Transmission Electron Microscopy (TEM) analysis displays relic narrow ≤ 1 μm-wide lamellae and relic non-sub grain boundaries where crystal segments maintain optical continuity. Extensive sericite alteration of feldspar suggests hydrothermal alteration to a depth of 500 m below the unconformity which overlies the Qz/PE-bearing Warburton Basin terrain. The data are discussed in terms of (A) Tectonic-metamorphic deformation and (B) impact shock metamorphism producing planar deformation features (Qz/PDF). Deformed Qz/PE are compared to re-deformed Qz/PDFs in the Sudbury, Vredefort, Manicouagan and Charlevoix impact structures. A 4-5 km uplift of the Big Lake Granite Suite during 298-295 Ma is consistent with missing of upper Ordovician to Devonian strata and possible impact rebound. The occurrence of circular seismic tomography anomalies below the east Warburton Basin, the Poolowana Basin and the Woodleigh impact structure signifies a potential diagnostic nature of circular tomographic anomalies.

  1. Primary Extramammary Paget's Disease Combined with Bowen's Disease in Vulva

    OpenAIRE

    Kim, Sung-Ae; Kwon, Jun-Il; Jung, Hye Ra; Lee, Kyu-Suk; Cho, Jae-We

    2011-01-01

    Extramammary Paget's disease (EMPD) is a uncommon neoplastic condition of apocrine gland-bearing skin and its occurrence in combination with Bowen's disease is very rare. The most common site of involvement is the vulva, although perineal, perianal, scrotal and penile skin may also be affected. EMPD is usually not combined with Bowen's disease. We report an interesting case of EMPD combined with Bowen's disease, which was confirmed by immunohistochemical stain.

  2. Impact of stormwater infiltration basins on groundwater quality, Perth metropolitan region, Western Australia

    Science.gov (United States)

    Appleyard, S. J.

    1993-08-01

    Twelve bores were sunk adjacent to three stormwater infiltration basins in the Perth metropolitan area to examine the impact of runoff from a light industrial area, a medium-density residential area, and a major arterial road on groundwater quality, and to examine the hydrological response of the aquifer to runoff recharge. Automatic and manual water level monitoring between April and November 1990 indicated that groundwater levels responded within minutes to recharge from the infiltration basins. Peak water levels of up to 2.5 m above rest levels occurred 6 24 h after the commencement of ponding in the infiltration basins. There was a marked reduction in salinity and increase in dissolved oxygen concentrations in the upper part of the aquifer downgradient of the infiltration basins. Concentrations of toxic metals, nutrients, pesticides, and phenolic compounds in groundwater near the infiltration basins were low and generally well within Australian drinking water guidelines. However, sediment in the base of an infiltration basin draining a major road contained in excess of 3500 ppm of lead. Phthalates, which are US EPA priority pollutants, were detected in all but one bore near the infiltration basins. Their detection may be a sampling artifact, but they may also be derived from the plastic litter that accumulates in the infiltration basins. The concentration of iron in groundwater near the infiltration basins appears to be controlled by dissolved oxygen concentrations, with high iron concentrations occurring where dissolved oxygen concentrations are low. Pumping bores located near infiltration basins may suffer from iron encrustation problems caused by the mixing of shallow, oxygenated groundwater with water containing higher concentrations of iron from deeper in the aquifer.

  3. Using hydrogeochemistry to understand inter-aquifer mixing in the on-shore part of the Gippsland Basin, southeast Australia

    International Nuclear Information System (INIS)

    Highlights: ► First 14C data for the inter-mountainous Gippsland Basin. ► Hydrogeochemistry shows inter-aquifer mixing, which is not possible with head data. ► Groundwater flow occurs across aquifer boundaries horizontally and vertically. ► Isotope data indicate chemical processes such as methanogenesis in some aquifers. ► Although 14C age correction is difficult, we correct for geochemical processes. - Abstract: Groundwater in the Latrobe Valley in the Gippsland Basin of southeast Australia is important for domestic, agricultural and industrial uses. This sedimentary basin contains a number of aquifers that are used for water supply, dewatered for open pit coal mining, and which are potentially influenced by off-shore oil and gas production. Major ion chemistry together with stable and Sr isotope data imply that the main hydrogeochemical processes are evapotranspiration with minor silicate and carbonate weathering; methanogenesis and SO4 reduction in reduced groundwater associated with coal deposits have also occurred. Groundwater has estimated 14C ages of up to 36 ka and is largely 3H free. Carbon-14 ages are irregularly distributed and poorly correlated with depth and distance from the basin margins. The observations that the geochemistry of groundwater in aquifers with different mineralogies are similar and the distribution of 14C ages is irregular implies that the aquifers are hydraulically connected and horizontal as well as vertical inter-aquifer mixing occurs. The connection of shallow and deeper aquifers poses a risk for the groundwater resources in Gippsland as contaminants can migrate across aquifers and dewatering of shallow units may impact deeper parts of the groundwater system

  4. Inelastic yielding and forebulge shape across a modern foreland basin: North West Shelf of Australia, Timor Sea

    Science.gov (United States)

    Lorenzo, Juan M.; O'Brien, Geoffrey W.; Stewart, Jonathan; Tandon, Kush

    The Timor Trough is a modern ‘underfilled’ foreland basin created by partial subduction of the outer north west continental shelf of Australia beneath Timor Island in the Outer Banda Arc of eastern Indonesia during the Cenozoic. A change of the effective elastic thickness (EET) of the continental foreland lithosphere from ˜80±20 km to ˜25 km over a distance of ˜300 km explains (1) the high curvature (˜10-7 m-1) on the outer Trough wall, (2) the low shelf forebulge (˜200 m) as measured along a reference base Pliocene unconformity, and (3) observed gravity. An inelastically yielding quartzite-quartz-diorite-dunite continental rheology can explain the EET gradient. New, shallow crustal (<8 km), seismic reflection images indicate that Jurassic basement normal faults are reactivated during bending of the foreland.

  5. 海拉尔盆地与澳大利亚Bowen-Gunnedah-Sydney盆地系片钠铝石碳来源的比较研究%Comparative study of carbon origin of dawsonite between Hailar Basin of China and Bowen-Gunnedah-Sydney basin system of Australia

    Institute of Scientific and Technical Information of China (English)

    高玉巧; 刘立; 蒙启安; 许岩; 曲希玉; 金仙梅

    2005-01-01

    作为胶结物、交代物或孔洞充填物,片钠铝石[NaAlCO3(OH)2]大量发育于海拉尔盆地和澳大利亚BGS盆地系.根据片钠铝石稳定同位素组成,对比分析片钠铝石的碳来源.BGS盆地系片钠铝石的δ13C分布连续,分布区间为-4.0×10-3~4.1×10-3,计算出的与片钠铝石平衡的CO2气的δ13CO2值分布区间为-11.3×10-3~-4.6×10-3,结合片钠铝石的分布和区域地质背景,认为片钠铝石中的碳来源于岩浆活动而带来的无机CO2气;海拉尔盆地片钠铝石δ13C值分布连续,为-4.64×10-3~2.12×10-3,计算出的与片钠铝石平衡的CO2气的δ13CO2值分布区间为-11.82×10-3~-5.11×10-3,结合海拉尔盆地探井中未钻遇碳酸盐地层、含片钠铝石井和幔源CO2气井分布相吻合且位于燕山期花岗岩区或其附近的深大断裂带上,认为形成片钠铝石所需的CO2气为与燕山期岩浆作用有关的幔源CO2气,片钠铝石形成时因油气充注而介入少量生物成因碳.

  6. Energy Balance Bowen Ratio (EBBR) Handbook

    Energy Technology Data Exchange (ETDEWEB)

    Cook, D. R. [Argonne National Lab. (ANL), Argonne, IL (United States)

    2016-01-01

    The Energy Balance Bowen Ratio (EBBR) system produces 30-minute estimates of the vertical fluxes of sensible and latent heat at the local surface. Flux estimates are calculated from observations of net radiation, soil surface heat flux, and the vertical gradients of temperature and relative humidity (RH). Meteorological data collected by the EBBR are used to calculate bulk aerodynamic fluxes, which are used in the Bulk Aerodynamic Technique (BA) EBBR value-added product (VAP) to replace sunrise and sunset spikes in the flux data. A unique aspect of the system is the automatic exchange mechanism (AEM), which helps to reduce errors from instrument offset drift.

  7. Energy Balance Bowen Ratio Station (EBBR) Handbook

    Energy Technology Data Exchange (ETDEWEB)

    Cook, DR

    2011-02-23

    The energy balance Bowen ratio (EBBR) system produces 30-minute estimates of the vertical fluxes of sensible and latent heat at the local surface. Flux estimates are calculated from observations of net radiation, soil surface heat flux, and the vertical gradients of temperature and relative humidity (RH). Meteorological data collected by the EBBR are used to calculate bulk aerodynamic fluxes, which are used in the Bulk Aerodynamic Technique (BA) EBBR value-added product (VAP) to replace sunrise and sunset spikes in the flux data. A unique aspect of the system is the automatic exchange mechanism (AEM), which helps to reduce errors from instrument offset drift.

  8. Re-evaluation of the Mentelle Basin, a polyphase rifted margin basin, offshore southwest Australia: new insights from integrated regional seismic datasets

    Directory of Open Access Journals (Sweden)

    D. Maloney

    2011-07-01

    Full Text Available Vintage 2-D (two-dimensional seismic reflection surveys from the sparsely explored Mentelle Basin (western Australian margin have been reprocessed and integrated with a recent high-quality 2-D seismic survey and stratigraphic borehole data. Interpretation of these data sets allows the internal geometry of the Mentelle Basin fill and depositional history to be reanalysed and new insights into its formation revealed. Basin stratigraphy can be subdivided into several seismically defined megasequences separated by major unconformities related to both breakup between India-Madagascar and Australia-Antarctica in the Valanginian-Late Hauterivian and tectonically-driven switches in deposition through the Albian.

    Resting on the Valanginian-Late Hauterivian breakup unconformity are several kilometre-scale mounded structures that formed during Late Jurassic to Early Cretaceous extension. These have previously been interpreted as volcanic edifices although direct evidence of volcanic feeder systems is lacking. An alternative interpretation is that these features may be carbonate build-ups. The latter interpretation carries significant climatic ramifications since carbonate build-ups would have formed at high palaeolatitude, ~60° S.

    Soon after breakup, initial subsidence resulted in a shallow marine environment and deposition of Barremian-Aptian silty-sandy mudstones. As subsidence continued, thick successions of Albian ferruginous black clays were deposited. Internally, seismic megasequences composed of successions of black clays show previously unresolved unconformities, onlapping and downlapping packages, which reflect a complex depositional, rifting and subsidence history at odds with their previous interpretation as open marine sediments.

    Southwestwards migration of the Kerguelen hotspot led to thermal contraction and subsidence to the present day water depth (~3000 m. This was accompanied by Turonian-Santonian deposition of

  9. Modelling Surface Water Dynamics (SWD) on Large River Basin Scale from Space: A Case Study for the Murray-Darling Basin (MDB) of Australia

    Science.gov (United States)

    Heimhuber, V.; Tulbure, M. G.; Broich, M.

    2015-12-01

    Globally, increasing demands on water resources along with climate variability and change have led to alarming declines and deterioration of terrestrial surface water resources. The usage of earth-observation data and techniques for modeling SWD and its drivers represents a promising approach for sustainable management and restoration of surface water resources across broad geographic regions. The main objective of this research was to model SWD with a focus on floods, observed in 25 years of Landsat imagery (1986 - 2011), across a large and highly regulated river basin, the MDB in Australia. SWD were modelled as a function of river flow and spatially explicit time-series data on soil moisture (Climate Change Initiative active passive microwave), evapotranspiration (Australian Water Resources Assessment land surface model) and rainfall (gauge-based). To enable a consistent modeling approach within the complex hydrological structure of the river basin, a unique spatial modeling framework was developed based on a fully directed and connected stream network, a categorization of the basin into floodplain and non-floodplain area and a regular grid of 10 by 10 km cells. Based on this framework, SWD on local floodplain units were successfully related to flow data from connected gauges by quantifying the lag time for each cell. Dynamic regression models of SWD were fitted locally for floodplains in each grid cell, with an average adjusted r2 above 0.7. Validation against 10 years of test data that was left out for model fitting showed that the models can predict the test data with an average r2 of 0.7, which makes them suitable for improving the ongoing management and allocation of environmental flows in the MDB. The models also revealed the relative importance of local climate conditions for SWD, with increased importance of soil moisture, evapotranspiration and rainfall in arid regions, in proximity to headwater catchments and on slow-draining floodplains.

  10. Regional MT survey across an archaean craton in south Australia. Influence of sedimentary basins and plate boundaries

    International Nuclear Information System (INIS)

    Complete text of publication follows. Long-period MT data at more than 200 stations have been collected across the Late Archaean - Early Proterozoic Gawler Craton, South Australia, during numerous field campaigns between 2002 and 2009. The total site coverage spans an area of approximately 800x500 km providing a unique dataset to image one of the oldest cratons in the world. The Gawler Craton is known for its mineral exploration potential, i.e. the IOCG Olympic Dam deposit (Heinson et al, 2006). MT data can help constrain the position of lithospheric structures which could provide clues to the genesis of mineral deposits throughout the region. Moreover, large parts of the craton are covered with sediments ranging from tens to thousands of meters in thickness. The sedimentary basins have a significant influence on the MT responses and if not taken into account can lead to erroneous results in a smooth inversion scheme due to their high conductances. We present 3D inversion models using a subset of sites in the period range of 10-10000s in order to image the subsurface resistivity distribution of the Gawler Craton. Initial 2D and 3D inversions of a subset of MT sites indicates an electrically resistive Archaean core. The thick sedimentary basins surrounding most of the Gawler Craton are taken into account by using starting models with the basins included as a priori information. Together with the inclusion of bathymetry data of the Southern Sea the inverse procedure has more constraints and is able to produce better results than an unconstrained inversion. The results provide additional constrains to the understanding of the evolution of the Archaean-Proterozoic Gawler Craton by imaging the crust and upper mantle. Tectonic models are largely based on limited outcrop due to thick regolith cover and domain boundaries inferred from potential field data. These can now be validated with the use of large-scale MT modelling.

  11. Trilobites from the Middle Ordovician Stairway Sandstone, Amadeus Basin, central Australia

    DEFF Research Database (Denmark)

    Jakobsen, Kristian Grube; Nielsen, Arne Thorshøj; Harper, David Alexander Taylor;

    2014-01-01

    During the Middle Ordovician (Darriwilian) sandstones and siltstones were deposited in the epicontinental Larapintine Sea, which covered large parts of central Australia. The Darriwilian Stairway Sandstone has, for the first time, been sampled stratigraphically for macrofossils to track marine...... benthic biodiversity in this clastic-dominated shallow-water palaeoenvironment situated along the margin of northeastern Gondwana. The faunas from the Stairway Sandstone are generally of low diversity and dominated by bivalves but include several animal groups, with trilobites representing 25......% of the entire shelly fauna. Thirteen trilobite taxa are described from the Stairway Sandstone; the fauna displays a high degree of endemism. One new species, Basilicus (Parabasilicus) brumbyensis sp. nov. is described....

  12. Intrusive large igneous provinces below sedimentary basins: An example from the Exmouth Plateau (NW Australia)

    Science.gov (United States)

    Rohrman, Max

    2013-08-01

    igneous provinces (LIPs) are commonly characterized by extrusion of huge outpourings of flood basalts. However, some LIPs associated with thick sedimentary basins display mainly intrusive sill and dike complexes and a relative absence of extrusives as evidenced on the Exmouth Plateau. Here a breakup-related 150 km × 400 km sill complex imaged on seismic reflection data intruded mainly Triassic sedimentary rocks between the Late Jurassic and the Early Cretaceous. The sill complex is most likely sourced by a mafic or an ultramafic magma chamber, seismically imaged as a high-velocity body (HVB) and covering ~16 × 104 km2. This magma chamber is located at the base of the crust and did not generate extrusives. Simple hydrostatic calculations suggest that melt became vertically arrested in the basin sediments, primarily owing to a reduction in the magmatic overpressure gradient as a result of the differences between fracture and melt gradients controlled by upward decreasing densities of the basin fill. Furthermore, magma overpressures at the source between 5 and 20 MPa are required to explain the presence of sill complexes at 4-11 km depth, indicating that the HVB is the source of the sill/dike complex on the Exmouth Plateau. The extent and outline of the HVB places constraints on the origin of magmatism and LIP formation. In combination with published data, the results suggest a thermal anomaly (upwelling or plume) source for the observed magmatism.

  13. The effects of irrigation waste-water disposal in a former discharge zone of the Murray Basin, Australia

    Science.gov (United States)

    Chambers, L. A.; Williams, B. G.; Barnes, C. J.; Wasson, R. J.

    1992-08-01

    In the Murray Basin in southeastern Australia, saline waste irrigation waters are often discharged to natural depressions and saline lakes as a salinity and land management strategy. At the Noora disposal basin in South Australia the waste irrigation water ( EC = 17-19 dS m-1) has formed a lens in the top of the highly saline (50-80 dS m -1) regional groundwater (Parilla Sands) aquifer. Using salinity and environmental isotopes of water (deuterium and oxygen-18) the lens has been shown to extend about 500 m in a northwesterly direction from the disposal pond. The major effects of this lens have been: (1) to cause upwards displacement of the regional ground water over an area of about 285 km 2, implying increased evaporation from areas surrounding the lens; (2) to reduce evaporation of regional ground water from the central low-lying area. Electromagnetic induction techniques for detecting preferred flowpaths away from the basin were rendered ineffective in this environment because of lithologic variations within the dune system. However, examination of bore-logs and groundwater gradients indicated that there was little evidence of stratigraphic control of mound development. Salinity in the Parilla Sands aquifer was closely related to the depth of the water table from the soil surface. Shallow (2-4 m) water tables were affected by recharge and evaporation to a much greater extent than ground water located below the higher dunes. There was, however, an almost instantaneous pressure response throughout the whole groundwater system to changes induced in the low-lying areas. Analyses of piezometric data showed that there was a seasonal variation imposed on the groundwater mound development. Corrected mean annual water-table increments and estimates of the mound volume and area were derived from a Theis response curve of the water table rise associated with the mound alone. Calculations using fitted parameters from the Theis analyses also suggested high transmissivity

  14. A molecular and isotopic study of palaeoenvironmental conditions through the middle Cambrian in the Georgina Basin, central Australia

    Science.gov (United States)

    Pagès, Anais; Schmid, Susanne; Edwards, Dianne; Barnes, Stephen; He, Nannan; Grice, Kliti

    2016-08-01

    The Cambrian period marks an important point in Earth's history with profound changes in the ocean's biogeochemistry and the occurrence of the most significant evolutionary event in the history of life, the Cambrian explosion. The Cambrian explosion is described as a succession of complex cycles of extinctions and radiations. This study integrates biomarkers and their compound-specific stable carbon isotopes to investigate the palaeoenvironmental depositional conditions in middle Cambrian (Series 3) sedimentary rocks (Thorntonia Limestone, Inca Formation and Currant Bush Limestone) from two drillholes in the Undilla Sub-basin in the eastern Georgina Basin, central Australia. The occurrence of photic zone euxinia (PZE) was detected throughout these three formations by the identification of green sulfur bacteria Chlorobiaceae-derived biomarkers, including a series of 2,3,6-aryl isoprenoids and the intact biomarker isorenieratane. Pulses of enhanced PZE conditions were detected in two core intervals (90-110 mKB, Currant Bush Limestone and 170-200 mKB, Inca Formation) by an increase in the 2,3,6-aryl isoprenoids and C19 biphenyl concentrations. These enhanced PZE conditions were followed by blooms of phytoplankton, as demonstrated by the increase in algal-derived biomarker (i.e. pristane, phytane and the C19n-alkane) concentrations and compound-specific isotopes. These observations confirm that palaeoenvironmental conditions were similar to those reported for the Permian/Triassic and Triassic/Jurassic mass extinction events. The sterane distributions varied across the three formations reflecting possible changes in the phytoplanktonic communities through time. Although a rise in atmospheric oxygen during the Cambrian has been previously associated with the rapid evolution of metazoans, the ecological challenges related to widespread anoxia must have had a major influence on the evolution of life in Cambrian oceans.

  15. The geostatistical approach for structural and stratigraphic framework analysis of offshore NW Bonaparte Basin, Australia

    Energy Technology Data Exchange (ETDEWEB)

    Wahid, Ali, E-mail: ali.wahid@live.com; Salim, Ahmed Mohamed Ahmed, E-mail: mohamed.salim@petronas.com.my; Yusoff, Wan Ismail Wan, E-mail: wanismail-wanyusoff@petronas.com.my [Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Tronoh, Perak (Malaysia); Gaafar, Gamal Ragab, E-mail: gaafargr@gmail.com [Petroleum Engineering Division, PETRONAS Carigali Sdn Bhd, Kuala Lumpur (Malaysia)

    2016-02-01

    Geostatistics or statistical approach is based on the studies of temporal and spatial trend, which depend upon spatial relationships to model known information of variable(s) at unsampled locations. The statistical technique known as kriging was used for petrophycial and facies analysis, which help to assume spatial relationship to model the geological continuity between the known data and the unknown to produce a single best guess of the unknown. Kriging is also known as optimal interpolation technique, which facilitate to generate best linear unbiased estimation of each horizon. The idea is to construct a numerical model of the lithofacies and rock properties that honor available data and further integrate with interpreting seismic sections, techtonostratigraphy chart with sea level curve (short term) and regional tectonics of the study area to find the structural and stratigraphic growth history of the NW Bonaparte Basin. By using kriging technique the models were built which help to estimate different parameters like horizons, facies, and porosities in the study area. The variograms were used to determine for identification of spatial relationship between data which help to find the depositional history of the North West (NW) Bonaparte Basin.

  16. Trace Element Geochemistry of Matrix Glass from the Bedout Impact Structure,Canning Basin NW Australia

    Science.gov (United States)

    Poreda, R. J.; Basu, A. R.; Chakrabarti, R.; Becker, L.

    2004-12-01

    We report on geochemical and petrographic analysis of separated matrix glass from Lagrange-1 and Bedout-1 drill cores that penetrated the Bedout structure offshore NW Australia. The results support the conclusion that the Bedout structure was produced by a a major ET impact at the end-Permian that generated shock melted glass and impact breccias (Becker et al., Science, v.304, p.1469, 2004) The Bedout structure is a 30 km, circular, 1.5 km uplifted basment high that occurs on the passive margin offshore NW Australia. The isolated feature, covered by 3 km of Triassic to Recent sediments,is not consistent with any typical volcanic province (i.e. arc or hotspot volcanism). This hypothesis is supported by the unique mineralogy and chemistry of the matrix glass. At Lagrange, major elements crudely resemble low-K, Fe-Ti basalts while the trace element patterns have two distinct signatures. The lower 250 m of Lagrange (3260 - 3010 m depth) have essentially flat REE and "spider" patterns that superficially resemble some E-MORB; a signal not typically found in arc, hotspot or continental margin settings. The upper 150 meters (3000 - 2850m) of Lagrange and the entire Bedout core (3030 - 3070m) have similar light REE-enriched patterns but low levels of alkalis, alkaline-earths and high field strength elements. Again, the chemistry is not consistent with an arc or hotspot setting, based on the low Ba and extremely low Sr (30-110 ppm) concentrations. Based on the geophysical, chemical and petrologic evidence, we hypothesize that the Bedout structure formed as the result` of an ET impact with Permian age rift margin basalts and continental sediment. The basalts did not completely melt as evidenced by the abundance of large (1 mm) An50 plagioclase,that exist as both crystalline plag and shock melted maskelynite. Plagioclase is the major repository of Sr in basalts and the lack of a plagioclase contribution to the melt glass is reflected in the low Sr abundance. Shock

  17. Radiocarbon dating and the 36Cl/Cl evolution of three Great Artesian Basin wells at Dalhousie, South Australia

    Science.gov (United States)

    Abu Risha, Usama A.

    2016-06-01

    The use of 14C (half-life = 5,730 years) in modeling the evolution of the 36Cl/Cl ratios in groundwater is reported for the first time. The complexity of the Cl-36Cl system due to the occurrence of different Cl and 36Cl sources and the difficulty of the determination of the initial groundwater 36Cl/Cl ratios have raised concerns about the reliability of using 36Cl (half-life = 301 thousand years, a) as a groundwater-dating tool. This work uses groundwater 14C age as a calibrating parameter of the Cl-36Cl/Cl decay-mixing models of three wells from the southwestern Great Artesian Basin (GAB), Australia. It aims to allow for the different sources of Cl and 36Cl in the southwestern GAB aquifer. The results show that the initial Cl concentrations range from 245 to 320 mg/l and stable Cl is added to groundwater along flowpaths at rates ranging from 1.4 to 3.5 mg/l/ka. The 36Cl content of the groundwater is assumed to be completely of atmospheric origin. The samples have different Cl-36Cl/Cl mixing-decay models reflecting recharge under different conditions as well as the heterogeneity of the aquifer.

  18. Incompatible stress regimes from geological and geomechanical datasets: Can they be reconciled? An example from the Carnarvon Basin, Western Australia

    Science.gov (United States)

    Bailey, Adam H. E.; King, Rosalind C.; Holford, Simon P.; Hand, Martin

    2016-06-01

    Knowledge of the in-situ stress field is essential in petroleum basins, as it exerts a prime control over seal integrity, fracture stimulation, wellbore stability, and fluid flow. Previous geomechanical analysis of Australia's Carnarvon Basin, the continent's premier hydrocarbon region, highlights a normal to strike-slip fault stress regime. However, neotectonic evidence and contemporary seismicity suggest the possibility of a strike-slip to reverse-fault stress regime. We attempt to reconcile these conflicting datasets through new analysis of the in-situ stresses; Principal stress magnitudes and orientations were defined with data from 76 previously unanalysed petroleum wells. Wellbore image logs yield a maximum horizontal stress orientation of 113°N, consistent with modelling of the stress-field throughout the Indo-Australian Plate. Vertical stress magnitudes are estimated to range from 20 MPa km- 1 to 22.4 MPa km- 1. Leak-off tests (LOT) from 42 wells are analysed using two methodologies (one assuming tensile failure as traditionally accepted, the other assuming shear failure as outlined by Couzens-Schultz and Chan, 2010) and result in two different sets of horizontal stress magnitude estimates. Traditional interpretation of LOTs results in a minimum horizontal stress gradient of 16.8 MPa km- 1 and a maximum horizontal stress gradient of 21.8 MPa km- 1. The new method for LOT interpretation results in a minimum horizontal stress gradient of 18.1 MPa km- 1 and a maximum horizontal stress gradient of 25.4 MPa km- 1. Inclined natural fractures observed at LOT depths supports application of the new method of LOT interpretation. Traditional interpretation of stress magnitudes implies a normal to strike-slip fault stress regime, while the new method implies a strike-slip fault stress regime. This latter interpretation is favoured by the authors, as it allows for a reconciliation of the geological and geomechanical datasets. The assessment undertaken herein allows for

  19. Karst Aquifer Recharge: A Case History of over Simplification from the Uley South Basin, South Australia

    Directory of Open Access Journals (Sweden)

    Nara Somaratne

    2015-02-01

    Full Text Available The article “Karst aquifer recharge: Comments on ‘Characteristics of Point Recharge in Karst Aquifers’, by Adrian D. Werner, 2014, Water 6, doi:10.3390/w6123727” provides misrepresentation in some parts of Somaratne [1]. The description of Uley South Quaternary Limestone (QL as unconsolidated or poorly consolidated aeolianite sediments with the presence of well-mixed groundwater in Uley South [2] appears unsubstantiated. Examination of 98 lithological descriptions with corresponding drillers’ logs show only two wells containing bands of unconsolidated sediments. In Uley South basin, about 70% of salinity profiles obtained by electrical conductivity (EC logging from monitoring wells show stratification. The central and north central areas of the basin receive leakage from the Tertiary Sand (TS aquifer thereby influencing QL groundwater characteristics, such as chemistry, age and isotope composition. The presence of conduit pathways is evident in salinity profiles taken away from TS water affected areas. Pumping tests derived aquifer parameters show strong heterogeneity, a typical characteristic of karst aquifers. Uley South QL aquifer recharge is derived from three sources; diffuse recharge, point recharge from sinkholes and continuous leakage of TS water. This limits application of recharge estimation methods, such as the conventional chloride mass balance (CMB as the basic premise of the CMB is violated. The conventional CMB is not suitable for accounting chloride mass balance in groundwater systems displaying extreme range of chloride concentrations and complex mixing [3]. Over simplification of karst aquifer systems to suit application of the conventional CMB or 1-D unsaturated modelling as described in Werner [2], is not suitable use of these recharge estimation methods.

  20. A Case of Hidroacanthoma Simplex Mimicking Bowen s Disease

    Directory of Open Access Journals (Sweden)

    Pinar Ozuguz

    2013-10-01

    Full Text Available Hidroacanthoma simplex is a rare benign tumor that originates from eccrine sweet gland ducts. The lesions are characterized by slowly-growing, flat or slightly elevated, skin-colored, brown or erythematous, verrucous papules or plaques. Clinically, plaques may resemble seborrheic keratosis, basal cell carcinoma and Bowen%u2019s disease. Here, we present a case of atypically localized hidroacanthoma simplex mimicking Bowen%u2019s disease.

  1. A RARE DISEASE OF THE BREAST: BOWEN'S DISEASE

    OpenAIRE

    Murat Burc Yazicioglu; Cidem Tokyol; Kadir Serkan Turel; Ahmet Ilker Keskin; Fatma Aktepe

    2014-01-01

    Bowen's disease (BD) or in situ squamous cell carsinoma of skin, is a malign lesion restricted to the epidermis without evidence of dermal invasion (1). Etiological factors for BD include ultraviolet light, human papillomavirus, immunosuppression and carsinogen agents such as arsenic (2). It's frequently seen in sun-exposed areas of skin such as head, body and extremity, but other sites for example genital areas can also be affected. Bowen's diseas of the niple is extremely rare (3). We re...

  2. A Case of Hidroacanthoma Simplex Mimicking Bowen s Disease

    OpenAIRE

    Pinar Ozuguz

    2013-01-01

    Hidroacanthoma simplex is a rare benign tumor that originates from eccrine sweet gland ducts. The lesions are characterized by slowly-growing, flat or slightly elevated, skin-colored, brown or erythematous, verrucous papules or plaques. Clinically, plaques may resemble seborrheic keratosis, basal cell carcinoma and Bowen%u2019s disease. Here, we present a case of atypically localized hidroacanthoma simplex mimicking Bowen%u2019s disease.

  3. 3D seismic analysis of gravity-driven and basement influenced normal fault growth in the deepwater Otway Basin, Australia

    Science.gov (United States)

    Robson, A. G.; King, R. C.; Holford, S. P.

    2016-08-01

    We use three-dimensional (3D) seismic reflection data to analyse the structural style and growth of a normal fault array located at the present-day shelf-edge break and into the deepwater province of the Otway Basin, southern Australia. The Otway Basin is a Late Jurassic to Cenozoic, rift-to-passive margin basin. The seismic reflection data images a NW-SE (128-308) striking, normal fault array, located within Upper Cretaceous clastic sediments and which consists of ten fault segments. The fault array contains two hard-linked fault assemblages, separated by only 2 km in the dip direction. The gravity-driven, down-dip fault assemblage is entirely contained within the 3D seismic survey, is located over a basement plateau and displays growth commencing and terminating during the Campanian-Maastrichtian, with up to 1.45 km of accumulated throw (vertical displacement). The up-dip normal fault assemblage penetrates deeper than the base of the seismic survey, but is interpreted to be partially linked along strike at depth to major basement-involved normal faults that can be observed on regional 2D seismic lines. This fault assemblage displays growth initiating in the Turonian-Santonian and has accumulated up to 1.74 km of throw. Our detailed analysis of the 3D seismic data constraints post-Cenomanian fault growth of both fault assemblages into four evolutionary stages: [1] Turonian-Santonian basement reactivation during crustal extension between Australia and Antarctica. This either caused the upward propagation of basement-involved normal faults or the nucleation of a vertically isolated normal fault array in shallow cover sediments directly above the reactivated basement-involved faults; [2] continued Campanian-Maastrichtian crustal extension and sediment loading eventually created gravitational instability on the basement plateau, nucleating a second, vertically isolated normal fault array in the cover sediments; [3] eventual hard-linkage of fault segments in both fault

  4. A future geodetic monitoring system for vertical land motion in the Perth basin, Australia

    Science.gov (United States)

    Filmer, Mick; Featherstone, Will; Morgan, Linda; Schenk, Andreas

    2013-04-01

    SAR imagery. The InSAR component is necessary to avoid reliance on discrete monitoring stations and to provide larger scale mapping of the subsidence. As the framework for an ongoing monitoring programme, images are being acquired from the German Aerospace Centre's (DLR's) TerraSAR-X satellite mission under a collaborative science project among Geoscience Australia, Curtin University of Technology, Landgate and Karlsruhe Institute of Technology. This programme initially covers ~13 months (up to 30 images) and will provide sufficient data to lay the foundation for ongoing monitoring. This monitoring programme will be used to determine linear and non-linear VLM in Perth at time scales ranging from seasonal to long term over multiple years.

  5. Controls on syndepositional fracture patterns, Devonian reef complexes, Canning Basin, Western Australia

    Science.gov (United States)

    Frost, Edmund L., III; Kerans, Charles

    2010-09-01

    Syndepositional fractures are an important feature of high-relief carbonate systems and exert a profound control on many facets of platform evolution and reservoir development. Based on data collected from the Canning Basin's Devonian reef complexes this study characterizes syndepositional fracture patterns as a function of variations in: lithofacies, depositional position, stratigraphic architecture, and mechanical stratigraphy. Fracture parameters, such as extension and fracture intensity, are documented to vary strongly as a function of lithofacies. The highest syndepositional extension values occurring in the microbial facies of the Famennian platform margin, with extension values three times higher than observed in equivalent Frasnian strata. Position along the depositional profile exerts a strong control on fracture patterns, with an approximate two-fold increase in syndepositional extension and fracture intensity typically observed from the platform interior to the platform margin. Syndepositional fracture intensity is shown to vary systematically with changes in platform-margin trajectory, with high fracture intensities observed in strongly progradational platforms and decreased fracture development in aggradational and retrogradational platforms. Evidence for the temporal evolution of the mechanical stratigraphy of the Devonian reef complexes is presented, with early-lithified strata effectively behaving as a single, large-scale (50-150 m) mechanical unit during syndepositional fracture development, while secondary fractures become increasingly affected by bed-scale (0.25-5 m) mechanical heterogeneity introduced by progressive diagenesis. The results presented here potentially provide a tool for predicting fracture characteristics (e.g., intensity, orientation, location, and vertical extent) from limited subsurface data and provide a method for characterizing syndepositional deformation in other systems.

  6. Late Devonian carbonate magnetostratigraphy from the Oscar and Horse Spring Ranges, Lennard Shelf, Canning Basin, Western Australia

    Science.gov (United States)

    Hansma, Jeroen; Tohver, Eric; Yan, Maodu; Trinajstic, Kate; Roelofs, Brett; Peek, Sarah; Slotznick, Sarah P.; Kirschvink, Joseph; Playton, Ted; Haines, Peter; Hocking, Roger

    2015-01-01

    The Late Devonian was a time of major evolutionary change encompassing the fifth largest mass extinction, the Frasnian-Famennian event. In order to establish a chronological framework for global correlation before, during, and following the Frasnian-Famennian mass extinction, we carried out a coupled magnetostratigraphic and biostratigraphic study of two stratigraphic sections in the Upper Devonian carbonate reef complexes of the Lennard Shelf, in the Canning Basin, Western Australia. Magnetostratigraphy from these rocks provides the first high-resolution definition of the Late Devonian magnetic polarity timescale. A 581-m-reference section and an 82-m overlapping section through the marginal slope facies (Napier Formation) of the Oscar Range as well as a 117-m section at Horse Spring (Virgin Hills Formation) were sampled at decimeter to meter scale for magnetostratigraphy. Conodont biostratigraphy was used to correlate both sections, and link magnetostratigraphic polarity zones to a globally established biostratigraphy. A stable, Characteristic Remanent Magnetization (ChRM) with dual polarities (NE, shallowly upward and SW, shallowly downward) is recovered from ∼ 60% of all samples, with magnetite inferred to be the chief magnetic carrier from thermal demagnetization characteristics. These directions define a geomagnetic pole at 49.5°S/285.8°E and α95 = 2.4 (n = 501), placing the Canning Basin at 9.9°S during the Late Devonian, consistent with carbonate reef development at this time. A conservative interpretation of the magnetostratigraphy shows the recovery of multiple reversals from both sections, not including possible cryptochrons and short duration magnetozones. Field tests for primary remanence include positive reversal tests and matching magnetozones from an overlapping section in the Oscar Range. A strong correlation was found between magnetic polarity stratigraphies of the Oscar Range and Horse Spring sections, and we correlate 12

  7. A combined chemical, isotopic and microstructural study of pyrite from roll-front uranium deposits, Lake Eyre Basin, South Australia

    Science.gov (United States)

    Ingham, Edwina S.; Cook, Nigel J.; Cliff, John; Ciobanu, Cristiana L.; Huddleston, Adam

    2014-01-01

    The common sulfide mineral pyrite is abundant throughout sedimentary uranium systems at Pepegoona, Pepegoona West and Pannikan, Lake Eyre Basin, South Australia. Combined chemical, isotopic and microstructural analysis of pyrite indicates variation in fluid composition, sulfur source and precipitation conditions during a protracted mineralization event. The results show the significant role played by pyrite as a metal scavenger and monitor of fluid changes in low-temperature hydrothermal systems. In-situ micrometer-scale sulfur isotope analyses of pyrite demonstrated broad-scale isotopic heterogeneity (δ34S = -43.9 to +32.4‰VCDT), indicative of complex, multi-faceted pyrite evolution, and sulfur derived from more than a single source. Preserved textures support this assertion and indicate a genetic model involving more than one phase of pyrite formation. Authigenic pyrite underwent prolonged evolution and recrystallization, evidenced by a genetic relationship between archetypal framboidal aggregates and pyrite euhedra. Secondary hydrothermal pyrite commonly displays hyper-enrichment of several trace elements (Mn, Co, Ni, As, Se, Mo, Sb, W and Tl) in ore-bearing horizons. Hydrothermal fluids of magmatic and meteoric origins supplied metals to the system but the geochemical signature of pyrite suggests a dominantly granitic source and also the influence of mafic rock types. Irregular variation in δ34S, coupled with oscillatory trace element zonation in secondary pyrite, is interpreted in terms of continuous variations in fluid composition and cycles of diagenetic recrystallization. A late-stage oxidizing fluid may have mobilized selenium from pre-existing pyrite. Subsequent restoration of reduced conditions within the aquifer caused ongoing pyrite re-crystallization and precipitation of selenium as native selenium. These results provide the first qualitative constraints on the formation mechanisms of the uranium deposits at Beverley North. Insights into

  8. Measurement of fallout radionuclides, (239)(,240)Pu and (137)Cs, in soil and creek sediment: Sydney Basin, Australia.

    Science.gov (United States)

    Smith, B S; Child, D P; Fierro, D; Harrison, J J; Heijnis, H; Hotchkis, M A C; Johansen, M P; Marx, S; Payne, T E; Zawadzki, A

    2016-01-01

    Soil and sediment samples from the Sydney basin were measured to ascertain fallout radionuclide activity concentrations and atom ratios. Caesium-137 ((137)Cs) was measured using gamma spectroscopy, and plutonium isotopes ((239)Pu and (240)Pu) were quantified using accelerator mass spectrometry (AMS). Fallout radionuclide activity concentrations were variable ranging from 0.6 to 26.1 Bq/kg for (137)Cs and 0.02-0.52 Bq/kg for (239+240)Pu. Radionuclides in creek sediment samples were an order of magnitude lower than in soils. (137)Cs and (239+240)Pu activity concentration in soils were well correlated (r(2) = 0.80) although some deviation was observed in samples collected at higher elevations. Soil ratios of (137)Cs/(239+240)Pu (decay corrected to 1/1/2014) ranged from 11.5 to 52.1 (average = 37.0 ± 12.4) and showed more variability than previous studies. (240)Pu/(239)Pu atom ratios ranged from 0.117 to 0.165 with an average of 0.146 (±0.013) and an error weighted mean of 0.138 (±0.001). These ratios are lower than a previously reported ratio for Sydney, and lower than the global average. However, these ratios are similar to those reported for other sites within Australia that are located away from former weapons testing sites and indicate that atom ratio measurements from other parts of the world are unlikely to be applicable to the Australian context.

  9. Measurement of fallout radionuclides, (239)(,240)Pu and (137)Cs, in soil and creek sediment: Sydney Basin, Australia.

    Science.gov (United States)

    Smith, B S; Child, D P; Fierro, D; Harrison, J J; Heijnis, H; Hotchkis, M A C; Johansen, M P; Marx, S; Payne, T E; Zawadzki, A

    2016-01-01

    Soil and sediment samples from the Sydney basin were measured to ascertain fallout radionuclide activity concentrations and atom ratios. Caesium-137 ((137)Cs) was measured using gamma spectroscopy, and plutonium isotopes ((239)Pu and (240)Pu) were quantified using accelerator mass spectrometry (AMS). Fallout radionuclide activity concentrations were variable ranging from 0.6 to 26.1 Bq/kg for (137)Cs and 0.02-0.52 Bq/kg for (239+240)Pu. Radionuclides in creek sediment samples were an order of magnitude lower than in soils. (137)Cs and (239+240)Pu activity concentration in soils were well correlated (r(2) = 0.80) although some deviation was observed in samples collected at higher elevations. Soil ratios of (137)Cs/(239+240)Pu (decay corrected to 1/1/2014) ranged from 11.5 to 52.1 (average = 37.0 ± 12.4) and showed more variability than previous studies. (240)Pu/(239)Pu atom ratios ranged from 0.117 to 0.165 with an average of 0.146 (±0.013) and an error weighted mean of 0.138 (±0.001). These ratios are lower than a previously reported ratio for Sydney, and lower than the global average. However, these ratios are similar to those reported for other sites within Australia that are located away from former weapons testing sites and indicate that atom ratio measurements from other parts of the world are unlikely to be applicable to the Australian context. PMID:26344369

  10. Drought to flood: a comparative assessment of four parallel surface water treatments during the 2010-2012 inflows to the Murray-Darling Basin, South Australia.

    Science.gov (United States)

    Braun, Kalan; Fabris, Rolando; Morran, Jim; Ho, Lionel; Drikas, Mary

    2014-08-01

    Four treatment processes; conventional coagulation, magnetic ion exchange (MIEX)/coagulation, with and without granular activated carbon (GAC), and membrane treatment combining microfiltration (MF) and nanofiltration (NF), were operated in parallel using the same source water from the Murray-Darling basin in South Australia. During the two year study, high levels of natural organic matter and turbidity arising from floods affecting the Murray-Darling basin in 2010-2012 challenged the four processes. The comparative study indicated that all four processes could effectively meet basic water quality guidelines of turbidity and colour despite challenging source water quality but that the more advanced treatments improved overall organic and bacterial removal. Interestingly, the high organics and turbidity arising from the floods resulted in improved treatment efficiency for all treatments incorporating coagulation to the extent that, despite flood conditions, treated water quality could remain comparatively constant provided that the process was operated and optimised effectively.

  11. Socio-hydrologic Modeling to Understand and Mediate the Competition for Water between Humans and Ecosystems: Murrumbidgee River Basin, Australia

    Science.gov (United States)

    van Emmerik, Tim; Sivapalan, Murugesu; Li, Zheng; Pande, Saket; Savenije, Hubert

    2014-05-01

    Around the world the demand for water resources is growing in order to satisfy rapidly increasing human populations, leading to competition for water between humans and ecosystems. An entirely new and comprehensive quantitative framework is needed to establish a holistic understanding of that competition, thereby enabling development and evaluation of effective mediation strategies. We present a case study centered on the Murrumbidgee river basin in eastern Australia that illustrates the dynamics of the balance between water extraction and use for food production and efforts to mitigate and reverse consequent degradation of the riparian environment. Interactions between patterns of water resources management and climate driven hydrological variability within the prevailing socio-economic environment have contributed to the emergence of new whole system dynamics over the last 100 years. In particular, data analysis reveals a pendulum swing between an exclusive focus on agricultural development and food production in the initial stages of water resources development and its attendant socio-economic benefits, followed by the gradual realization of the adverse environmental impacts, efforts to mitigate these with the use of remedial measures, and ultimately concerted efforts and externally imposed solutions to restore environmental health and ecosystem services. A quasi-distributed coupled socio-hydrologic system model that explicitly includes the two-way coupling between human and hydrological systems, including evolution of human values/norms relating to water and the environment, is able to mimic broad features of this pendulum swing. The model consists of coupled nonlinear differential equations that include four state variables describing the co-evolution of storage capacity, irrigated area, human population, and ecosystem health, which are all connected by feedback mechanisms. The model is used to generate insights into the dominant controls of the trajectory of

  12. Patterns and processes of fluvial discontinuity and sediment residence times on the lower Macquarie River, Murray-Darling Basin, Australia

    Science.gov (United States)

    Larkin, Zacchary; Ralph, Timothy; Hesse, Paul

    2014-05-01

    The supply, transport and deposition of fine-grained sediment are important factors determining the morphology of lowland rivers that experience channel breakdown and have wetlands on their lower reaches. Sediment supply and residence time determine whether reaches accumulate sediment (wetland areas) or erode sediment (channelised areas). This research investigated how processes of sedimentation and erosion drive channel breakdown and reformation in the Macquarie Marshes, a large anastomosing wetland system in the Murray-Darling Basin, Australia. Channel breakdown is attributed to a dominance of in-stream sedimentation that leads to a point where single-thread river channels cannot be maintained and so avulsion and floodout processes create smaller distributary channels and wetlands. Avulsions may reconnect channels, changing the sediment supply regime in those particular channels. Channel reformation occurs on the trunk stream where the floodplain gradient steepens enough to allow convergence of small tributaries, locally increasing stream power (and erosive energy in channels). As each river reach reforms following channel breakdown, the channel is smaller, shallower and straighter than the previous reach. One reach in this system recently (in the 1970s) became connected with a parallel channel through avulsion and has morphological characteristics that indicate a significant change in flow and sediment supply. In a pilot study using uranium-series disequilibrium methods and OSL dating, a sediment residence time of 58 +/- 2 ka was determined for sediment in the base of the active channel and a sediment residence time of 153 +/- 5 ka was determined for sediment buried in an adjacent meander that was cut off from the main channel 1,000 years ago. The apparent dramatic decrease in sediment residence time to this active channel poses an interesting question about the role of relatively new channels in transporting and depositing sediment more rapidly than the

  13. Photodynamic Therapy for Bowen's Disease of the Vulva Area

    OpenAIRE

    Kang, Hong-Kyu; Yun, Jeong-Hwan; Son, Young-Min; Roh, Joo-Young; Lee, Jong-Rok

    2014-01-01

    Bowen's disease is a squamous cell carcinoma in situ and has the potential to progress to a squamous cell carcinoma. The authors treated two female patients (a 39-year-old and a 41-year-old) with Bowen's disease in the vulva area using topical photodynamic therapy (PDT), involving the use of 5-aminolaevulinic acid and a light-emitting diode device. The light was administered at an intensity of 80 mW/cm2 for a dose of 120 J/cm2 biweekly for 6 cycles. The 39-year-old patient showed excellent cl...

  14. Echo Tomography of Sco X-1 using Bowen Fluorescence Lines

    CERN Document Server

    Casares, J; Martínez-Pais, I G; Cornelisse, R; Charles, P A; Marsh, T R; Dhillon, V S; Steeghs, D

    2005-01-01

    We present preliminary results of a simultaneous X-ray/optical campaign of the prototypical LMXB Sco X-1 at 1-10 Hz time resolution. Lightcurves of the high excitation Bowen/HeII emission lines were obtained through narrow interference filters with ULTRACAM, and these were cross-correlated with X-ray lightcurves. We find evidence for correlated variability, in particular when Sco X-1 enters the Flaring Branch. The Bowen/HeII lightcurves lag the X-ray lightcurves with a light travel time which is consistent with reprocessing in the companion star.

  15. New evidence of reproductive organs of Glossopteris based on permineralized fossils from Queensland, Australia. I. Ovulate organ Homevaleia gen. nov.

    Science.gov (United States)

    Nishida, Harufumi; Pigg, Kathleen B; Kudo, Kensuke; Rigby, John F

    2007-07-01

    This study describes Homevaleia gouldii H. Nishida, Pigg, Kudo et Rigby gen. et sp. nov., an ovule-bearing glossopterid organ, based on a combination of recently collected permineralized specimens from the Late Permian Homevale Station locality in the Bowen Basin of Queensland, Australia, and on previously studied material from the 1977 Gould and Delevoryas study. Homevaleia, which resembles the compression-impression genus Dictyopteridium, is an inrolled megasporophyll with a distinct keel that bears numerous (over 70) stalked ovules on its adaxial surface. Ovules are small, oval, with an elaborate mesh-like structure that is developed from the outermost integumentary layers. Specimens interpreted as representing different developmental stages show there is an apparent interrelationship between megagametophyte development and the opening of the surrounding fertile structure for pollination. Together, new information provided by this material enables better understanding of glossopterid reproductive structure and its function in one distinctive form. PMID:17534692

  16. The contorted New England Orogen (eastern Australia): New evidence from U-Pb geochronology of early Permian granitoids

    Science.gov (United States)

    Rosenbaum, Gideon; Li, Pengfei; Rubatto, Daniela

    2012-02-01

    A series of sharp bends (oroclines) are recognized in the Paleozoic to early Mesozoic New England Orogen of eastern Australia. The exact geometry and origin of these bends is obscured by voluminous magmatism and is still debated. Here we present zircon U-Pb ages that confirm the lateral continuation of early Permian (296-288 Ma) granitoids and shed new light on the oroclinal structure. Orogenic curvature is defined by the alignment of early Permian granitoids parallel to the structural grain of the orogen, as well as the curved geometry of sub-vertical deformation fabrics, forearc basin terranes, and serpentinite outcrops. Alternative geometrical interpretations may involve two bends (Texas and Coffs Harbour Oroclines), three bends (+Manning Orocline), or even four bends (+Nambucca Orocline). We argue that the model involving four bends is most consistent with available data, although further kinematic constraints are required to confirm the existence of the Manning and Nambucca Oroclines. A subsequent phase of younger magmatism (Bowen orogeny.

  17. Pockmark development in the Petrel Sub-basin, Timor Sea, Northern Australia: Seabed habitat mapping in support of CO2 storage assessments

    Science.gov (United States)

    Nicholas, W. A.; Nichol, S. L.; Howard, F. J. F.; Picard, K.; Dulfer, H.; Radke, L. C.; Carroll, A. G.; Tran, M.; Siwabessy, P. J. W.

    2014-07-01

    The extent to which fluids may leak from sedimentary basins to the seabed is a critical issue for assessing the potential of a basin for carbon capture and storage. The Petrel Sub-basin, located beneath central and eastern Joseph Bonaparte Gulf in tropical northern Australia, was identified as potentially suitable for the geological storage of CO2 because of its geological characteristics and proximity to offshore gas and petroleum resources. In May 2012, a multidisciplinary marine survey (SOL5463) was undertaken to collect data in two targeted areas of the Petrel Sub-basin to facilitate an assessment of its CO2 storage potential. This paper focuses on Area 1 of that survey, a 471 km2 area of sediment-starved shelf (water depths of 78 to 102 m), characterised by low-gradient plains, low-lying ridges, palaeo-channels and shallow pockmarks. Three pockmark types are recognised: small shallow unit pockmarks 10-20 m in diameter (generally mangrove deposits and shells to have begun after 15.5 cal ka BP when a rapid marine transgression of Bonaparte Shelf associated with meltwater pulse 1A drowned coastal mangrove environments. Pockmark development is likely an ongoing process driven by fluid seepage at the seabed, and sourced from CO2 produced in the shallow sub-surface (<2 m) sediment. No evidence for direct connection to deeper features was observed.

  18. EVALUATION OF CATROSAT 1PAN STEREO AND RESOURCESAT LISS 4 MSS MERGED DATA FOR MORPHOMETRIC ANALYSIS, DELINEATION OF DRAINAGE BASINS AND CODIFICATION IN TAMIL NADU, INDIA AND AUSTRALIA

    Directory of Open Access Journals (Sweden)

    G. S. Mohamed

    2012-07-01

    as well as visual interpretation in conjunction with village cadastral maps has been studied. This research will be useful to consider creation of digital micro watershed atlas for management and protecting area affected by floods as well as for water and land resource management of the River basins in Queensland, New South Wales, South Australia and Victoria states of Australia. The research explains the need of using stream orders, delineation and codification micro watersheds based the principles of Dr.A.N.Khosla. This methodology was used in creation of web site of Districts soil water sheds atlas of Tamil Nadu state. With this principal of codification and delineation of watersheds based on stream order using stereo data of Cartosat 1 PAN 2.5 m data merged with Resourcesat LISS 4 data of 5.5m resolution and updating latest changes as on 2011 with non stereo Geo eye data of 0.5m resolution it is possible to create Australian micro water sheds GIS with deatils of streams with various stream orders, drainage pattern, slope, micro water sheds boundary in 1:5000 scale to manage the flood prone drainage basin in Australia. The High resolution data of satellites data apart from creation Micro watersheds GIS can be used for creation of Urban and Argicultural land parcel owenership details in Micro watershed GIS.

  19. Evaluation of Catrosat 1PAN Stereo and Resourcesat Liss 4 MSS Merged Data for Morphometric Analysis, Delineation of Drainage Basins and Codification in Tamil Nadu, India and Australia

    Science.gov (United States)

    Mohamed, G. S.; Srinivasan, S.; Pandian, R.; Gummidipoondi, R. J.; Venkatchalam, R. V.; Swaminathan. S, S.

    2012-07-01

    interpretation in conjunction with village cadastral maps has been studied. This research will be useful to consider creation of digital micro watershed atlas for management and protecting area affected by floods as well as for water and land resource management of the River basins in Queensland, New South Wales, South Australia and Victoria states of Australia. The research explains the need of using stream orders, delineation and codification micro watersheds based the principles of Dr.A.N.Khosla. This methodology was used in creation of web site of Districts soil water sheds atlas of Tamil Nadu state. With this principal of codification and delineation of watersheds based on stream order using stereo data of Cartosat 1 PAN 2.5 m data merged with Resourcesat LISS 4 data of 5.5m resolution and updating latest changes as on 2011 with non stereo Geo eye data of 0.5m resolution it is possible to create Australian micro water sheds GIS with deatils of streams with various stream orders, drainage pattern, slope, micro water sheds boundary in 1:5000 scale to manage the flood prone drainage basin in Australia. The High resolution data of satellites data apart from creation Micro watersheds GIS can be used for creation of Urban and Argicultural land parcel owenership details in Micro watershed GIS.

  20. Response of riparian vegetation across Australia's largest river basin to inter and intra-annual flooding: dynamics quantified from time series of Landsat and MODIS data

    Science.gov (United States)

    Broich, M.; Tulbure, M. G.; Keith, D.; Kingsford, R.; Lucas, R.; Lippmann, T.

    2014-12-01

    Australia is a continent subject to high rainfall variability. The resulting spatial-temporal pattern of flooding and its influence on riparian vegetation has not been quantified. Here we focused on the floodplains of the entire Murray-Darling Basin (MDB; 72 Landsat path-rows) of Australia as a case study. The MDB is the country's primary agricultural area with scarce water resources impacted by climate change and extensive zones with degrading riparian vegetation. We advance our understanding of the relationship between climate-driven flooding dynamics and vegetation response at the sub-continental to local and inter to intra-annual scale based on two decades of Landsat and one decade of MODIS imagery. We Landsat TM and ETM+ data to synoptically map spatially detailed dynamics of flooding with an internally consistent machine learning algorithm. We derived riparian phenology (Fig 1) from MODIS data and attributed differences in vegetation response to flooding dynamics, vegetation types and sub-basin land use. Vegetation community response to flooding varied in space and time and with vegetation types, densities and location relative to areas frequently flooded. Phenological degradation trends were observed over riparian forests and woodlands in the middle and lower parts of the basin that are primarily farmed and were we identified flooding regimes to have changed the most to less frequent and smaller inundation extents. Conversely, herbaceous vegetation phenology followed primarily a boom and bust cycle related to less extensive flooding dynamics. This pattern was found across different areas of the basin. As expected, flooding regimes and vegetation response patterns were fine grained confirming the choice of a spatially explicit, internally consistent analysis leading the path for ongoing monitoring. Remote sensing-based monitoring of the response of riparian vegetation to flooding can be used to quantify spatially explicit changes in vegetation community

  1. Periungual Bowen's disease successfully treated with photodynamic therapy.

    NARCIS (Netherlands)

    Zink, B.S.; Valente, L.; Ortiz, B.; Caldas, A.; Jeunon, T.; Marques-da-Costa, J.

    2013-01-01

    Bowen's disease or squamous cell carcinoma in situ is a malignancy of the skin confined to the epidermis that unusually involves the nail apparatus. The ideal treatment should complete clear the tumor, with preservation of the cosmetics and the function of the finger, which can be very difficult to

  2. Eccrine porocarcinoma arising within an area of Bowen disease.

    LENUS (Irish Health Repository)

    Lowney, A C

    2012-03-01

    Summary Very little is known about the aetiology of eccrine porocarcinoma (EP), a rare malignant sweat-gland tumour. Most reported cases have arisen de novo, or from a benign eccrine poroma. We report an unusual case, in which eccrine porocarcinoma arose at the exact site of pre-existing Bowen disease (BD).

  3. Merkel cell carcinoma, Bowen's disease and chronic occupational arsenic poisoning.

    Science.gov (United States)

    Tsuruta, D; Hamada, T; Mochida, K; Nakagawa, K; Kobayashi, H; Ishii, M

    1998-08-01

    We diagnosed a unique case of Merkel cell carcinoma (MCC) coexisting with Bowen's disease on the sole of the foot of a 72-year-old man who had worked for about 4 years in a factory handling inorganic arsenic. He had a past history of arsenical keratosis and multiple Bowen's disease. The tumour first appeared as a reddish macule and then showed marked growth over the next month. The tumour was excised and the specimen was examined histopathologically. The tumour consisted of two components: a group of atypical cells representing Bowen's disease in the epidermis and another group of atypical cells with a trabecular pattern characteristic of MCC in the dermis. Neither group of cells showed transitional findings, and the tumour elements were divided by a clear basement membrane. The tumour cells in the dermis were positive for neurone-specific enolase, and on electron microscopy had dense core granules in the cytoplasm. Inorganic arsenic can cause various cutaneous neoplasms, but to our knowledge, this is the first report of a case of MCC associated with Bowen's disease.

  4. All in the family: a belated response to Knudson-Martin's feminist revision of Bowen theory.

    Science.gov (United States)

    Horne, K Blake; Hicks, Mary W

    2002-01-01

    The first formal attempt at revising Bowen theory within the marriage and family therapy literature is represented in the work of Knudson-Martin (1994). Claiming that several of the theory's concepts are defined at odds with female development, Knudson-Martin (1994) reconceptualizes and expands Bowen theory to rectify these perceived shortcomings. In turn, we address several fundamental concerns with Knudson-Martin's critique and revision of Bowen theory. An alternative representation of Bowen Theory, as well as its relationship to feminist thought, is put forth. Suggestions for the field's future relationship to Bowen theory are also discussed.

  5. Benchmarking Passive Seismic Methods of Imaging Surface Wave Velocity Interfaces Down to 300 m — Mapping Murray Basin Thickness in Southeastern Australia

    Science.gov (United States)

    Gorbatov, A.; Czarnota, K.

    2015-12-01

    In shallow passive seismology it is generally thought that the spatial autocorrelation (SPAC) method is more robust than the horizontal over vertical spectral ratio (HVSR) method at resolving the depth to surface-wave velocity (Vs) interfaces. Here we present results of a field test of these two methods over ten drill sites in Victoria, Australia. The target interface is the base of Cenozoic unconsolidated to semi-consolidated clastic and/or carbonate sediments of the Murray Basin, which overlie Paleozoic crystalline rocks. Drilled depths of this interface are between 27 and 300 m. A three-arm spiral array, with a radius of 250 m, consisting of 13 Trillium compact broadband seismometers was deployed at each site for 7-21 hours. The Vs architecture beneath each site was determined through nonlinear inversion of HVSR and SPAC data using the neighborhood algorithm of Sambridge (1999) implemented in geopsy by Wathelet et al (2005). The HVSR technique yielded depth estimates, of the target interface (Vs > 1000 m/s), generally within 20% error. Successful estimates were even obtained at a site with an inverted velocity profile, where Quaternary basalts overlie Neogene sediments. Half of the SPAC estimates showed significantly higher errors than obtained using HVSR. Joint inversion provided the most reliable estimates but was unstable at three sites. We attribute the surprising success of HVSR over SPAC to a low content of transient signals within the seismic record caused by low degrees of anthropogenic noise at the benchmark sites. At a few sites SPAC curves showed clear overtones suggesting that more reliable SPAC estimates maybe obtained utilizing a multi modal inversion. Nevertheless, our study seems to indicate that reliable basin thickness estimates in remote Australia can be obtained utilizing HVSR data from a single seismometer, without a priori knowledge of the surface-wave velocity of the basin material, thereby negating the need to deploy cumbersome arrays.

  6. Geochemistry and Age Dating of Ancient and Modern CO2 -rich Hydrothermal Systems as Natural Analogues for CO2 storage: Examples from Australia and Eastern Mediterranean

    Science.gov (United States)

    Uysal, I.; Golding, S.; Esterle, J.; Feng, Y.; Zhao, J.

    2008-12-01

    We investigated physico-chemical conditions during mineral authigenesis in CO2-rich ancient and recent hydrothermal environments in Eastern Australia (Gunnedah and Bowen Basins) and Turkey, respectively. We performed Rb-Sr and U-series dating of clay-carbonate associations and travertine veins respectively to evaluate the degassing and storage history of CO2. Intense carbonate veining and coal seam cleat mineralisation in the Gunnedah Basin took place as a result of heat and CO2 release associated with magmatism during the breakup of Gondwana in the Late Cretaceous. Widespread carbonate veining and cementation in the Bowen Basin occurred as products of basin-wide CO2 rich meteoric hydrothermal fluids during the Late Triassic extension. CO2 has largely been used for carbonate precipitation (calcite, siderite, ankerite and dawsonite) in eastern Australian basins; however, some high proportion of CO2 has been stored in coal seams as adsorbed molecules on coal. Significant CO2 degassing is common in geothermal fields in Turkey, as manifested by recent deposition of travertine pools and terraces as well as travertine vein networks in damage zones of active major fault systems. Trace element geochemistry indicates that transient ascent of CO2-bearing fluids during seismic strain cycles without significant interaction with basement and host rocks resulted in rapid precipitation of the vein travertine near the surface. Such veins and associated breccias formed by hydraulic fracturing in response to overpressure of CO2-rich fluids. Correlation of high-precision U-series ages with global/regional climate events indicates that late Quaternary climate variability may have controlled the geothermal water circulation that regulates CO2 accumulation and the generation of CO2 over-pressurised reservoirs and their behaviour during seismic events.

  7. Obituary: George Hamilton Bowen Jr. (1925-2009)

    Science.gov (United States)

    Willson, Lee Anne; Struck, Curtis

    2011-12-01

    Our colleague and collaborator George Hamilton Bowen, Jr., passed away November 1, 2009 in Ames, Iowa. George was born June 20, 1925 in Tulsa, Oklahoma to George and Dorothy (Huntington) Bowen. He married Marjorie Brown June 19, 1948 in Redondo Beach, California; they had five children, with eight grandchildren and five great-grandchildren at the time of his death. George H. Bowen's third or perhaps his fourth career was in astronomy. He was drafted into the navy in 1944, at the end of his first year as a student at Caltech, and ended his war-time service as an electronic technician on the aircraft carrier Shangri-La. He later said "In just nine months, starting from scratch (Ohm's law!), we learned an amazing amount - not by memorization, of course, but by study and real understanding of the basic function of the most advanced AC circuits then being used for instrumentation, measurements, communications, control systems, and much more." He gained a confidence that he could quickly and accurately diagnose and solve technical problems that stood him well in future work. One accomplishment he took particular pride in was figuring out how the radar control used cams and gears to solve the trigonometry for accurate pointing. He also described how the captain was alarmed when weather conditions changed so that refraction no longer showed them distant, small boats around the curvature of Earth. After the war, George Bowen returned to undergraduate and eventually graduate study at Caltech, where he was recruited to the biophysics research group headed by future Nobel Laureate Max Delbrück. George often described his joy in working with these first-rate scientists and finding himself accepted as a part of the effort. He finished his BS with honors in 1949 and his PhD in 1953 with a thesis on "Kinetic Studies on the Mechanism of Photoreactivation of Bacteriophase T2 Inactivated by Ultraviolet Light" involving work with E Coli. This work was supported by grants from the U

  8. Bowen's Disease of the Vulva:Report of 8 Cases%外阴Bowen's病8例分析

    Institute of Scientific and Technical Information of China (English)

    王桂香; 李巍; 吴令英; 章文华

    2004-01-01

    目的:总结外阴Bowen's病的临床病理特点、治疗方法和预后.方法:回顾性分析我院1993年2月至2000年1月收治的8例外阴Bowen's病的临床资料.结果:8例外阴Bowen's病患者的发病年龄为23~57岁,平均年龄38岁,均有不同程度的外阴搔痒及局部斑片状突起.8例中4例行局部肿瘤切除,另4例采用单纯外阴切除术.随诊18个月~8年,其中1例在初次手术后6个月复发,占12.5%,再行单纯外阴切除术,至今已5年无复发.其余7例无复发迹象.结论:外阴Bowen's病是一种特殊类型的外阴皮肤上皮内鳞状上皮癌,局部肿瘤切除或单纯外阴切除可取得良好预后,复发后重复手术仍可得到治愈.

  9. Mapping the hydraulic connection between a coalbed and adjacent aquifer: example of the coal-seam gas resource area, north Galilee Basin, Australia

    Science.gov (United States)

    Jiang, Zhenjiao; Mariethoz, Gregoire; Schrank, Christoph; Cox, Malcolm; Timms, Wendy

    2016-07-01

    Coal-seam gas production requires groundwater extraction from coal-bearing formations to reduce the hydraulic pressure and improve gas recovery. In layered sedimentary basins, the coalbeds are often separated from freshwater aquifers by low-permeability aquitards. However, hydraulic connection between the coalbed and aquifers is possible due to the heterogeneity in the aquitard such as the existence of conductive faults or sandy channel deposits. For coal-seam gas extraction operations, it is desirable to identify areas in a basin where the probability of hydraulic connection between the coalbed and aquifers is low in order to avoid unnecessary loss of groundwater from aquifers and gas production problems. A connection indicator, the groundwater age indictor (GAI), is proposed, to quantify the degree of hydraulic connection. The spatial distribution of GAI can indicate the optimum positions for gas/water extraction in the coalbed. Depressurizing the coalbed at locations with a low GAI would result in little or no interaction with the aquifer when compared to the other positions. The concept of GAI is validated on synthetic cases and is then applied to the north Galilee Basin, Australia, to assess the degree of hydraulic connection between the Aramac Coal Measure and the water-bearing formations in the Great Artesian Basin, which are separated by an aquitard, the Betts Creek Beds. It is found that the GAI is higher in the western part of the basin, indicating a higher risk to depressurization of the coalbed in this region due to the strong hydraulic connection between the coalbed and the overlying aquifer.

  10. Platform margins, reef facies, and microbial carbonates; a comparison of Devonian reef complexes in the Canning Basin, Western Australia, and the Guilin region, South China

    Science.gov (United States)

    Shen, Jian-Wei; Webb, Gregory E.; Jell, John S.

    2008-05-01

    Devonian reef complexes were well developed in Western Australia and South China, but no detailed direct comparison has been made between reef building in the two regions. The regions differ in several respects, including tectonic, stratigraphic and palaeoceanographic-palaeogeographic settings, and the reef building styles reflect minor differences in reef builders and reef facies. Similarities and differences between the two reef complexes provide insights into the characteristics of platform margins, reef facies and microbial carbonates of both regions. Here we present a comparison of platform margin types from different stratigraphic positions in the Late Devonian reef complex of the Canning Basin, Western Australia and Middle and Late Devonian margin to marginal slope successions in Guilin, South China. Comparisons are integrated into a review of the reefal stratigraphy of both regions. Reef facies, reef complex architecture, temporal reef builder associations, 2nd order stratigraphy and platform cyclicity in the two regions were generally similar where the successions overlap temporally. However, carbonate deposition began earlier in South China. Carbonate complexes were also more widespread in South China and represent a thicker succession overall. Platforms in the Canning Basin grew directly on Precambrian crystalline basement or early Palaeozoic sedimentary rocks, but in South China, carbonate complexes developed conformably on older Devonian siliciclastic strata. Pre-Frasnian reef facies in South China had more abundant skeletal frameworks than in Canning Basin reefs of equivalent age, and Famennian shoaling margins containing various microbial reefs may have been more common and probably more diverse in South China. However, Late Devonian platform margin types have been documented more completely in the Canning Basin. Deep intra-platform troughs (deep depressions containing non-carbonate pelagic sediments — Nandan-type successions) that developed along

  11. Preliminary low-T thermochronology of basement rocks and cover sequences in NE Australia

    Science.gov (United States)

    Verdel, C.; Stockli, D. F.

    2013-12-01

    We measured apatite and zircon (U-Th)/He ages from basement rocks of the Thomson Orogen and overlying Paleozoic strata in the back-arc of the New England Orogen in NE Australia. Zircon (U-Th)/He ages from cover sequences and most basement samples (including those recovered from boreholes at depths of up to 1.1 km) are characterized by large inter- and intra-sample variability and range from approximately 200 to 350 Ma. Our interpretation is that this large range results from protracted residence of these rocks in the zircon (U-Th)/He partial retention zone (temperatures of roughly 130-200 °C) during a ~100 My period that encompassed late Carboniferous-early Permian extensional exhumation, Triassic burial beneath thick sedimentary basins, and Late Triassic tectonic denudation related to retroarc shortening during the Hunter-Bowen Orogeny. Relatively tightly-clustered Paleogene zircon (U-Th)/He ages from an exposure of Ordovician granitic rocks in the core of a structural dome in east-central Queensland are exceptions to this pattern. These granitoids also have Paleogene apatite (U-Th)/He ages, suggesting either rapid Eocene-Oligocene exhumation of the dome or resetting of both apatite and zircon (U-Th)/He ages by nearby Paleogene magmas. Apatite (U-Th)/He data from late Permian sandstone in the Bowen Basin also suggest cooling to near-surface conditions during the Paleogene. Overall, these data refine the timing of major extensional and contractional events that have affected the back-arc of the northern New England Orogen over approximately the last 300 My.

  12. Orthorhombic fault fracture patterns and non-plane strain in a synthetic transfer zone during rifting: Lennard shelf, Canning basin, Western Australia

    Science.gov (United States)

    Miller, John McL.; Nelson, E. P.; Hitzman, M.; Muccilli, P.; Hall, W. D. M.

    2007-06-01

    A complex series of faults occur within transfer zones normal to the WNW-trending rifted northern margin of the Canning basin (Western Australia). These zones controlled basinal fluid flow and the formation of some carbonate-hosted Mississippi Valley-type Zn-Pb deposits along the basin margin during Devonian to Carboniferous rifting. The study area has a regional fault geometry similar to a synthetic overlapping transfer zone. Surface and underground mapping in this transfer zone, combined with 3D modelling, indicate the faults and related extension fractures have an orthorhombic geometry. The orthorhombic fault-fracture mesh developed in response to three-dimensional non-plane strain in which the intermediate finite extension magnitude was non-zero. Pre-mineralisation marine calcite fill in the fault-fracture mesh indicates that it formed early in the deformation history. Later deformation that overprints the Zn-Pb mineralisation and fault-fracture mesh, was associated with a different maximum extension direction and this modified and reactivated the faults with both dip-slip and oblique-slip movement and tilting of earlier structures. The orthorhombic geometry is not observed at a regional scale (>10 × 10 km), indicating probable scale-dependant behaviour. This study indicates that this transfer zone developed either by (1) strain partitioning with synchronous strike-slip structures and adjacent zones of non-plane extension, or (2) by a component of non-plane extension sub-parallel to the basin margin followed by subsequent transtensional overprint of the system (preferred model). Synthetic overlapping transfer zones are inferred to be key regions where orthorhombic fault geometries may develop.

  13. A transect across Australia's southern margin in the Otway Basin region: crustal architecture and the nature of rifting from wide-angle seismic profiling

    Science.gov (United States)

    Finlayson, D. M.; Collins, C. D. N.; Lukaszyk, I.; Chudyk, E. C.

    1998-03-01

    The Otway Basin in southeastern Australia formed on a triangular-shaped area of extended continental lithosphere during two extensional episodes in Cretaceous-to-Miocene times which ultimately led to the separation of Australia and Antarctica. The velocity structure and crustal architecture of the Otway continental margin has been interpreted from offshore-onshore wide-angle seismic profiling data along a transect extending from near the northern Otway Basin margin with Palaeozoic outcrop to the deep ocean basin under the Southern Ocean. Along this transect, the Otway Continental Margin (OCM) Transect, the onshore half-graben geometry of Early Cretaceous deposition gives way to a 5-km-thick basin sequence (P-wave velocity 2.2-4.6 km/s) extending down the continental slope offshore to at least 60 km from the shoreline. At 120 km from the nearest shore, sonobuoy data indicate a 4-5 km sedimentary sequence overlying 7 km of crustal basement rocks above the Moho at 15 km depth (water depth 4220 m). Conspicuous strong Moho reflections are evident under the continental slope at about 10.2 s TWT. Basement is interpreted to be attenuated/faulted Palaeozoic rocks of the Delamerian and Lachlan Orogens (intruded with Jurassic volcanics) that thin from 16 km onshore to about 3.5 km at 120 km from the nearest shore. These rocks comprise a 3 km section that has a velocity of 5.5-5.7 km/s overlying deeper basement with a velocity of 6.15-6.35 km/s. Over the same distance the Moho shallows from a depth of 30 km onshore to 15 km depth at 120 km from the nearest shore, and then to about 12 km in the deep ocean at the limits of the profile (water depth 5200 m). The continent-ocean boundary (COB) is interpreted to be at a prominent topographic inflection point at the bottom of the continental slope in 4800 m of water. P-wave velocities in the lower crust are 6.4-6.8 km/s above a transition to the Moho, with an upper mantle velocity of 8.05 km/s. There is no evidence of massive high

  14. Multiple Pigmented Bowen's Disease: A Diagnostic and Therapeutic Dilemma

    OpenAIRE

    Pratik Gahalaut; Madhur Kant Rastogi; Nitin Mishra; Sandhya Chauhan

    2012-01-01

    Bowens' disease (BD) is a precancerous condition of skin and/or mucosa with a predilection towards sun-exposed areas. Extensive literature research failed to reveal any case of multiple pigmented BD in type V Fitzpatrick skin. Multiple BD is a therapeutic challenge with a tendency to recur. Here we present an otherwise healthy Indian male having multiple pigmented lesions of BD on sun-protected sites of the body mimicking malignant melanoma. These lesions were refractory to treatment with dif...

  15. Arsenic-related Bowen's disease, palmar keratosis, and skin cancer.

    OpenAIRE

    Cöl, M; Cöl, C; Soran, A; Sayli, B S; Oztürk, S

    1999-01-01

    Chronic arsenical intoxication can still be found in environmental and industrial settings. Symptoms of chronic arsenic intoxication include general pigmentation or focal "raindrop" pigmentation of the skin and the appearance of hyperkeratosis of the palms of the hands and soles of the feet. In addition to arsenic-related skin diseases including keratosis, Bowen's disease, basal-cell-carcinoma, and squamous-cell carcinoma, there is also an increased risk of some internal malignancies. Arsenic...

  16. Muddied Waters: the case for mitigating sediment and nutrient flux to optimise restoration response in the Murray-Darling Basin, Australia.

    Directory of Open Access Journals (Sweden)

    Peter Andrew Gell

    2016-03-01

    Full Text Available The waters of the Murray Darling Basin, Australia, have endured multiple stressors for more than a century. Detectable salinisation impacts are evident from 1880 CE and elevated fluxes of sediments and nutrients are now widespread. Most wetlands examined paleolimnologically have shown increased sedimentation rates or have lost aquatic plant communities due to the shading effect of increased turbidity, prompting the observation that the waterways of the Murray Darling Basin are among ten Australian ecosystems most at risk from tipping points. This post-European heightened sediment flux threatens the potential ecological recovery from the application of scarce and expensive environmental water. Nutrients and fine sediments are implicated as drivers of regime shifts that advantage phytoplankton and inhibit the growth of productive macrophyte beds. However, with the river channels identified as likely sources of sediments and sediment-bound phosphorous, it remains possible that the documented ecological changes represent an ongoing response from continued doses from the River. Syntheses of multiple paleolimnological records provide evidence for the management focus to be on sediment supply to maximise the ecological benefit from environmental flow allocations. Here we use paleolimnology to examine in detail the nature and magnitude of the response in a subset of 17 wetlands, to propose means of optimising the ecological bounce from the release of river waters, encumbered with high doses of sediments and nutrients, to wetlands and floodplains.

  17. Response of Riparian Vegetation in Australia's Largest River Basin to Inter and Intra-Annual Climate Variability and Flooding as Quantified with Landsat and MODIS

    Science.gov (United States)

    Broich, M.; Tulbure, M. G.

    2015-12-01

    Australia is a continent subject to high rainfall variability, which has major influences on runoff and vegetation dynamics. However, the resulting spatial-temporal pattern of flooding and its influence on riparian vegetation has not been quantified in a spatially explicit way. Here we focused on the floodplains of the entire Murray-Darling Basin (MDB), an area that covers over 1M km^2, as a case study. The MDB is the country's primary agricultural area with scarce water resources subject to competing demands and impacted by climate change and more recently by the Millennium Drought (1999-2009). Riparian vegetation in the MDB floodplain suffered extensive decline providing a dramatic degradation of riparian vegetation. We quantified the spatial-temporal impact of rainfall, temperature and flooding patters on vegetation dynamics at the sub- continental to local scales and across inter to intra-annual time scales based on three decades of Landsat (25k images), Bureau of Meteorology data and one decade of MODIS data. Vegetation response varied in space and time and with vegetation types, densities and location relative to areas frequently flooded. Vegetation degradation trends were observed over riparian forests and woodlands in areas where flooding regimes have changed to less frequent and smaller inundation extents. Conversely, herbaceous vegetation phenology followed primarily a 'boom' and 'bust' cycle, related to inter-annual rainfall variability. Spatial patters of vegetation degradation changed along the N-S rainfall gradient but flooding regimes and vegetation degradation patterns also varied at finer scale, highlighting the importance of a spatially explicit, internally consistent analysis and setting the stage for investigating further cross-scale relationships. Results are of interest for land and water management decisions. The approach developed here can be applied to other areas globally such as the Nile river basin and Okavango River delta in Africa or

  18. Obituary: George Hamilton Bowen Jr. (1925-2009)

    Science.gov (United States)

    Willson, Lee Anne; Struck, Curtis

    2011-12-01

    Our colleague and collaborator George Hamilton Bowen, Jr., passed away November 1, 2009 in Ames, Iowa. George was born June 20, 1925 in Tulsa, Oklahoma to George and Dorothy (Huntington) Bowen. He married Marjorie Brown June 19, 1948 in Redondo Beach, California; they had five children, with eight grandchildren and five great-grandchildren at the time of his death. George H. Bowen's third or perhaps his fourth career was in astronomy. He was drafted into the navy in 1944, at the end of his first year as a student at Caltech, and ended his war-time service as an electronic technician on the aircraft carrier Shangri-La. He later said "In just nine months, starting from scratch (Ohm's law!), we learned an amazing amount - not by memorization, of course, but by study and real understanding of the basic function of the most advanced AC circuits then being used for instrumentation, measurements, communications, control systems, and much more." He gained a confidence that he could quickly and accurately diagnose and solve technical problems that stood him well in future work. One accomplishment he took particular pride in was figuring out how the radar control used cams and gears to solve the trigonometry for accurate pointing. He also described how the captain was alarmed when weather conditions changed so that refraction no longer showed them distant, small boats around the curvature of Earth. After the war, George Bowen returned to undergraduate and eventually graduate study at Caltech, where he was recruited to the biophysics research group headed by future Nobel Laureate Max Delbrück. George often described his joy in working with these first-rate scientists and finding himself accepted as a part of the effort. He finished his BS with honors in 1949 and his PhD in 1953 with a thesis on "Kinetic Studies on the Mechanism of Photoreactivation of Bacteriophase T2 Inactivated by Ultraviolet Light" involving work with E Coli. This work was supported by grants from the U

  19. Sedimentology, origin and gold potential of the Late Archean Lalla Rookh Basin, East Pilbara Block, Western Australia

    International Nuclear Information System (INIS)

    Terrigenous clastic sequences comprising the Lalla Rookh Formation rest with angular unconformity on the 3,550-3,000 Myr granitoid-greenstone terrain of the east Pilbara block. Outcrop of the Lalla Rookh Formation is confined to an elongate structural basin with dimensions of 50 km x 12 km that is bounded by high-angle faults and unconformities with older supracrustal rocks and younger ca 2,800 Myr old metasedimentary rocks. The results of a sedimentologic basin analysis suggest that the configuration of the original depository was similar to the present structural basin. The basin fill, attaining a maximum preserved thickness of 3,000 m, consists of five depositional facies; 1) alluvial-fan and talus-slope; 2) braided-stream; 3) flood-plain; 4) fan-delta; and 5) lacustrine. Braided-stream deposits define the depositional axis of the basin and include various proximal-conglomerate to distal-sandstone assemblages. Significant heavy-mineral concentrations are located in: 1) stacked sequences of proximal core-zone conglomerates; 2) specific beds of conglomerate in stacked sequences of proximal to medial core-zones; 3) telescoped sequences of conglomerates in proximal to distal core-zones; 4) specific beds in stacked sequences of distal sandstones; 5) stacked ''levee'' sequences of sandstone lateral to proximal core-zones; and 6) basal diamictites of debris-flow origin in alluvial-fan facies. Potentially economic gold placers are developed on low-angle, intraformational unconformities. The basin analysis indicates that broad exploration targets for gold-pyrite placers can be identified by recognising suitable facies and facies assemblages. Specific targets are delineated using geochemistry which identifies anomalous concentrations of heavy minerals and sulphides. Two lines of evidence suggest that there is low potential to develop gold placers in the Lalla Rookh Formation: the lack of conclusive evidence that it post-dates a major metamorphic, tectonic and

  20. Dermoscopy of Bowen's disease: pigmented variant on the penis Dermatoscopia da doença de Bowen: variante pigmentada no pênis

    OpenAIRE

    Priscila Ishioka; Sérgio Yamada; Nilceo Schwery Michalany; Sérgio Henrique Hirata

    2012-01-01

    Pigmented Bowen's disease (PBD) is a variant of squamous cell carcinoma in situ and represents less than 2% of cases of Bowen's disease. It is characterized by a sharply demarcated, pigmented plaque with a scaly or crusted surface on intertriginous and genital areas. The authors describe a case of PBD on the penis and analyze the dermoscopic aspects of this type of lesion.A doença de Bowen Pigmentada (DBP) é uma variante do carcinoma espinocelular in situ e compreende menos de 2% dos casos da...

  1. Underworld and multi-basin heat flow

    Science.gov (United States)

    Quenette, S. M.; O'Neill, C.; Moresi, L. N.; Danis, C. R.; Mansour, J.

    2011-12-01

    We present an over arching method for non-linear heat flow assessments of large, multi-basin systems. Our example is the Sydney-, Gunnedah-, Bowen basins (Danis et al 2011), which covers an area of 800kms by 1900kms and depth of 5kms, on the east coast of Australia. It is used as a baseline towards further fluid and structural geodynamics oriented analysis. In contrast to reservoir scale geothermal models - basin, multi-basin and towards lithosphere scale models exhibit their own challenges in terms of physical/rheological behaviour and computational tractability. For instance we model a non-linear heat flow by means of temperature dependent conductivity, as indicated by Clauser and Huenges (1995), which allows crystalline basement rocks, such as granites, to show for example a significant decrease in conductivity from ambient temperature up to around 400C, dropping from around 3 mK**(units) to around 2. For this modelling, a specialisation of the geodynamics code 'Underworld' (Moresi et al 2007) called Underworld-GT is used. A toolbox is added to the otherwise un-touched Underworld code adding geothermal workflow and context to Underworld. A particular novel feature is the ability to load stratigraphic layers, and/or GoCAD or GeoModeller voxel sets as the constraining geological geometry, whilst allowing the heat assessment models to scale from 1 process to 1000s. Another is the ability to prescribe synthetic drill holes, and its use in stochastic-oriented assessments of model parameters. Following the Underworld platform's approach and its simple PDE abstraction layer, these model configurations from a baseline for further additions to the governing equations such as fluid flow and structure, enabling a bridge between reservoir and continental scale dynamics, albeit with their own computational challenges.

  2. GRACE Assimilation into Hydrological Model Improves Representation of Drought-induced Groundwater Trend over Murray-Darling Basin, Australia

    Science.gov (United States)

    Schumacher, Maike; Forootan, Ehsan; Van Dijk, Albert I. J. M.; Müller Schmied, Hannes; Crosbie, Russell S.; Kusche, Jürgen; Döll, Petra

    2016-04-01

    The Murray-Darling Basin, one of the largest and driest river basins over the world, experienced a long-term drought (over 2003-2009), the so-called Millennium Drought. As a result, the terrestrial water storage in the region decreased, which was attributed to dry meteorological conditions and extensive irrigation for agriculture. We used simulations of the WaterGAP Global Hydrology Model (WGHM) driven by monthly climate fields from the Climate Research Unit's Time Series (CRU TS 3.2) and precipitation data from the Global Precipitation Climatology Center (GPCC) to estimate linear trends in soil, surface and groundwater compartments, as well as total water storage changes (TWSC). However, the model was not able to capture the effect of the Millennium Drought on the storage compartments likely due to missing processes in dry regions or climate forcing uncertainties. Particularly, TWSC simulated by standard WGHM did not reproduce the negative trend during 2003-2009. Therefore, in this study, we investigate whether assimilating TWSC from the Gravity Recovery And Climate Experiment (GRACE) satellite mission into WGHM enables a more realistic representation of the Millennium Drought on the basin hydrology. Firstly, the quality of monthly GRACE TWSC and its post-processing over the Murray-Darling Basin was assessed. An improved calibration and data assimilation (C/DA) approach (Schumacher et al., JoG-2016) was then applied to integrate GRACE TWSC along with its full error covariance information into WGHM during 2003-2009. Independent observations of soil moisture, groundwater and surface water extent were used to validate the model outputs after C/DA. Our investigations indicate that the integration of GRACE data indeed introduces a negative trend to TWSC simulations of WGHM, which occurred predominantly in the south (Murray Basin). The trend was found to be associated with the changes in groundwater storage, which was confirmed through validation with in

  3. Dermoscopy of Bowen's disease: pigmented variant on the penis Dermatoscopia da doença de Bowen: variante pigmentada no pênis

    Directory of Open Access Journals (Sweden)

    Priscila Ishioka

    2012-06-01

    Full Text Available Pigmented Bowen's disease (PBD is a variant of squamous cell carcinoma in situ and represents less than 2% of cases of Bowen's disease. It is characterized by a sharply demarcated, pigmented plaque with a scaly or crusted surface on intertriginous and genital areas. The authors describe a case of PBD on the penis and analyze the dermoscopic aspects of this type of lesion.A doença de Bowen Pigmentada (DBP é uma variante do carcinoma espinocelular in situ e compreende menos de 2% dos casos da Doença de Bowen. Apresenta-se como placa pigmentada, hiperqueratósica, delimitada, localizada em áreas intertriginosas e anogenital. Os autores descrevem um caso de DBP no pênis e abordam os aspectos dermatoscópicos dessa lesão.

  4. Mold brachytherapy in Bowen's disease: a case report and review of the literature

    OpenAIRE

    HÜRMÜZ, Pervin; EVANS, Sibel Ersoy; YAPICI, Bülent; GÜRDALLI, Salih; SAĞLAM, Yücel; ŞAHİN, Sedef; ÖZYAR, Enis

    2006-01-01

    Bowen's disease is a disease that must be treated because of its potential to progress to squamous cell carcinoma. There are many treatment options including radiotherapy. Radiotherapy is an effective in the treatment with a variety of application procedures. Here, we present a patient with Bowen disease who was treated with mold brachytherapy in our department and a review of the literature was made.

  5. A Comparative Assessment of Water Markets: Insights from the Murray-Darling Basin of Australia and the Western US

    OpenAIRE

    R. Quentin Grafton; Gary D. Libecap; Eric C. Edwards; R. J. (Bob) O'Brien; Clay Landry

    2011-01-01

    Water markets in Australia’s Murray-Darling Basin (MDB) and the US west are compared in terms of their ability to allocate scarce water resources. The study finds that the gains from trade in the MDB are worth hundreds of millions of dollars per year. Total market turnover in water rights exceeds $2 billion per year while the volume of trade exceeds over 20% of surface water extractions. In Arizona, California, Colorado, Nevada, and Texas, trades of committed water annually range between 5% a...

  6. Using 14C and 3H to delineate a recharge 'window' into the Perth Basin aquifers, North Gnangara groundwater system, Western Australia.

    Science.gov (United States)

    Meredith, Karina; Cendón, Dioni I; Pigois, Jon-Philippe; Hollins, Suzanne; Jacobsen, Geraldine

    2012-01-01

    The Gnangara Mound and the underlying Perth Basin aquifers are the largest source of groundwater for the southwest of Australia, supplying between 35 and 50% of Perth's potable water (2009-2010). However, declining health of wetlands on the Mound coupled with the reduction in groundwater levels from increased irrigation demands and drier climatic conditions means this resource is experiencing increased pressures. The northern Gnangara is an area where the Yarragadee aquifer occurs at shallow depths (~50 m) and is in direct contact with the superficial aquifer, suggesting the possibility of direct recharge into a generally confined aquifer. Environmental isotopes ((14)C and (3)H) and hydrochemical modelling were used to assess the presence of a recharge 'window' as well as understand the groundwater residence time within different aquifers. Forty-nine groundwater samples were collected from depths ranging from 11 to 311 m below ground surface. The isotopic variation observed in the superficial aquifer was found to be controlled by the different lithologies present, i.e. quartz-rich Bassendean Sand and carbonate-rich sediments of the Ascot Formation. Rainfall recharge into the Bassendean Sand inherits its dissolved inorganic carbon from the soil CO(2). Organic matter throughout the soil profile is degraded by oxidation leading to anoxic/acidic groundwater, which if in contact with the Ascot Formation leads to enhanced dissolution of carbonates. Hydrochemical mass balance modelling showed that carbonate dissolution could contribute 1-2 mmol kg(-1) of carbon to groundwaters recharged through the Ascot Formation. The corrected groundwater residence times of the Yarragadee aquifer in the northern part of the study area ranged from 23 to 35 ka, while waters in the southeastern corner ranged from sub-modern to 2 ka. Groundwater ages increase with distance radiating from the recharge 'window'. This study delineates a recharge 'window' into the commonly presumed confined

  7. Using 14C and 3H to delineate a recharge 'window' into the Perth Basin aquifers, North Gnangara groundwater system, Western Australia.

    Science.gov (United States)

    Meredith, Karina; Cendón, Dioni I; Pigois, Jon-Philippe; Hollins, Suzanne; Jacobsen, Geraldine

    2012-01-01

    The Gnangara Mound and the underlying Perth Basin aquifers are the largest source of groundwater for the southwest of Australia, supplying between 35 and 50% of Perth's potable water (2009-2010). However, declining health of wetlands on the Mound coupled with the reduction in groundwater levels from increased irrigation demands and drier climatic conditions means this resource is experiencing increased pressures. The northern Gnangara is an area where the Yarragadee aquifer occurs at shallow depths (~50 m) and is in direct contact with the superficial aquifer, suggesting the possibility of direct recharge into a generally confined aquifer. Environmental isotopes ((14)C and (3)H) and hydrochemical modelling were used to assess the presence of a recharge 'window' as well as understand the groundwater residence time within different aquifers. Forty-nine groundwater samples were collected from depths ranging from 11 to 311 m below ground surface. The isotopic variation observed in the superficial aquifer was found to be controlled by the different lithologies present, i.e. quartz-rich Bassendean Sand and carbonate-rich sediments of the Ascot Formation. Rainfall recharge into the Bassendean Sand inherits its dissolved inorganic carbon from the soil CO(2). Organic matter throughout the soil profile is degraded by oxidation leading to anoxic/acidic groundwater, which if in contact with the Ascot Formation leads to enhanced dissolution of carbonates. Hydrochemical mass balance modelling showed that carbonate dissolution could contribute 1-2 mmol kg(-1) of carbon to groundwaters recharged through the Ascot Formation. The corrected groundwater residence times of the Yarragadee aquifer in the northern part of the study area ranged from 23 to 35 ka, while waters in the southeastern corner ranged from sub-modern to 2 ka. Groundwater ages increase with distance radiating from the recharge 'window'. This study delineates a recharge 'window' into the commonly presumed confined

  8. The use of environmental tracers to determine focused recharge from a saline disposal basin and irrigation channels in a semiarid environment in Southeastern Australia

    Science.gov (United States)

    Robson, T. C.; Webb, J. A.

    2016-07-01

    Lake Tutchewop in southeastern Australia is a former ephemeral wetland that has been used as a saline disposal basin since 1968, forming part of the salinity management of the Murray River. The extent of saline focused recharge from Lake Tutchewop and fresh recharge from nearby unlined irrigation channels was determined using pore water and groundwater stable isotope and major ion chemistry, which were able to separate the influence of lake water, irrigation water and regional groundwater. In ∼45 years, saline water from Lake Tutchewop has infiltrated only up to 165 m from the lake edge in most directions, due to the underlying relatively impermeable clay-rich sediments, and a maximum of 700 m due to preferential groundwater flow along a sandy palaeochannel. The saline leakage has had limited, if any, impact on surrounding agricultural land use. Fresh water leakage from unlined irrigation channels extends up to 10 m deep, validating the current program to replace these channels with pipelines. This study demonstrates that focused recharge from different sources can be positively identified where the recharge waters have distinctive compositions, and that underlying clay-rich sediments restrict the extent of seepage. Therefore, management of focused recharge sources, particularly those that could decrease groundwater quality, requires a detailed knowledge of both the groundwater composition around the site and the underlying geology.

  9. A Re-Examination of the Bedout High, Offshore Canning Basin, Western Australia - Possible Impact Site for the Permian-Triassic Mass Extinction Event?

    Science.gov (United States)

    Becker, L.; Nicholson, C.; Poreda, R. J.

    2002-12-01

    The Bedout High, located offshore Canning basin in Western Australia, is an unusual structure and its origin remains problematic. K-Ar dating of volcanic samples encountered at total depth in the Lagrange-1 exploration well indicated an age of about 253+/-5 Ma consistent with the Permian-Triassic boundary event. Gorter (PESA News, pp. 33-34, 1996) speculates that the Bedout High is the uplifted core (30 km) of a circular feature, some 220 km across, formed by the impact of a large bolide (cometary or asteroidal) with the Earth near the end-Permian. Accepting a possible impact origin for the Bedout structure, with the indicated dimensions, would have had profound effects on global climate as well as significant changes in lithotratigraphic, biostratigraphic and chemostratigraphic indicators as seen in several Permian-Triassic boundary locations worldwide. In this work, we re-examine some of the structural data previously presented by Gorter (1996) using some additional seismic lines. We have also evaluated several impact tracers including iridium, shocked quartz, productivity collapse, helium-3, chromium-53 and fullerenes with trapped noble gases from some Permian-Triassic boundary sites in the Tethys and Circum-Pacific regions. Our findings suggest that the Bedout structure is a good candidate for an oceanic impact at the end Permian, triggering the most severe mass extinction in the history of life on Earth.

  10. Geochemistry and hydrologic processes in the evolution of hypersaline brines at a ground water discharge area: Raak Plains, Murray Darling Basin, Australia

    International Nuclear Information System (INIS)

    It is now recognized that significant amounts of groundwater leakage from natural groundwater discharge zones has the potential to carry saline brine into down-gradient regional groundwaters. At Raak Plain, in the Murray Basin of south-eastern Australia, groundwater is discharged by evaporation through a complex system of wind-deflated playa lakes. Three methods are compared to determine the impact of the entire system on regional groundwater. A simple water balance, using chloride and stable isotope profiles to calculate recharge and discharge, is used to determine the amount of water leaving Raak Plain via the groundwater flow path. Large uncertainties, including large spatial variations in discharge and a high dependence on accurate recharge rate estimates, highlight the inadequacy of the simple model for the Raak Plain system. An evaporation/leakage model based on an oxygen-18 mass balance for a single salt lake also indicates large variations in leakage from individual salt lakes, further discrediting a simple model approach. Both methods do agree however that a large proportion of inflow is lost from the system and Cl/Br mass ratios across the site also indicate brine sinking

  11. Diagenesis and Fluid Flow History in Sandstones of the Upper Permian Black Jack Formation, Gunnedah Basin, Eastern Australia

    Institute of Scientific and Technical Information of China (English)

    BAI Guoping; John B. KEENE

    2007-01-01

    The fluid flow history during diagenesis of sandstones in the Upper Permian Black Jack Formation of the Gunnedah Basin has been investigated through integrated petrographic observations, fluid inclusion investigations and stable isotope analyses. The early precipitation of mixed-layer illite/smectite, siderite, calcite, ankerite and kaolin proceeded at the presence of Late Permian connate meteoric waters at temperatures of up to 60℃. These evolved connate pore waters were also parental to quartz, which formed at temperatures of up to 87℃. The phase of maximum burial was characterized by development of filamentous illite and late calcite at temperatures of up to ~90℃. Subsequent uplifting and cooling led to deep meteoric influx from surface, which in turn resulted in dissolution of labile grains and carbonate cements, and formation of second generation of kaolin. Dawsonite was the last diagenetic mineral precipitated and its formation is genetically related to deep-seated mamagtic sourced CO2.

  12. Addressing the Challenges of Diverse Knowledge Systems through Landscape Analysis: A Case Study in the Murray-Darling Basin, Australia

    Science.gov (United States)

    Lynch, A. H.; Griggs, D.; Joachim, L.; Heider, C.

    2014-12-01

    The Barmah-Millewa region of the Murray-Darling Basin is the heart of the Traditional Lands of the Yorta Yorta people. Management of water and ecosystem services in the region is governed by a wide array of sometimes inconsistent legislation and policies with differing rules, management focus and plans, and permitting and allocation procedures. Geographic information systems are a common framework for the integration of Indigenous knowledge and insights into natural resources management. But only with appropriate collection, management and database design protocols in place can geodatabase development and analysis support the effective and respectful participation of the Yorta Yorta community in management of this ecologically, economically and culturally important region. Here we describe the knowledge collection and protection protocols that were applied to develop the integrated geodatabase. We present approaches to generating meaningful guidance for water managers on the cultural implications of water allocation decisions.

  13. Using 14C and 3H to delineate a recharge ‘window’ into the Perth Basin aquifers, North Gnangara groundwater system, Western Australia

    International Nuclear Information System (INIS)

    The Gnangara Mound and the underlying Perth Basin aquifers are the largest source of groundwater for the southwest of Australia, supplying between 35 and 50% of Perth's potable water (2009–2010). However, declining health of wetlands on the Mound coupled with the reduction in groundwater levels from increased irrigation demands and drier climatic conditions means this resource is experiencing increased pressures. The northern Gnangara is an area where the Yarragadee aquifer occurs at shallow depths (∼ 50 m) and is in direct contact with the superficial aquifer, suggesting the possibility of direct recharge into a generally confined aquifer. Environmental isotopes (14C and 3H) and hydrochemical modelling were used to assess the presence of a recharge ‘window’ as well as understand the groundwater residence time within different aquifers. Forty-nine groundwater samples were collected from depths ranging from 11 to 311 m below ground surface. The isotopic variation observed in the superficial aquifer was found to be controlled by the different lithologies present, i.e. quartz-rich Bassendean Sand and carbonate-rich sediments of the Ascot Formation. Rainfall recharge into the Bassendean Sand inherits its dissolved inorganic carbon from the soil CO2. Organic matter throughout the soil profile is degraded by oxidation leading to anoxic/acidic groundwater, which if in contact with the Ascot Formation leads to enhanced dissolution of carbonates. Hydrochemical mass balance modelling showed that carbonate dissolution could contribute 1–2 mmol kg−1 of carbon to groundwaters recharged through the Ascot Formation. The corrected groundwater residence times of the Yarragadee aquifer in the northern part of the study area ranged from 23 to 35 ka, while waters in the southeastern corner ranged from sub-modern to 2 ka. Groundwater ages increase with distance radiating from the recharge ‘window’. This study delineates a recharge ‘window’ into the commonly presumed

  14. Using {sup 14}C and {sup 3}H to delineate a recharge 'window' into the Perth Basin aquifers, North Gnangara groundwater system, Western Australia

    Energy Technology Data Exchange (ETDEWEB)

    Meredith, Karina, E-mail: kmj@ansto.gov.au [Australian Nuclear Science and Technology Organisation, Institute for Environmental Research, Locked Bag 2001, Kirrawee DC, NSW 2232 (Australia); Cendon, Dioni I. [Australian Nuclear Science and Technology Organisation, Institute for Environmental Research, Locked Bag 2001, Kirrawee DC, NSW 2232 (Australia); Pigois, Jon-Philippe [Department of Water, PO Box K822 Perth WA 6842 (Australia); Hollins, Suzanne; Jacobsen, Geraldine [Australian Nuclear Science and Technology Organisation, Institute for Environmental Research, Locked Bag 2001, Kirrawee DC, NSW 2232 (Australia)

    2012-01-01

    The Gnangara Mound and the underlying Perth Basin aquifers are the largest source of groundwater for the southwest of Australia, supplying between 35 and 50% of Perth's potable water (2009-2010). However, declining health of wetlands on the Mound coupled with the reduction in groundwater levels from increased irrigation demands and drier climatic conditions means this resource is experiencing increased pressures. The northern Gnangara is an area where the Yarragadee aquifer occurs at shallow depths ({approx} 50 m) and is in direct contact with the superficial aquifer, suggesting the possibility of direct recharge into a generally confined aquifer. Environmental isotopes ({sup 14}C and {sup 3}H) and hydrochemical modelling were used to assess the presence of a recharge 'window' as well as understand the groundwater residence time within different aquifers. Forty-nine groundwater samples were collected from depths ranging from 11 to 311 m below ground surface. The isotopic variation observed in the superficial aquifer was found to be controlled by the different lithologies present, i.e. quartz-rich Bassendean Sand and carbonate-rich sediments of the Ascot Formation. Rainfall recharge into the Bassendean Sand inherits its dissolved inorganic carbon from the soil CO{sub 2}. Organic matter throughout the soil profile is degraded by oxidation leading to anoxic/acidic groundwater, which if in contact with the Ascot Formation leads to enhanced dissolution of carbonates. Hydrochemical mass balance modelling showed that carbonate dissolution could contribute 1-2 mmol kg{sup -1} of carbon to groundwaters recharged through the Ascot Formation. The corrected groundwater residence times of the Yarragadee aquifer in the northern part of the study area ranged from 23 to 35 ka, while waters in the southeastern corner ranged from sub-modern to 2 ka. Groundwater ages increase with distance radiating from the recharge 'window'. This study delineates a recharge

  15. Tectonic forces controlling the regional intraplate stress field in continental Australia: Results from new finite element modeling

    Science.gov (United States)

    Reynolds, Scott D.; Coblentz, David D.; Hillis, Richard R.

    2002-07-01

    The tectonic forces controlling the present-day regional intraplate stress field in continental Australia have been evaluated through a finite element analysis of the intraplate stresses in the Indo-Australian plate (IAP). Constraint for the modeling is provided by an observed regional stress field based on observations in 12 stress provinces. A weighted ``basis set'' method has been employed to provide an efficient means to evaluate a very large number of tectonic force combinations and to make a quantitative assessment of the fit between the observed and predicted stress fields. Our modeling results indicate that the major features of the regional stress field in continental Australia can be explained in terms of a geologically plausible array of tectonic forces. While the results continue to substantiate that modeling of the Australian intraplate stress field is inherently nonunique, we are nevertheless able to draw a number of fundamental conclusions about the tectonic settings along the principal plate boundary segments including the following: (1) The Himalayan and New Guinea boundaries exert a compressional force on the IAP. (2) Fitting the stress field in the Bowen Basin requires compressional boundary forces along the Solomon and New Hebrides subduction zones directed toward the interior of the IAP. (3) East-west compression in eastern Australia requires a small compressional force along the Tonga-Kermadec subduction zone. (4) Fitting the stress field in southeastern Australia requires compressional forces along the New Zealand, Puysegur Trench, and Macquarie Ridge boundary segments. (5) Significant tensional slab-pull forces exist only along the Java subduction zone.

  16. Bowen fluorescence from companion stars in x-ray Binaries

    Directory of Open Access Journals (Sweden)

    J. Casares

    2004-01-01

    Full Text Available Este art culo examina una nueva t ecnica para detectar estrellas compa~neras en los LMXB y las transitorias de rayos X durante la transferencia de masa utilizando las l neas NIII uorescentes de Bowen en 4634-4640. Estas l neas se reprocesan muy e cientemente en las atm osferas de las estrellas compa~neras proporcionando estimaciones de las velocidades K2 y funciones de masas. Este m etodo se aplic o a Sco X-1, X 822-371 y GB339-4 el cual, en este ultimo caso, proporciona una evidencia din amica de la presencia de un agujero negro acreciente. Tambi en se presentan resultados preliminares de una campa~na VLT sobre V801 Ara, V926 Sco y XTE J1814-338.

  17. Combined Papillated Bowen Disease and Clear Cell Atypical Fibroxanthoma

    Directory of Open Access Journals (Sweden)

    Dimas Suárez-Vilela

    2010-05-01

    Full Text Available We describe a case of papillated Bowen disease (PBD, associated with a clear cell atypical fibroxanthoma (CCAFXA. The epidermal lesion showed a bowenoid papillomatous growth pattern with histologic features suggestive of infection by human papilloma virus (HPV. In the dermis a neoplasm made up by spindled or polygonal cells with wide clear cytoplasm and moderate nuclear pleomorphism was found. Immunohistochemical characteristics of these two lesions were clearly different. The atypical cells of the intraepidermal proliferation were positive for AE1-AE3 anticytokeratin antibody, EMA, p16, p53 and p63. The dermal tumor was positive for vimentin, CD10, CD68, CD99, alpha-1-antitrypsin and c-kit. Histological features and immunohistochemical profile of the dermal tumor corresponded to a CCAFXA, a very uncommon neoplasm of which only 10 cases have been reported. In situ hybridization for numerous types of HPVs was negative in both lesions.

  18. Thermodynamic and multifractal formalism and the Bowen-series map

    International Nuclear Information System (INIS)

    In the theory of quantum chaos one studies the semiclassical behaviour of quantum mechanical systems whose corresponding classical counterparts exhibit chaos. These systems are sometimes considered as model systems in the theory of quantum chaos since they are well understood from a mathematical point of view. In this work we study the multifractal formalism for the geodesic flow on surfaces with constant negative curvature. The multifractal analysis of measures has been developed in order to characterize the scaling behaviour of measures on attractors of classical chaotic dynamical systems globally. In order to relate the multifractal formalism with quantities usually considered in the study of the geodesic flow on Riemann surfaces with constant negative curvature, it is necessary to establish the assertions of the multifractal formalism in a mathematically rigorous way. This is achieved with the help of the thermodynamic formalism for hyperbolic dynamical systems developed by Ruelle, Bowen and others. (orig.)

  19. Morphologies and depositional/erosional controls on evolution of Pliocene-Pleistocene carbonate platforms: Northern Carnarvon Basin, Northwest Shelf of Australia

    Science.gov (United States)

    Goktas, P.; Austin, J. A.; Fulthorpe, C. S.; Gallagher, S. J.

    2016-08-01

    The detailed morphologies, evolution and termination of latest Neogene tropical carbonate platforms in the Northern Carnarvon Basin (NCB), on the passive margin of the Northwest Shelf (NWS) of Australia, defined based upon mapping using 3D seismic images, reveal the history of local/regional oceanographic processes, fluctuations in relative sea-level and changing climate. Cool-water carbonate deposition, dominant during the early-middle Miocene, was followed by a siliciclastic influx, which prograded across the NWS beginning in the late-middle Miocene, during a period of long-term global sea-level fall. The resulting prograding clinoform sets, interpreted as delta lobes, created relict topographic highs following Pliocene termination of the siliciclastic influx. These highs constituted multiple favorable shallow-water environments for subsequent photozoan carbonate production. Resultant platform carbonate development, in addition to being a response to cessation of siliciclastic influx and the existence of suitable shallow-water substrate, was also influenced by development of the warm-water Leeuwin Current (LC), flowing southwestward along this margin. Four flat-topped platforms are mapped; each platform top is a sequence boundary defined by reflection onlap above and truncation below. Successive platforms migrated southwestward through time, along margin strike. All platforms exhibit predominantly progradational seismic geometries. Mapped tops are ≥10 km wide. Seismic evidence of karst on three of four platform tops, e.g., v-shaped troughs up to 50 m deep and ~1 km wide, and broader basins with areas up to 20 km2, suggests episodic subaerial exposure that may have contributed to platform demise. Platform 4, the most recent, is unique in having interpreted biohermal build-ups superimposed on the progradational platform base. The base of these interpreted patch reefs now lies at a water depth of ~153 m; therefore, we suggest that these reefs developed post

  20. Rare earth element geochemistry of Late Devonian reefal carbonates, Canning Basin, Western Australia: confirmation of a seawater REE proxy in ancient limestones

    Science.gov (United States)

    Nothdurft, Luke D.; Webb, Gregory E.; Kamber, Balz S.

    2004-01-01

    Rare earth element and yttrium (REE+Y) concentrations were determined in 49 Late Devonian reefal carbonates from the Lennard Shelf, Canning Basin, Western Australia. Shale-normalized (SN) REE+Y patterns of the Late Devonian samples display features consistent with the geochemistry of well-oxygenated, shallow seawater. A variety of different ancient limestone components, including microbialites, some skeletal carbonates (stromatoporoids), and cements, record seawater-like REE+Y signatures. Contamination associated with phosphate, Fe-oxides and shale was tested quantitatively, and can be discounted as the source of the REE+Y patterns. Co-occurring carbonate components that presumably precipitated from the same seawater have different relative REE concentrations, but consistent REE+Y patterns. Clean Devonian early marine cements ( n = 3) display REE+Y signatures most like that of modern open ocean seawater and the highest Y/Ho ratios (e.g., 59) and greatest light REE (LREE) depletion (average Nd SN/Yb SN = 0.413, SD = 0.076). However, synsedimentary cements have the lowest REE concentrations (e.g., 405 ppb). Non-contaminated Devonian microbialite samples containing a mixture of the calcimicrobe Renalcis and micritic thrombolite aggregates in early marine cement ( n = 11) have the highest relative REE concentrations of tested carbonates (average total REE = 11.3 ppm). Stromatoporoid skeletons, unlike modern corals, algae and molluscs, also contain well-developed, seawater-like REE patterns. Samples from an estuarine fringing reef have very different REE+Y patterns with LREE enrichment (Nd SN/Yb SN > 1), possibly reflecting inclusion of estuarine colloidal material that contained preferentially scavenged LREE from a nearby riverine input source. Hence, Devonian limestones provide a proxy for marine REE geochemistry and allow the differentiation of co-occurring water masses on the ancient Lennard Shelf. Although appropriate partition coefficients for quantification of

  1. Sequence development of a latest Devonian-Tournaisian distally-steepened mixed carbonate-siliciclastic ramp, Canning Basin, Australia

    Science.gov (United States)

    Seyedmehdi, Zahra; George, Annette D.; Tucker, Maurice E.

    2016-03-01

    The sequence development and evolution of latest Devonian-earliest Carboniferous Fairfield Group in the Canning Basin have been established through integration of detailed sedimentological analysis of core, petrophysical data, existing biostratigraphic data and new seismic interpretations. The Fairfield Group on the Lennard Shelf was deposited on a mixed carbonate-siliciclastic distally-steepened ramp with a broad inner ramp, narrow mid ramp and steepened outer ramp. The majority of facies associations (FA1-FA8) were formed in intertidal-shallow subtidal conditions in proximal to distal inner ramp including siliciclastic tidal flats (FA1), carbonate intertidal flats (FA2), tidal flats and channels (FA3), lagoons (FA4-FA5), and shallow subtidal (FA6), backshoal (FA7) and fore-shoal areas (FA8). Bioclastic muddy sandstone (FA9) and bioclastic mudstone (FA10) are the dominant mid-ramp facies. Recognition of turbiditic facies of middle to lower slope of the outer ramp (FA11-FA13) led to the identification of a distally-steepened ramp. Antecedent topography exerted a significant control on platform morphology and the development of the widespread inner-ramp facies on the Lennard Shelf. A sequence-stratigraphic analysis reveals that the Fairfield Group ramp deposits consists of four third-order sequences (S1-S4) that were largely deposited during sea-level highstands (HST) characterized by progradational trends and dominant shallow subtidal inner-ramp facies associations. Transgressive systems tracts (TST) are well developed in S1 and S3 and have a retrogradational facies pattern with dominant deep subtidal mid-outer ramp facies associations. Lowstand systems tracts, characterized by lowstand wedges and turbiditic facies, are identified in the lower parts of S2 and S3. Coarse and fine-grained siliciclastic facies are mixed with carbonate facies as a result of coeval deposition on the inner and mid ramp, and reciprocal deposition on the outer ramp. A temporal variation in

  2. A paleoclimate rainfall reconstruction in the Murray-Darling Basin (MDB), Australia: 2. Assessing hydroclimatic risk using paleoclimate records of wet and dry epochs

    Science.gov (United States)

    Ho, Michelle; Kiem, Anthony S.; Verdon-Kidd, Danielle C.

    2015-10-01

    Estimates of hydrological risk are crucial to enable adequate planning and preparation for extreme events. However, the accurate estimation of hydrological risk is hampered by relatively short instrumental records in many parts of the world. Information derived from climate-sensitive paleoclimate proxies provide an opportunity to resolve hydroclimatic variability, but many regions, such as Australia's Murray-Darling Basin (MDB), currently lack the suitable in situ proxies necessary to do this. Here new MDB rainfall reconstructions are presented based on a novel method using paleoclimate rainfall proxies in the Australasian region spanning from 749 B.C.E. to 1980 C.E. Our results emphasize the need to develop additional reconstructions and, with the companion paper, demonstrate how this information can be used to benefit water resource management. This study shows that prior to the twentieth century, both dry and wet epochs have persisted for longer periods than observed in the instrumental record—with the probability of both dry and wet periods exceeding a decade at least 10 times more likely prior to 1883 than suggested by the instrumental records. Some reconstructed rainfalls exceeded the instrumental range (i.e., drier dry epochs and wetter wet spells) despite a systematic underestimation of extremes due to a combination of proxy quality and model bias. Importantly, the results demonstrate that the instrumental record does not cover the full range of hydroclimatic variability possible in the MDB. Therefore, hydroclimatic risk assessments based on the instrumental record likely underestimate, or at least misinterpret, the frequency, duration, and magnitude of wet and dry epochs.

  3. Understanding the role of farm dams in the Murray-Darling Basin in Australia through hydrological analysis coupled with stakeholder interviews

    Science.gov (United States)

    Kuil, Linda; Winnubst, Madelinde; van Dijk, Albert

    2013-04-01

    Climate predictions suggest that surface water availability in the Murray-Darling Basin (MDB) in Australia is more likely to decline than to increase in the next decades. In 2000, farm dams were first recognized as a significant risk to future flows in the MDB and have since been the subject of hydrological research. This study was conducted to provide insight into the role of farm dams in the Yass catchment, which is a subcatchment of the MDB close to Canberra, in order to indentify obstacles for integrated water management. The role of farm dams was investigated from both a hydrological and social perspective. Model prediction and data inference were used to estimate the impact of farm dams on streamflow. The density of farm dams in the catchment was estimated at 5.7 dams km-2. The impact on the Yass River was simulated to be in the order of 20 percent of mean annual streamflow. To understand why farm dams are used, semi-structured interviews were conducted to capture views and opinions of land holders. Research found that farm dams play a very important role in terms of individuals' water supply, although other systems are also used. Furthermore, land holders are responsible for their own water supply for drinking and agricultural water needs. Water rights are based on a right to rainfall or groundwater that is present on an individual's property. This means that landholders have both a need and a right to collect and store runoff. Current legislation put in place by the New South Wales government to restrict the amount of rain water to be captured does not seem to affect most people. If additional policy to minimize the impact of farm dams on streamflow were to be introduced, this has to be based on well-thought-out arguments based on a long term vision as the interview results indicate that farm dams are deeply embedded in Australian rural culture.

  4. Socio-hydrologic Modeling to Understand and Mediate the Competition for Water between Humans and Ecosystems: Murrumbidgee River Basin, Australia (Invited)

    Science.gov (United States)

    Sivapalan, M.

    2013-12-01

    Competition for water between humans and ecosystems is set to become a flash point in coming decades in all parts of the world. An entirely new and comprehensive quantitative framework is needed to establish a holistic understanding of that competition, thereby enabling development of effective mediation strategies. This paper presents a case study centered on the Murrumbidgee river basin in eastern Australia that illustrates the dynamics of the balance between water extraction and use for food production and efforts to mitigate and reverse consequent degradation of the riparian environment. Interactions between patterns of water management and climate driven hydrological variability within the prevailing socio-economic environment have contributed to the emergence of new whole system dynamics over the last 100 years. In particular, data analysis reveals a pendulum swing between an exclusive focus on agricultural development and food production in the initial stages of water resource development and its attendant socio-economic benefits, followed by the gradual realization of the adverse environmental impacts, efforts to mitigate these with the use of remedial measures, and ultimately concerted efforts and externally imposed solutions to restore environmental health and ecosystem services. A quasi-distributed coupled socio-hydrologic system model that explicitly includes the two-way coupling between human and hydrological systems, including evolution of human values/norms relating to water and the environment, is able to mimic broad features of this pendulum swing. The model consists of coupled nonlinear differential equations that include four state variables describing the co-evolution of storage capacity, irrigated area, human population, and ecosystem health. The model is used to generate insights into the dominant controls of the trajectory of co-evolution of the coupled human-water system, to serve as the theoretical framework for more detailed analysis of

  5. Quantifying water requirements of riparian river red gum (Eucalyptus camaldulensis) in the Murray-Darling Basin, Australia: Implications for the management of environmental flows

    Science.gov (United States)

    Doody, Tanya M.; Colloff, Matthew J.; Davies, Micah; Koul, Vijay; Benyon, Richard G.; Nagler, Pamela L.

    2015-01-01

    Water resource development and drought have altered river flow regimes, increasing average flood return intervals across floodplains in the Murray-Darling Basin, Australia, causing health declines in riparian river red gum (Eucalyptus camaldulensis) forests and woodlands. Environmental flow allocations helped to alleviate water stress during the recent Millennium Drought (1997–2010), however, quantification of the flood frequency required to support healthy E. camaldulensis communities is still needed. We quantified water requirements of E. camaldulensis for two years across a flood gradient (trees inundated at frequencies of 1:2, 1:5 and 1:10 years) at Yanga National Park, New South Wales to help inform management decision-making and design of environmental flows. Sap flow, evaporative losses and soil moisture measurements were used to determine transpiration, evapotranspiration and plant-available soil water before and after flooding. A formula was developed using plant-available soil water post-flooding and average annual rainfall, to estimate maintenance time of soil water reserves in each flood frequency zone. Results indicated that soil water reserves could sustain 1:2 and 1:5 trees for 15 months and six years, respectively. Trees regulated their transpiration rates, allowing them to persist within their flood frequency zone, and showed reduction in active sapwood area and transpiration rates when flood frequencies exceeded 1:2 years. A leaf area index of 0.5 was identified as a potential threshold indicator of severe drought stress. Our results suggest environmental water managers may have greater flexibility to adaptively manage floodplains in order to sustain E. camaldulensis forests and woodlands than has been appreciated hitherto.

  6. Fervidicola ferrireducens gen. nov., sp. nov., a thermophilic anaerobic bacterium from geothermal waters of the Great Artesian Basin, Australia.

    Science.gov (United States)

    Ogg, Christopher D; Patel, Bharat K C

    2009-05-01

    A strictly anaerobic, thermophilic bacterium, designated strain Y170(T), was isolated from a microbial mat colonizing thermal waters of a run-off channel created by the free-flowing waters of a Great Artesian Basin (GAB) bore well (New Lorne bore; registered number 17263). Cells of strain Y170(T) were slightly curved rods (1.2-12x0.8-1.1 mum) and stained Gram-negative. The strain grew optimally in tryptone-yeast extract-glucose medium at 70 degrees C (temperature range for growth was 55-80 degrees C) and pH 7 (pH range for growth was 5-9). Strain Y170(T) grew poorly on yeast extract as a sole carbon source, but not on tryptone (0.2 %). Yeast extract could not be replaced by tryptone and was obligately required for growth on tryptone, peptone, glucose, fructose, galactose, cellobiose, mannose, sucrose, xylose, mannitol, formate, pyruvate, Casamino acids and threonine. No growth was observed on arabinose, lactose, maltose, raffinose, chitin, xylan, pectin, starch, acetate, benzoate, lactate, propionate, succinate, myo-inositol, ethanol, glycerol, amyl media, aspartate, leucine, glutamate, alanine, arginine, serine and glycine. End products detected from glucose fermentation were acetate, ethanol and presumably CO(2) and H(2). Iron(III), manganese(IV), thiosulfate and elemental sulfur, but not sulfate, sulfite, nitrate or nitrite, were used as electron acceptors in the presence of 0.2 % yeast extract. Iron(III) in the form of amorphous Fe(III) oxhydroxide and Fe(III) citrate was also reduced in the presence of tryptone, peptone and Casamino acids, but not with chitin, xylan, pectin, formate, starch, pyruvate, acetate, benzoate, threonine, lactate, propionate, succinate, inositol, ethanol, glycerol, mannitol, aspartate, leucine, glutamate, alanine, arginine, serine or glycine. Strain Y170(T) was not able to utilize molecular hydrogen and/or carbon dioxide in the presence or absence of iron(III). Chloramphenicol, streptomycin, tetracycline, penicillin and ampicillin and

  7. Multicentric pigmented Bowen's disease of the genitalia associated with carcinoma in situ of the cervix.

    OpenAIRE

    King, C. M.; Yates, V. M.; Dave, V K

    1984-01-01

    A case of multicentric pigmented Bowen's disease in a 45 year old woman with a previous history of carcinoma of the cervix is described. The two conditions may have a common pathogenesis, and a preceding viral infection with herpes simplex or human papillomavirus could be of aetiological relevance. Patients with multicentric pigmented Bowen's disease may be at risk of developing other tumours of the genital tract. Treatment with carbon dioxide laser proved effective.

  8. A case of Bowen’s disease responding well to radiotherapy

    OpenAIRE

    Goknur Kalkan; Gunseli Sefika Pancar

    2013-01-01

    Bowen’s disease is a form of intraepidermal squamous cell carcinoma which is known as carsinoma in situ. The head, neck, and extremities are the most commonly affected anatomic locations. Treatment options for Bowen’s disease include observation, surgery, cryotherapy, electrodesiccation and curettage, topical application of 5-fluorouracil or imiquimod, Moh’s micrographic surgery, photodynamic therapy, and radiotherapy. Radiation therapy is advantageous in patients who refuse su...

  9. Scaling, kinematics and evolution of a polymodal fault system: Hail Creek Mine, NE Australia

    Science.gov (United States)

    Carvell, Jacob; Blenkinsop, Thomas; Clarke, Gavin; Tonelli, Maurizio

    2014-09-01

    We analyse a system of normal faults that cuts sandstone, siltstone, mudstone, coal, and tuff at Hail Creek Coal Mine in the Bowen Basin, NE Australia. Our detailed mapping utilised the dense borehole network and strip mining operations. The fault surfaces have complex geometries, yet the components of the individual faults show similar orientation variability to the whole fault system. The faults and their components dip to the SE, NW, NNW, and SSE with an orthorhombic symmetry that we refer to as polymodal. There are multiple displacement peaks, with complementary changes on adjacent faults. This observation suggests kinematic coherence between neighbouring faults. Twin displacement peaks on some faults suggest that segment linkage occurred on a scale of hundreds of m. These polymodal faults follow the same displacement-length scaling laws as other normal faults. Fault dip is affected by lithology, with steeper dips in more competent (sandstone) beds. An ‘odd-axis’ construction using whole fault planes suggests that they formed in a triaxial strain state (three different principal strains) with vertical shortening, and horizontal extension along principal directions of 148° and 058°. Odd-axis constructions using individual fault components, as opposed to whole faults, give similar principal strain orientations and maximum strain ratios. The variable component orientations, and the consistency of fault kinematics on different scales, suggest that the faults evolved by the propagation or linkage of smaller components with variable orientations, within the same bulk strain state.

  10. The Bowen-Fenner Debate Revisited: A Review of Basalt Crystal Fractionation and the Generation of Andesite

    Science.gov (United States)

    Conrey, R. M.

    2002-12-01

    The Bowen-Fenner debate over the nature of basalt crystal fractionation is still unresolved. Bowen's classic 1928 book detailed his basalt-andesite-rhyolite fractionation scheme, whereas Fenner emphasized the evidence for Fe-enrichment during most basalt crystallization, thus anticipating discovery of the Skaergaard. In the 1940's Bowen suggested only wet basalt generates common andesite. To address this debate MELTS simulations were performed with near-constant parents but varied water contents from 0-4 wt per cent. For comparison, data were compiled from mid-ocean ridge (MORB), back-arc basin (BABB), and arc basalts. There is a strong correlation between empirical fractionation patterns and the simulations. Dry basaltic magma exemplified by MORB shows fractionation patterns controlled by early plagioclase crystallization, whereas nearly all wet arc basaltic magmas have patterns controlled by crystallization of mafic minerals, with the later onset of highly calcic plagioclase. BABB have fractionation patterns between those two extremes. The fundamental antithetic behavior of Al and Fe during basalt crystal fractionation due to the sensitive control over plagioclase crystallization by water is completely obscured by the use of Harker and AFM diagrams. Mafic arc basalts which show evidence for significant crystallization of magnetite are largely lacking - most arc basalt fractionation patterns are consistent with 2-3 per cent H2O in the primitive melt and oxygen fugacity near the NNO buffer. A few mafic arc volcanoes have steep increases in Al content or slightly declining Fe content with only slight increases in FeO*/MgO suggestive of significant magnetite crystallization. Magma at these centers must be somewhat more hydrous and/or oxidized than is the normal case. Arc basalt clinopyroxene compositions support the inference that common high-alumina basalt (HAB) is a derivative magma, as empirical and experimental data, and MELTS simulations, all show coupled

  11. Origin and time-space distribution of hydrothermal systems in east-central Australian sedimentary basins: Constraints from illite geochronology and isotope geochemistry.

    Science.gov (United States)

    Uysal, I. Tonguç

    2016-04-01

    Some well-known precious mineral deposits and hydrocarbon resources occur extensively in east-central Australian sedimentary Basins. The metal occurrences are abundant in northwestern and eastern part of Queensland, whereas no significant deposits are known in large areas further south, which may, however, be hidden beneath the Jurassic-Cretaceous sedimentary basins. Important hydrocarbon resources exist within the Jurassic-Cretaceous sedimentary rocks at relatively shallow depths, of which the distribution represent zones of high paleo-geothermal gradients. This study examines the time-space distribution in relation to the regional tectonic history of concealed metal deposits and areas of high paleo-geothermal gradient leading to hydrocarbon maturation. To this end, authigenic illitic clay minerals representing various locations and stratigraphic depths in east-central Australia were investigated, of which the Rb-Sr and Ar-Ar geochronology and stable isotope geochemistry assist in delineating zones of hydrothermal systems responsible for hydro-carbon maturation/migration and potentially ore deposition. The Late Carboniferous - Early Permian crustal extension that affected large areas of eastern Australia and led to the epithermal mineralisations (e.g., the Drummond Basin) is also recorded in northern South Australia and southwest Queensland. A Late Triassic - Early Jurassic tectonic event being responsible for coal maturation and gas generation in the Bowen Basin and the epithermal mineralisation in the North Arm goldfield in SE Queensland likewise affected the areas much further west in Queensland. Some illites from the basement in outback Queensland and fault gouges from the Demon Fault in NE New South Wales yield younger Rb-Sr and Ar-Ar ages indicating the effect of hydrothermal processes as a result of a Middle-Upper Jurassic tectonic event. The majority of illite samples from the crystalline basement rocks, Permian Cooper Basin, and Jurassic

  12. A new method to measure Bowen ratios using high-resolution vertical dry and wet bulb temperature profiles

    OpenAIRE

    Euser, T.; Luxemburg, W. M. J.; C. S. Everson; Mengistu, M.G.; Clulow, A. D.; W. G. M. Bastiaanssen

    2014-01-01

    The Bowen ratio surface energy balance method is a relatively simple method to determine the latent heat flux and the actual land surface evaporation. The Bowen ratio method is based on the measurement of air temperature and vapour pressure gradients. If these measurements are performed at only two heights, correctness of data becomes critical. In this paper we present the concept of a new measurement method to estimate the Bowen ratio based on vertical dry and wet bulb temp...

  13. Permian U-Pb (CA-TIMS) zircon ages from Australia and China: Constraining the time scale of environmental and biotic change

    Science.gov (United States)

    Denyszyn, S. W.; Mundil, R.; Metcalfe, I.; He, B.

    2010-12-01

    In eastern Australia, the interconnected Bowen and Sydney Basins are filled with terrestrial sediments of late Paleozoic to early Mesozoic age. These sedimentary units record significant evolutionary events of eastern Gondwana during the time interval between two major mass extinctions (end Middle Permian and Permian-Triassic), and also provide lithological evidence for the Carboniferous-Permian Late Paleozoic Ice Age of southern Pangea, considered to be divisible into up to seven discrete glaciation events in Australia [e.g., 1]. These glaciations are currently assigned ages that indicate that the last of the glaciations predate the end Middle Permian mass extinction at ca. 260 Ma. However, the estimates for the time and durations are largely based on biostratigraphy and lithostratigraphy that, in the absence of robust and precise radioisotopic ages, are unacceptably fragile for providing an accurate high-resolution framework. Interbedded with the sediments are numerous tuff layers that contain zircon, many of which are associated with extensive coal measures in the Sydney and Bowen Basins. Published SHRIMP U-Pb zircon ages [2, 3] have been shown to be less precise and inaccurate when compared to ages applying the CA-TIMS method to the same horizons. Also within the late Middle Permian, the eruption of the Emeishan flood basalts in SW China has been proposed to have caused the end Middle Permian mass extinction [e.g., 4], though a causal link between these events demands a rigorous test that can only be provided by high-resolution geochronology. We present new U-Pb (CA-TIMS) zircon ages on tuff layers from the Sydney and Bowen Basins, with the purpose of generating a timescale for the Upper Permian of Australia to allow correlation with different parts of the world. Initial results, with permil precision, date a tuff layer within the uppermost Bandanna Fm. to ca. 252 Ma, a tuff within the Moranbah Coal Measures to ca. 256 Ma, and a tuff within the Ingelara Fm. to

  14. A new method to measure bowen ratios using high resolution vertical dry and wet bulb temperature profiles

    NARCIS (Netherlands)

    Euser, T.; Luxemburg, W.; Everson, C.; Mengistu, M.; Clulow, A.; Bastiaanssen, W.

    2013-01-01

    The Bowen ratio surface energy balance method is a relatively simple method to determine the latent heat flux and the actual land surface evaporation. Despite its simplicity, the Bowen ratio method is generally considered to be unreliable due to the use of two-level sensors that are installed by def

  15. A new method to measure Bowen ratios using high-resolution vertical dry and wet bulb temperature profiles

    NARCIS (Netherlands)

    Euser, T.; Luxemburg, W.M.J.; Everson, C.S.; Mengistu, M.G.; Clulow, A.D.; Bastiaanssen, W.G.M.

    2014-01-01

    The Bowen ratio surface energy balance method is a relatively simple method to determine the latent heat flux and the actual land surface evaporation. The Bowen ratio method is based on the measurement of air temperature and vapour pressure gradients. If these measurements are performed at only two

  16. Bowenoid Papulosis of the Vulva and Subsequent Periungual Bowen's Disease Induced by the Same Mucosal HPVs

    OpenAIRE

    Shim, Woo-Haing; Park, Hyun-Je; Kim, Hoon-Soo; Kim, Su-Han; Jung, Do-Sang; Ko, Hyun-Chang; Kim, Byung-Soo; Kim, Moon-Bum; Kwon, Kyung-Sool

    2011-01-01

    We report the case of a 23-year-old woman who developed bowenoid papulosis of the vulva and subsequent periungual Bowen's disease. She had a history of a long standing periungual wart on her right thumb before the outbreak of periungual Bowen's disease. By HPV DNA chip, human papillomavirus (HPV) 11, 18 and 31 were identified from the periungual lesions, and HPV 11, 18 and 33 from the vulvar lesion. This case supports the theory of anogenital-digital spread of HPV, and proposes that the periu...

  17. Structural evolution of the early Permian Nambucca Block (New England Orogen, eastern Australia) and implications for oroclinal bending

    Science.gov (United States)

    Shaanan, Uri; Rosenbaum, Gideon; Li, Pengfei; Vasconcelos, Paulo

    2014-07-01

    The Paleozoic to early Mesozoic southern New England Orogen of eastern Australia exhibits a remarkable ear-shaped curvature (orocline), but the geodynamic processes responsible for its formation are unclear. Oroclinal bending took place during the early Permian, simultaneously with the deposition of the rift-related Sydney, Gunnedah, and Bowen basins, which bound the oroclines to the west. The Nambucca Block is another early Permian rift basin, but it is situated in the core of the oroclinal structure. Here we present new stratigraphic, structural, and geochronological data from the Nambucca Block in an attempt to better understand its tectonic history and relationships to the formation of the oroclines. We recognized four phases of folding and associated structural fabrics (S1-4), with the second phase (S2) dated at 275-265 Ma by 40Ar/39Ar geochronology of muscovite. This age overlaps with independent constraints on the timing of oroclinal bending, suggesting that the earlier two phases of deformation in the Nambucca Block (F1 and F2) were associated with orocline formation. We propose that oroclinal bending involved three major stages. The first stage (basins in a hot extensional back-arc setting. This was followed by a second stage of oroclinal bending, possibly linked to dextral wrench faulting, which involved ~ N-S contraction (F1). Subsequent deformation at 275-265 Ma involved formation of nappe-style structures (F2). This phase of contractional deformation may have resulted from an increased plate coupling that was possibly linked to flat-slab subduction.

  18. Low-temperature thermochronology of the northern Thomson Orogen: Implications for exhumation of basement rocks in NE Australia

    Science.gov (United States)

    Verdel, Charles; Stockli, Daniel; Purdy, David

    2016-01-01

    The Tasmanides of eastern Australia record much of the Phanerozoic tectonic development of the retreating Pacific-Australia plate boundary and are an oft-cited example of an orogen that has undergone "tectonic mode switching." To begin to constrain the timing of exhumation of basement rocks that are now exposed in portions of the NE Tasmanides, we measured apatite and zircon (U-Th)/He ages from the Thomson Orogen and overlying Paleozoic strata in the back-arc of the New England Orogen in NE Australia. Zircon (U-Th)/He ages from basement samples (including those recovered from boreholes at depths of up to 1.1 km) are characterized by large inter- and intra-sample variability and range from approximately 180 Ma (Early Jurassic) to 375 Ma (Late Devonian). (U-Th)/He zircon ages from several individual samples are negatively correlated with effective uranium (eU), a pattern that is also true of the dataset as a whole, suggesting that variations in U and Th zoning and radiation damage are partially responsible for the age variability. The oldest zircon (U-Th)/He cooling ages coincide with the formation of regionally extensive Late Devonian-early Carboniferous back-arc basins, suggesting that Late Devonian extension played a significant role in exhumation of parts of the northern Thomson Orogen. Apatite (U-Th)/He ages from a basement sample and a late Permian sandstone in the overlying Bowen Basin, which are also marked by intra-sample variability and age-eU correlations, span from the Early Cretaceous through Oligocene, in general agreement with previous apatite fission track data. In conjunction with observations of key geologic relationships and prior K-Ar and 40Ar/39Ar data, our results suggest four overall phases in the thermal history of the northern Thomson Orogen: (1) Cambrian-early Silurian metamorphism during the Delamerian and Benambran Orogenies; (2) protracted cooling during the Late Devonian through mid-Permian that likely resulted from extensional

  19. FUSE - Australia

    Science.gov (United States)

    South Australian Science Teachers Journal, 1974

    1974-01-01

    Announces the establishment of a division of FUSE in Australia, at Sturt College of Advanced Education, for the purpose of disseminating the concept of unified science and to facilitate the development of unified science programs. (BR)

  20. Structural inversion of the Tamworth Belt: Insights into the development of orogenic curvature in the southern New England Orogen, Australia

    Science.gov (United States)

    Phillips, G.; Robinson, J.; Glen, R.; Roberts, J.

    2016-05-01

    The middle to late Permian Hunter Bowen Event is credited with the development of orogenic curvature in the southern New England Orogen, yet contention surrounds the structural dynamics responsible for the development of this curvature. Debate is largely centred on the roles of orogen parallel strike-slip and orogen normal extension and contraction to explain the development of curvature. To evaluate the dynamic history of the Hunter Bowen Event, we present new kinematic reconstructions of the Tamworth Belt. The Tamworth Belt formed as a Carboniferous forearc basin and was subsequently inverted during the Hunter Bowen Event. Kinematic reconstructions of the Tamworth Belt are based on new maps and cross-sections built from a synthesis of best-available mapping, chronostratigraphic data and new interpretations of depth-converted seismic data. The following conclusions are made from our study: (i) the Hunter Bowen Event was dominantly driven by margin normal contraction (east-west shortening; present-day coordinates), and; (ii) variations in structural style along the strike of the Tamworth Belt can be explained by orthogonal vs. oblique inversion, which reflects the angular relationship between the principal shortening vector and continental-arc margin. Given these conclusions, we suggest that curvature around the controversial Manning Bend was influenced by the presence of primary curvature in the continental margin, and that the Hastings Block was translated along a sinistral strike-slip fault system that formed along this oblique (with respect to the regional east-west extension and convergence direction) part of the margin. Given the available temporal data, the translation of the Hastings Block took place in the Early Permian (Asselian) and therefore preceded the Hunter Bowen Event. Accordingly, we suggest that the Hunter Bowen Event was dominantly associated with enhancing curvature that was either primary in origin, or associated with fault block translation

  1. Play, Healing, and Wellness as Seen by a Physician Who Clowns: An Interview with Bowen White

    Science.gov (United States)

    American Journal of Play, 2009

    2009-01-01

    Bowen White is a physician. He founded the Department of Preventive and Stress Medicine at the Baptist Medical Center in Kansas City, Missouri, in 1983 and later established the center's Department of Wellness and Health Promotion. White is also a clown who goes by the name of Dr. Jerko. For years he mixed these dual interests, skills, and egos…

  2. A case of Bowen’s disease responding well to radiotherapy

    Directory of Open Access Journals (Sweden)

    Goknur Kalkan

    2013-08-01

    Full Text Available Bowen’s disease is a form of intraepidermal squamous cell carcinoma which is known as carsinoma in situ. The head, neck, and extremities are the most commonly affected anatomic locations. Treatment options for Bowen’s disease include observation, surgery, cryotherapy, electrodesiccation and curettage, topical application of 5-fluorouracil or imiquimod, Moh’s micrographic surgery, photodynamic therapy, and radiotherapy. Radiation therapy is advantageous in patients who refuse surgery, for large or multiple lesions, for lesions in cosmetically sensitive areas, and in patients who are predisposed to formation of keloids, with a high cure rate cited in the literature. Here we report a 70-year-old man who was diagnosed as Bowen’s disease and completely healed with the treatment of radiotherapy. By means of this case report, we will review the current literature and empasize that radiotherapy is an effective treatment alternative for Bowen's disease in the suitable lesions. [Cukurova Med J 2013; 38(4.000: 813-817

  3. Cytokeratin 17 immunoexpression in actinic keratosis (bowenoid and nonbowenoid) and in Bowen disease.

    Science.gov (United States)

    Fernandez-Flores, Angel

    2016-02-01

    Cytokeratin (CK) 17 immunoexpression has been investigated in nonmelanoma skin cancer as well as in many preinvasive epithelial malignancies. However, there is not any previous study of CK17 immunoexpression in actinic keratosis (AK) or Bowen disease in nonimmunocompromised patients. We evaluated CK17 immunoexpression in 20 cases of AK (10 nonbowenoid and 10 bowenoid) as well as in 10 cases of Bowen disease. We identified expression of CK17 in the superficial layers above the atypical foci. In some cases, there were foci of expression by the full thickness of the epidermis, which was the predominant pattern in very few cases (1 Bowen disease and 1 bowenoid AK). In addition, 1 case of bowenoid AK showed CK17 expression in a "skyline" pattern in the basal layer of the epidermis. Cytokeratin 17 immunostaining did not allow us to distinguish between the 3 entities studied. However, the immunostaining allowed us to distinguish atypical foci in the biopsies, even if atypicality was minimal. In addition, CK17 was useful in identifying surgical borders involved by disease in cases in which the hematoxylin-eosin was difficult to evaluate. Cytokeratin 17 immunoexpression might have a role in evaluating surgical borders in some cases of AK and Bowen disease. PMID:26740287

  4. 78 FR 60900 - Kiewit Power Constructors Co. et al. (Avalotis Corp., Bowen Engineering Corporation, Commonwealth...

    Science.gov (United States)

    2013-10-02

    ... Occupational Safety and Health Administration Kiewit Power Constructors Co. et al. (Avalotis Corp., Bowen... Kiewit Power Constructors Co. (Kiewit; see 72 FR 6002). This publication included an interim order that..., Inc., NAES Power Contractors, Pullman Power, LLC, R and P Industrial Chimney Co., Inc., T. E....

  5. Optimization of Medium-Rank CBM Development by SIS Horizontal Well in M Gasfield of Bowen Basin in Australia%澳大利亚Bowen盆地M气田中煤阶煤层气水平井开发优化

    Institute of Scientific and Technical Information of China (English)

    丁伟; 夏朝辉; 韩学婷; 孙华超; 汪萍

    2014-01-01

    以澳大利亚Bowen盆地M气田中煤阶煤层气为例,依据渗透率和含气量,将储集层划分为4类,建立井组模型,提出相应的中煤阶煤层气水平井开发策略.针对I类和Ⅱ类煤储集层渗透率较高,优化单井控制面积,采用与面割理垂直的单分支SIS水平井开发,后期加密,大幅减少钻井进尺、地面井口数;针对Ⅲ类煤储集层,考虑先期投产井对该区域压力的影响,适当增加单井控制面积,优化水平分支长度和夹角;Ⅳ类煤储集层渗透率较低,单井控制面积小,SIS水平井和MBL井开发效果均较差,建议暂不开发.

  6. Unsettling Australia

    DEFF Research Database (Denmark)

    Jensen, Lars

    This book is a critical intervention into debates on Australia's cultural history. The book demonstrates the interconnectedness of themes commonly seen as separate discursive formations, and shows the fruitfulness of bringing a combined cultural studies and postcolonial approach to bear on a number...

  7. New evidence of the reproductive organs of Glossopteris based on permineralized fossils from Queensland, Australia. II: pollen-bearing organ Ediea gen. nov.

    Science.gov (United States)

    Nishida, Harufumi; Pigg, Kathleen B; Kudo, Kensuke; Rigby, John F

    2014-03-01

    Ediea homevalensis H. Nishida, Kudo, Pigg & Rigby gen. et sp. nov. is proposed for permineralized pollen-bearing structures from the Late Permian Homevale Station locality of the Bowen Basin, Queensland, Australia. The taxon represents unisexual fertile shoots bearing helically arranged leaves on a central axis. The more apical leaves are fertile microsporophylls bearing a pair of multi-branched stalks on their adaxial surfaces that each supports a cluster of terminally borne pollen sacs. Proximal to the fertile leaves there are several rows of sterile scale-like leaves. The pollen sacs (microsporangia) have thickened and dark, striate walls that are typical of the Arberiella type found in most pollen organs presumed to be of glossopterid affinity. An examination of pollen organs at several developmental stages, including those containing in situ pollen of the Protohaploxypinus type, provides the basis for a detailed analysis of these types of structures, which bear similarities to both compression/impression Eretmonia-type glossopterid microsporangiate organs and permineralized Eretmonia macloughlinii from Antarctica. These fossils demonstrate that at least some Late Permian pollen organs were simple microsporophyll-bearing shoot systems and not borne directly on Glossopteris leaves. PMID:24165836

  8. A century-scale, human-induced ecohydrological evolution of wetlands of two large river basins in Australia (Murray) and China (Yangtze)

    Science.gov (United States)

    Kattel, Giri R.; Dong, Xuhui; Yang, Xiangdong

    2016-06-01

    Recently, the provision of food and water resources of two of the world's largest river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back for some centuries from wetlands of these river basins, reveal that rapid, basin-wide development has reduced the resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. Large-scale human disturbance to river systems, due to river regulation during the mid-20th century, has transformed the hydrology of rivers and wetlands, causing widespread modification of aquatic biological communities. Changes to cladoceran zooplankton (water fleas) were used to assess the historical hydrology and ecology of three Murray and Yangtze river wetlands over the past century. Subfossil assemblages of cladocerans retrieved from sediment cores (94, 45, and 65 cm) of three wetlands: Kings Billabong (Murray), Zhangdu, and Liangzi lakes (Yangtze), showed strong responses to hydrological changes in the river after the mid-20th century. In particular, river regulation caused by construction of dams and weirs together with river channel modifications, has led to significant hydrological alterations. These hydrological disturbances were either (1) a prolonged inundation of wetlands or (2) reduced river flow, both of which caused variability in wetland depth. Inevitably, these phenomena have subsequently transformed the natural wetland habitats, leading to a switch in cladoceran assemblages to species preferring poor water quality, and in some cases to eutrophication. The quantitative and qualitative decline of wetland water conditions is indicative of reduced ecosystem services, and requires effective restoration measures for both river basins which have been impacted by recent socioeconomic development and climate change.

  9. Water Scarcity and Water Markets: A Comparison of Institutions and Practices in the Murray-Darling Basin of Australia and the Western US

    OpenAIRE

    R. Quentin Grafton; Gary D. Libecap; Eric C. Edwards; O’Brien, R.J. (Bob); Clay Landry

    2010-01-01

    Water markets in Australia’s Murray-Darling Basin (MDB) and the US west are compared in terms of their ability to allocate scarce water resources among competing uses. Both locations have been in the forefront of the development of water markets with defined water rights and conveyance structures to assist in the reallocation of water across competing demands. They also share the challenge of managing water with climate variability and climate change. As these two markets occur in developed, ...

  10. 〈Case Reports〉Pigmented Bowen's disease of the palm mimicking malignant melanoma: report of a case

    OpenAIRE

    Yoshida, Masuki; Kawada, Akira

    2013-01-01

    [Abstract] A variety of cutaneous lesions may clinically simulate malignant melanoma, including Bowen's disease, which is a squamous cell carcinoma in situ that typically presents as a scaly pink to erythematous patch or plaque. On rare occasions, the lesion is pigmented and may resemble seborrheic keratosis, actinic keratosis, basal cell carcinoma, atypical nevus, or melanoma, and the correct diagnosis is suggested by dermatoscopy. We report an unusual case of pigmented Bowen's disease of th...

  11. Use of Hydrochemistry, Stable Isotope, Radiocarbon, 222Rn and Terrigenic 4He to Study the Geochemical Processes and the Mode of Vertical Leakage to the Gambier Basin Tertiary Confined Sand Aquifer, South Australia

    Directory of Open Access Journals (Sweden)

    Nara Somaratne

    2016-04-01

    Full Text Available The mode of vertical recharge to aquifers is important to the application of appropriate recharge estimation methods. This study identifies the origin, geochemical evolution and mode of vertical leakage to the Gambier Basin confined aquifer, south east of South Australia. The recharge zone spans areas of the Glencoe-Nangwarry-Nagwarry (GNN. The Hundreds of Glencoe and Nangwarry are in South Australia, and the Parish of Nagwarry adjoins Nangwarry in western Victoria. The plot of stable isotopes of water molecules, δ2H versus δ18O, indicates that local rainfall with minor surface evaporation is the source of recharge. The results of hydrochemical analysis indicate that the sources of ions in the recharge zone groundwater are derived from carbonate and silicate weathering with cation exchange. The majority of water types (66% of samples within the South Australian part of the recharge zone show Ca-Na-HCO3-Cl due to carbonate dissolution processes, and about 83% of samples within the Victorian part of the recharge zone show Na-Ca-HCO3-Cl water types, indicating cation exchange or mixing with other waters. The influence of faults on vertical leakage was studied at eight sites located in the Nangwarry and Nagwarry area using electrical conductivity logging, measuring the concentration of radiocarbon activity, δ18O, 222Rn and terrigenic 4He in the vertical profiles. Results show that regardless of land use in the study area, the interconnection of the unconfined Tertiary limestone aquifer with the Tertiary confined sand aquifer occurs, via both diffuse and preferential flows. Thus, the application of conventional vertical leakage estimation methods using Darcy’s equation or the application of tracer techniques may be inappropriate unless the duality of the flow system is considered.

  12. Bowen blend echo-tomography of low mass X-ray binaries

    CERN Document Server

    Muñoz-Darias, T; Casares, J; Cornelisse, R; Dhillon, V S; Marsh, T R; Steeghs, D; O'Brien, K; Charles, P A; Still, M

    2007-01-01

    We present simultaneous high time resolution (1-10 Hz) X-ray and optical observations of the persistent LMXBs Sco X-1 and V801 Ara(=4U 1636-536). In the case of Sco X-1 we find that the Bowen/HeII emission lags the X-ray light-curves with a light travel time of ~11-16s which is consistent with reprocessing in the donor star. We also present the detection of three correlated X-ray/optical bursts in V801 ara. Although this latter project is still in progress our preliminary results obtained by subtracting the Continuum light-curve from the Bowen/HeII data provide evidence of orbital phase dependent echoes from the companion star.

  13. Health Information Management Leaders and the Practice of Leadership through the Lens of Bowen Theory

    OpenAIRE

    Sheridan, Patty Thierry; Watzlaf, Valerie; Fox, Leslie Ann

    2016-01-01

    Even though leadership is one of the most examined topics in the organizational literature, its application in the field of health information management (HIM) has not been studied extensively. This descriptive, mixed-methodology study examined HIM leadership through the lens of Bowen theory. The researchers conducted surveys of HIM directors and managers, administrators and colleagues of HIM leaders, and HIM staff using focus groups, observations of meetings, and face-to-face interviews. Res...

  14. Dermoscopic Features of Pigmented Bowen's Disease in a Japanese Female Mimicking Malignant Melanoma

    OpenAIRE

    Takayuki Inoue; Ken Kobayashi; Mizuki Sawada; Sumiko Ishizaki; Haruo Ito; Mariko Fujibayashi; Masaru Tanaka

    2010-01-01

    Various structures have been reported for dermoscopic features of pigmented Bowen's disease (BD), which could be a mimic of various pigmented skin lesions. A 79-year-old Japanese woman presented with a 3-year history of brown-black macule on her right upper arm without symptom. Dermoscopic examination demonstrated irregular flossy streaks, irregular brown dots/globules, blue-whitish regression structures, and overlaying whitish scaly areas. We suspected pigmented skin lesions including seborr...

  15. High-Resolution Magnetic Susceptibility Stratigraphy Spanning Late Devonian Global Change from a New Scientific Drillcore in Canning Basin, Northwest Australia

    Science.gov (United States)

    Diamond, M. R.; Raub, T. D.; Kirschvink, J. L.; Playton, T. E.; Hocking, R. M.; Haines, P.; Tulipani, S.

    2010-12-01

    New shallow scientific drillcore has been recovered through the Frasnian-Famennian extinction boundary in northwest Australia’s Canning Basin. Previous work in the McWhae Ridge outcrop belt has identified patterns of turnover in trilobites and other fauna, change from sponge- and coral-dominated reefs to post-extinction microbial-dominated reefs, apparent sea level changes, and carbon isotopic evidence of late Devonian crisis. Continuous magnetic susceptibility (MS) stratigraphy yields highly structured oscillations spanning ~42 m of reef-slope carbonate. These oscillations appear to identify late Frasnian “Kellwasser” events and they may record sedimentary response to orbital variations, establishing a high-resolution relative chronostratigraphy of late Devonian global change. Magnetic susceptibility stratigraphy has been proposed as a generally useful chronometer for late Devonian time. Most of fifteen published MS stratigraphies crossing the Frasnian-Famennian boundary appear to share major excursions with the new McWhae Ridge result. Although upland tectonism in Canning Basin may be a caveat to straightforward eustatic interpretation of magnetic susceptibility variations, we suggest the higher-resolution and fresh drillcore context of this result prioritizes it as a standard for Frasnian-Famennian magnetic susceptibility variation.

  16. A new method to measure bowen ratios using high resolution vertical dry and wet bulb temperature profiles

    Directory of Open Access Journals (Sweden)

    T. Euser

    2013-06-01

    Full Text Available The Bowen ratio surface energy balance method is a relatively simple method to determine the latent heat flux and the actual land surface evaporation. Despite its simplicity, the Bowen ratio method is generally considered to be unreliable due to the use of two-level sensors that are installed by default in operational Bowen ratio systems. In this paper we present the concept of a new measurement methodology to estimate the Bowen ratio from high resolution vertical dry and wet bulb temperature profiles. A short field experiment with Distributed Temperature Sensing (DTS in a fibre optic cable having 13 levels was undertaken. A dry and a wetted section of a fibre optic cable were suspended on a 6 m high tower installed over a sugar beet trial near Pietermaritzburg (South Africa. Using the DTS cable as a psychrometer, a near continuous observation of vapour pressure and temperature at 0.20 m intervals was established. These data allows the computation of the Bowen ratio with a high precision. By linking the Bowen ratio to net radiation and soil heat flux, the daytime latent heat flux was estimated. The latent heat flux derived from DTS-based Bowen ratio (BR-DTS showed consistent agreement (correlation coefficients between 0.97 and 0.98 with results derived from eddy covariance, surface layer scintillometer and surface renewal techniques. The latent heat from BR-DTS overestimated the latent heat derived with the eddy covariance by 4% and the latent heat derived with the surface layer scintillometer by 8%. Through this research, a new window is opened to engage on simplified, inexpensive and easy to interpret in situ measurement techniques for measuring evaporation.

  17. A new method to measure Bowen ratios using high-resolution vertical dry and wet bulb temperature profiles

    Science.gov (United States)

    Euser, T.; Luxemburg, W. M. J.; Everson, C. S.; Mengistu, M. G.; Clulow, A. D.; Bastiaanssen, W. G. M.

    2014-06-01

    The Bowen ratio surface energy balance method is a relatively simple method to determine the latent heat flux and the actual land surface evaporation. The Bowen ratio method is based on the measurement of air temperature and vapour pressure gradients. If these measurements are performed at only two heights, correctness of data becomes critical. In this paper we present the concept of a new measurement method to estimate the Bowen ratio based on vertical dry and wet bulb temperature profiles with high spatial resolution. A short field experiment with distributed temperature sensing (DTS) in a fibre optic cable with 13 measurement points in the vertical was undertaken. A dry and a wetted section of a fibre optic cable were suspended on a 6 m high tower installed over a sugar beet trial plot near Pietermaritzburg (South Africa). Using the DTS cable as a psychrometer, a near continuous observation of vapour pressure and air temperature at 0.20 m intervals was established. These data allowed the computation of the Bowen ratio with a high spatial and temporal precision. The daytime latent and sensible heat fluxes were estimated by combining the Bowen ratio values from the DTS-based system with independent measurements of net radiation and soil heat flux. The sensible heat flux, which is the relevant term to evaluate, derived from the DTS-based Bowen ratio (BR-DTS) was compared with that derived from co-located eddy covariance (R2 = 0.91), surface layer scintillometer (R2 = 0.81) and surface renewal (R2 = 0.86) systems. By using multiple measurement points instead of two, more confidence in the derived Bowen ratio values is obtained.

  18. A new method to measure bowen ratios using high resolution vertical dry and wet bulb temperature profiles

    Science.gov (United States)

    Euser, T.; Luxemburg, W.; Everson, C.; Mengistu, M.; Clulow, A.; Bastiaanssen, W.

    2013-06-01

    The Bowen ratio surface energy balance method is a relatively simple method to determine the latent heat flux and the actual land surface evaporation. Despite its simplicity, the Bowen ratio method is generally considered to be unreliable due to the use of two-level sensors that are installed by default in operational Bowen ratio systems. In this paper we present the concept of a new measurement methodology to estimate the Bowen ratio from high resolution vertical dry and wet bulb temperature profiles. A short field experiment with Distributed Temperature Sensing (DTS) in a fibre optic cable having 13 levels was undertaken. A dry and a wetted section of a fibre optic cable were suspended on a 6 m high tower installed over a sugar beet trial near Pietermaritzburg (South Africa). Using the DTS cable as a psychrometer, a near continuous observation of vapour pressure and temperature at 0.20 m intervals was established. These data allows the computation of the Bowen ratio with a high precision. By linking the Bowen ratio to net radiation and soil heat flux, the daytime latent heat flux was estimated. The latent heat flux derived from DTS-based Bowen ratio (BR-DTS) showed consistent agreement (correlation coefficients between 0.97 and 0.98) with results derived from eddy covariance, surface layer scintillometer and surface renewal techniques. The latent heat from BR-DTS overestimated the latent heat derived with the eddy covariance by 4% and the latent heat derived with the surface layer scintillometer by 8%. Through this research, a new window is opened to engage on simplified, inexpensive and easy to interpret in situ measurement techniques for measuring evaporation.

  19. Besshi-type mineral systems in the Palaeoproterozoic Bryah Rift-Basin, Capricorn Orogen, Western Australia:Implications for tectonic setting and geodynamic evolution

    Institute of Scientific and Technical Information of China (English)

    Franco Pirajno; Yanjing Chen; Nuo Li; Chao Li; Limin Zhou

    2016-01-01

    In this contribution we use VMS mineral systems in the Bryah rift-basin to constrain the tectonic setting of the widespread mafic and ultramafic magmatism that characterises the rift-basin in question. Two distinct, but temporally closely associated, lithostratigraphic sequences, Narracoota and Karalundi For-mations, are discussed. The Karalundi Formation is the main host of VMS mineral systems in the region. The Karalundi Formation consists of turbiditic and immature clastic sediments, which are locally intercalated with basaltic hyaloclastites, dolerites and banded jaspilites. We propose that the basaltic hyaloclastites, dolerites and clastics and jaspilites rocks, form a distinct unit of the Karalundi Formation, named Noonyereena Member. The VMS mineral systems occur near the north-east trending Jenkin Fault and comprise the giant and world-class DeGrussa and the Red Bore deposits. The nature of these deposits and their intimate association with terrigenous clastic rocks and dominantly marine mafic volcanic and subvolcanic rocks, as well as the common development of peperitic margins, are considered indicative of a Besshi-type environment, similar to that of present-day Gulf of California. Our Re-Os age data from a primary pyrite yielded a mean model age of 2012 ? 48 Ma, which coincides (within error) with recent published Re-Os data (Hawke et al., 2015) and confirms the timing of the proposed geodynamic evo-lution. We propose a geodynamic model that attempts to explain the presence of the Narracoota and Karalundi Formations as the result of mantle plume activity, which began with early uplift of continental crust with intraplate volcanism, followed by early stages of rifting with the deposition of the Karalundi Formation (and Noonyereena Member), which led to the formation of Besshi-type VMS deposits. With on-going mantle plume activity and early stages of continental separation, an oceanic plateau was formed and is now represented by mafic-ultramafic rocks of

  20. Socio-hydrologic modeling to understand and mediate the competition for water between agriculture development and environmental health: Murrumbidgee River Basin, Australia

    Directory of Open Access Journals (Sweden)

    T. H. M. van Emmerik

    2014-03-01

    Full Text Available Competition for water between humans and ecosystems is set to become a flash point in the coming decades in many parts of the world. An entirely new and comprehensive quantitative framework is needed to establish a holistic understanding of that competition, thereby enabling the development of effective mediation strategies. This paper presents a modeling study centered on the Murrumbidgee River Basin (MRB. The MRB has witnessed a unique system dynamics over the last 100 years as a result of interactions between patterns of water management and climate driven hydrological variability. Data analysis has revealed a pendulum swing between agricultural development and restoration of environmental health and ecosystem services over different stages of basin scale water resource development. A parsimonious, stylized, quasi-distributed coupled socio-hydrologic system model that simulates the two-way coupling between human and hydrological systems of the MRB is used to mimic dominant features of the pendulum swing. The model consists of coupled nonlinear ordinary differential equations that describe the interaction between five state variables that govern the co-evolution: reservoir storage, irrigated area, human population, ecosystem health, and a measure of environmental awareness. The model simulations track the propagation of the external climatic and socio-economic drivers through this coupled, complex system to the emergence of the pendulum swing. The model results point to a competition between human "productive" and environmental "restorative" forces that underpin the pendulum swing. Both the forces are endogenous, i.e., generated by the system dynamics in response to external drivers and mediated by humans through technology change and environmental awareness, respectively. We propose this as a generalizable modeling framework for coupled human hydrological systems that is potentially transferable to systems in different climatic and socio

  1. Wide-area estimates of evapotranspiration by red gum (Eucalyptus camaldulensis) and associated vegetation in the Murray-Darling River Basin, Australia

    Science.gov (United States)

    Nagler, Pamela L.; Doody, Tanya M.; Glenn, Edward P.; Jarchow, Christopher J; Barreto-Munoz, Armando; Didan, Kamel

    2016-01-01

    Floodplain red gum forests (Eucalyptus camaldulensis plus associated grasses, reeds and sedges) are sites of high biodiversity in otherwise arid regions of southeastern Australia. They depend on periodic floods from rivers, but dams and diversions have reduced flood frequencies and volumes, leading to deterioration of trees and associated biota. There is a need to determine their water requirements so environmental flows can be administered to maintain or restore the forests. Their water requirements include the frequency and extent of overbank flooding, which recharges the floodplain soils with water, as well as the actual amount of water consumed in evapotranspiration (ET). We estimated the flooding requirements and ET for a 38 134 ha area of red gum forest fed by the Murrumbidgee River in Yanga National Park, New South Wales. ET was estimated by three methods: sap flux sensors placed in individual trees; a remote sensing method based on the Enhanced Vegetation Index from MODIS satellite imagery and a water balance method based on differences between river flows into and out of the forest. The methods gave comparable estimates yet covered different spatial and temporal scales. We estimated flood frequency and volume requirements by comparing Normalized Difference Vegetation Index values from Landsat images with flood history from 1995 to 2014, which included both wet periods and dry periods. ET during wet years is about 50% of potential ET but is much less in dry years because of the trees' ability to control stomatal conductance. Based on our analyses plus other studies, red gum trees at this location require environmental flows of 2000 GL yr−1 every other year, with peak flows of 20 000 ML d−1, to produce flooding sufficient to keep them in good condition. However, only about 120–200 GL yr−1 of river water is consumed in ET, with the remainder flowing out of the forest where it enters the Murray River system.

  2. Socio-hydrologic modeling to understand and mediate the competition for water between agriculture development and environmental health: Murrumbidgee River basin, Australia

    Science.gov (United States)

    van Emmerik, T. H. M.; Li, Z.; Sivapalan, M.; Pande, S.; Kandasamy, J.; Savenije, H. H. G.; Chanan, A.; Vigneswaran, S.

    2014-10-01

    Competition for water between humans and ecosystems is set to become a flash point in the coming decades in many parts of the world. An entirely new and comprehensive quantitative framework is needed to establish a holistic understanding of that competition, thereby enabling the development of effective mediation strategies. This paper presents a modeling study centered on the Murrumbidgee River basin (MRB). The MRB has witnessed a unique system dynamics over the last 100 years as a result of interactions between patterns of water management and climate driven hydrological variability. Data analysis has revealed a pendulum swing between agricultural development and restoration of environmental health and ecosystem services over different stages of basin-scale water resource development. A parsimonious, stylized, quasi-distributed coupled socio-hydrologic system model that simulates the two-way coupling between human and hydrological systems of the MRB is used to mimic and explain dominant features of the pendulum swing. The model consists of coupled nonlinear ordinary differential equations that describe the interaction between five state variables that govern the co-evolution: reservoir storage, irrigated area, human population, ecosystem health, and environmental awareness. The model simulations track the propagation of the external climatic and socio-economic drivers through this coupled, complex system to the emergence of the pendulum swing. The model results point to a competition between human "productive" and environmental "restorative" forces that underpin the pendulum swing. Both the forces are endogenous, i.e., generated by the system dynamics in response to external drivers and mediated by humans through technology change and environmental awareness, respectively. Sensitivity analysis carried out with the model further reveals that socio-hydrologic modeling can be used as a tool to explain or gain insight into observed co-evolutionary dynamics of diverse

  3. Doença de bowen perianal - diagnóstico e tratamento: relato de caso Perianal bowen's disease - diagnosis and treatment: case report

    Directory of Open Access Journals (Sweden)

    Luciana Paes Peixoto Netto

    2009-03-01

    Full Text Available Os autores relatam um caso e objetivam a discussão sobre a Doença de Bowen. Patologia de ocorrência rara, principalmente na região perianal. Trata-se de um carcinoma escamoso in situ com potencial invasor. Apresenta como característica marcante alterações histopatológicas da epiderme que não ultrapassam a membrana basal. É doença de evolução lenta, oligo ou assintomática e de aspecto macroscópico variável. Assim sendo, muitas vezes o diagnóstico é retardado. A confirmação diagnóstica se dá por biópsia e estudo histopatológico. O tratamento de escolha, por seus menores índices de recidiva, é a ressecção cirúrgica com margens amplas. A utilização de enxertos ou retalhos é frequentemente necessária para corrigir o defeito cutâneo deixado e permitir a cicatrização satisfatória.The authors report a case and aimed at discussing about Bowen's disease, an unusual pathology, especially in perianal area. It is an in situ carcinoma with invasive potential. Epidermal's histological abnormalities with basal membrane preservation is its main characteristic. This disease presents a slow progression, few or no specific symptoms and variable macroscopic aspect. These facts lead in several times to a late diagnosis. Biopsies and histopathological study confirm the diagnosis. The treatment of choice is wide surgical resection. Often it is necessary to utilize grafts or flaps to correct the cutaneous defects and allows a satisfactory cicatrization.

  4. Measurements and modelling of evapotransiration to assess agricultural water productivity in basins with changing land use patterns : a case study in the São Francisco River basin, Brazil

    NARCIS (Netherlands)

    Castro Teixeira, de A.H.

    2008-01-01

    Key words: Vineyards, mango, energy balance, evapotranspiration, water productivity, Bowen ratio, eddy correlation, water balance, natural vegetation, latent heat flux, sensible heat flux, biomass, water productivity, remote sensing, water management. . The São Francisco River basin in Brazil is m

  5. en Australia

    Directory of Open Access Journals (Sweden)

    Stephen Bell

    2006-01-01

    Full Text Available El argumento de que los mercados financieros globales imponen una “camisa de fuerza dorada” consistente en políticas macroeconómicas restrictivas es probada con relación a la política monetaria australiana. En contraste con los argumentos comunes de los teóricos de la globalización y las restricciones de política se argumenta que las autoridades monetarias en Australia han sido capaces de forjar un enfoque de política relativamente distintivo que ha empujado al crecimiento. Se argumenta así, por lo menos en este caso, que los argumentos restrictivos de la política neoliberal no deberían retraer innovaciones en la elección de política interna.

  6. Fluid inclusion and vitrinite-reflectance geothermometry compared to heat-flow models of maximum paleotemperature next to dikes, western onshore Gippsland Basin, Australia

    Science.gov (United States)

    Barker, C.E.; Bone, Y.; Lewan, M.D.

    1999-01-01

    Nine basalt dikes, ranging from 6 cm to 40 m thick, intruding the Upper Jurassic-Lower Cretaceous Strzelecki Group, western onshore Gippsland Basin, were used to study maximum temperatures (Tmax) reached next to dikes. Tmax was estimated from fluid inclusion and vitrinitereflectance geothermometry and compared to temperatures calculated using heat-flow models of contact metamorphism. Thermal history reconstruction suggests that at the time of dike intrusion the host rock was at a temperature of 100-135??C. Fracture-bound fluid inclusions in the host rocks next to thin dikes ( 1.5, using a normalized distance ratio used for comparing measurements between dikes regardless of their thickness. In contrast, the pattern seen next to the thin dikes is a relatively narrow zone of elevated Rv-r. Heat-flow modeling, along with whole rock elemental and isotopic data, suggests that the extended zone of elevated Rv-r is caused by a convection cell with local recharge of the hydrothermal fluids. The narrow zone of elevated Rv-r found next to thin dikes is attributed to the rise of the less dense, heated fluids at the dike contact causing a flow of cooler groundwater towards the dike and thereby limiting its heating effects. The lack of extended heating effects suggests that next to thin dikes an incipient convection system may form in which the heated fluid starts to travel upward along the dike but cooling occurs before a complete convection cell can form. Close to the dike contact at X/D 1.5. ?? 1998 Elsevier Science B.V. All rights reserved.

  7. Building the New England Batholith, eastern Australia-Linking granite petrogenesis with geodynamic setting using Hf isotopes in zircon

    Science.gov (United States)

    Phillips, G.; Landenberger, B.; Belousova, E. A.

    2011-02-01

    U-Pb and Hf isotope analysis of zircons from granitoids of the Permian-Triassic New England Batholith (eastern Australia) was carried out to provide constraints on the evolution of an isotopically and compositionally diverse batholith. Incipient plutonism in the early Permian resulted in the formation of isotopically evolved, peraluminous granodiorites of the Hillgrove Suite. Following this, mixing between crustal-derived (+ 5-+ 8 εHf units) and depleted mantle-derived magmas (+ 13-+ 18 εHf units), was responsible for the formation of the c. 282 Ma Bundarra Suite. The strongly metaluminous and isotopically depleted granites of the c. 268 Ma Clarence River Suite (+ 11-+ 16 εHf units) signify an increased role of isotopically depleted magmas during the formation of plutonic rocks in the middle Permian. Interestingly, this isotopic and chemical transience coincides with orogenic extension that was associated with the relocation for the southern New England Orogen (NEO) from a continental margin accretionary setting to that of a back-arc basin. Following attenuation, the NEO was thickened by contraction during the Hunter Bowen Event (265-255 Ma). Forming after the Hunter Bowen Event, the metaluminous rocks of the c. 256 Ma Moonbi Suite were the product of mixing between magmas derived from evolved metaigneous rocks and enriched mantle (+ 3-+ 8 εHf units). We attribute the switch in isotopic character from highly depleted (i.e., Clarence River Suite) to evolved (i.e., Moonbi Suite) to crustal thickness before (i.e., thin) and after (i.e., thick) the Hunter Bowen Event. Evidence of renewed mixing between depleted and evolved magmas characterises the formation of the c. 249 Ma Uralla Suite (+ 7-+ 16 εHf units), which interestingly, was coeval with renewed orogenic extension in the early Triassic. Finally, the melting of deep crustal basalts below the southern New England Orogen in the middle Triassic (c. 233 Ma) resulted in the formation of moderately depleted

  8. Developing a new model for the Great Artesian Basin of Australia: hydrologic mixing, multi-scale flow systems, fault-partitioned sub-basins, and mantle influences on groundwater quality, superimposed on regional flow systems

    Science.gov (United States)

    Love, A.; Karlstrom, K. E.; Crossey, L. J.; Shand, P.; Rousseau-Gueutin, P.; Priestley, S.; Poreda, R. J.

    2010-12-01

    The dominant paradigm for the Great Artesian Basin over the last several decades has documented recharge in the eastern Australian Great Dividing Ranges, relatively simple regional SW flow paths in a confined aquifer system (J-K aquifer), and discharge in springs and bores in the western GAB. New geochemical and hydrologic data suggest this model needs modifications in several fundamental ways. 1) 3He/4He synthesis of springs and bores from the GAB show persistent but variable inputs of deeply derived fluid that contain mantle 3He. 3He/4He values up to 3.4 RA are present in the eastern GAB , comparable to RA of 3-4 in the southeastern GAB, and RA of 3 from volcanic regions outside the GAB, e.g. Caroline Well of Mt Gambier volcanic district. These high values (relative to MORB RA= 8) suggest that up to 40% of the He in some GAB groundwaters is from the mantle and that fluid/gas composition is influenced by basalt transfer in the lower lithosphere, microseismicity in the upper crust, and ascent of fluids up faults into the aquifer. 3He/4He data from mound springs in the western GAB have RA up to 0.09 and CO2/3He= 4x109 (Bubble Mound Springs). Given the high 4He contributions from radiogenic crust in the region and the old age of these waters, these values also suggest input of mantle fluids that have traveled up deep-seated faults into the J-K aquifer. 2) Water chemistry and C-isotope values also suggest mixing of endogenic (deeply derived) fluids with aquifer waters such that water quality in the J-K aquifer is a product of water evolution along far-traveled flow paths from the Great Dividing ranges plus local inputs of fluids from below into the aquifer. C-isotope data show that a significant percentage of the CO2 is also likely from mantle sources. 3) Hydrochemical data indicate that spring groups in the western GAB that were considered the dominant discharge springs (Dalhousie and South Australian mound springs) are hydrochemically distinct from each other and

  9. Immigrant Families in Australia

    OpenAIRE

    Jock Collins

    1992-01-01

    Australia has a larger and more diverse immigrant population than most Western societies. Australia's immigration history is linked to the story of family migration as Australia sought immigrants for permanent settlement. However, it is important to aviod over-generalisation when studying immigrant families in Australia today. The main hypothesis is that in order to understand the immigrant family in Australia today it is necessary to study the intersection of factors such as ethnicity, class...

  10. Measurements and modelling of evapotransiration to assess agricultural water productivity in basins with changing land use patterns : a case study in the São Francisco River basin, Brazil

    OpenAIRE

    Castro Teixeira, de, A.H.

    2008-01-01

    Key words: Vineyards, mango, energy balance, evapotranspiration, water productivity, Bowen ratio, eddy correlation, water balance, natural vegetation, latent heat flux, sensible heat flux, biomass, water productivity, remote sensing, water management. . The São Francisco River basin in Brazil is marked by socio-eco¬nomic disparities and environmental vulnerabilities. Water managers in the semi-arid region of the basin are faced with several challenges, such as competition among different wate...

  11. Crop water parameters of irrigated wine and table grapes to support water productivity analysis in the Sao Francisco river basin, Brazil

    NARCIS (Netherlands)

    Castro Teixeira, de A.H.; Bastiaanssen, W.G.M.; Bassoi, L.H.

    2007-01-01

    Energy and water balance parameters were measured in two commercial vineyards in the semiarid region of the São Francisco river basin, Brazil. Actual evapotranspiration (ET) was acquired with the Bowen ratio surface energy balance method. The ratio of the latent heat flux to the available energy, or

  12. Focus of tricholemmal differentiation (tricholemmal carcinoma) within Bowen's disease/carcinoma.

    Science.gov (United States)

    Misago, Noriyuki; Toda, Shuji; Nakao, Tomokazu

    2016-04-01

    Bowen's disease (BD)/carcinoma is a type of squamous cell carcinoma of the skin, however, the possibility of adnexal differentiation (the development of sebaceous carcinoma or porocarcinoma) occurring in BD/carcinoma has been suggested. We herein describe a case of BD with superficial invasive carcinoma, which showed a clear cell focus, demonstrating tricholemmal differentiation. This clear cell focus showed the following findings: primarily composed of clear cells, somewhat columnar clear cells aligned in a palisade along a discernible basement membrane, tricholemmal keratinization and glycogen contained within the cells. In addition, the immunohistochemical profile in this clear cell focus, namely, negative staining for cytokeratin (CK)1 and positive staining for CK17 and calretinin in the inner cells of the neoplastic lobule, corresponded to that of the outer root sheath cells. This case suggested that adnexal differentiation can rarely occur within true BD/carcinoma, although adnexal carcinomas are commonly associated with a simple bowenoid change.

  13. Focus of tricholemmal differentiation (tricholemmal carcinoma) within Bowen's disease/carcinoma.

    Science.gov (United States)

    Misago, Noriyuki; Toda, Shuji; Nakao, Tomokazu

    2016-04-01

    Bowen's disease (BD)/carcinoma is a type of squamous cell carcinoma of the skin, however, the possibility of adnexal differentiation (the development of sebaceous carcinoma or porocarcinoma) occurring in BD/carcinoma has been suggested. We herein describe a case of BD with superficial invasive carcinoma, which showed a clear cell focus, demonstrating tricholemmal differentiation. This clear cell focus showed the following findings: primarily composed of clear cells, somewhat columnar clear cells aligned in a palisade along a discernible basement membrane, tricholemmal keratinization and glycogen contained within the cells. In addition, the immunohistochemical profile in this clear cell focus, namely, negative staining for cytokeratin (CK)1 and positive staining for CK17 and calretinin in the inner cells of the neoplastic lobule, corresponded to that of the outer root sheath cells. This case suggested that adnexal differentiation can rarely occur within true BD/carcinoma, although adnexal carcinomas are commonly associated with a simple bowenoid change. PMID:26365015

  14. Ingenol mebutate gel for the treatment of Bowen's disease: a case report of three patients.

    Science.gov (United States)

    Salleras Redonnet, M; Quintana Codina, M

    2016-07-01

    We report three Bowen's disease (BD) cases treated with ingenol mebutate (IM), a novel topical chemotherapeutic agent approved for the treatment of actinic keratosis (AK) that is available in two doses: 0.015% and 0.05%. Three women diagnosed with BD exhibited a positive response after 2 or 3 day period of IM treatment, depending on lesion location. In the three cases, clinical resolution was observed 4 or 9 weeks posttreatment, and was confirmed with histopathology. Local skin reactions were common the first week after treatment but they resolved spontaneously. In our opinion these cases, along with another case reported in Germany, support the concept of commencing of clinical trials using IM on patients with BD. PMID:26969886

  15. Anomalously high intercombination line ratios in symbiotic stars - Extreme Bowen pumping?

    Science.gov (United States)

    Kastner, S. O.; Bhatia, A. K.; Feibelman, W. A.

    1989-01-01

    International Ultraviolet Explorer observations of the ratio of the O III intercombination lines near 1660 A are assembled, showing that the observed ratios in symbiotic stars are significantly higher than the theoretically predicted optically thin limit of 2.5. The presence of an enhancing physical process is thereby indicated. It is suggested that Bowen pumping of the lower level of the 1666.2 A line in an 'external saturation' limit, coupled with appreciable optical depth, could logically explain the high ratios. Some tentative evidence for this is presented and the relevance of far-infrared observations of the O III 51.8 and 88.3 micron lines in symbiotic sources is emphasized.

  16. Anomalously high intercombination line ratios in symbiotic stars; extreme Bowen pumping?

    International Nuclear Information System (INIS)

    We assemble International Ultraviolet Explorer observations of the ratio of the O III intercombination lines near 1660 A, showing that the observed ratios in symbiotic stars are significantly higher than the theoretically predicted optically thin limit of 2.5. The presence of an enhancing physical process is thereby indicated. It is suggested that Bowen pumping of the lower level of the 1666.2 A line in an 'external saturation' limit, coupled with appreciable optical depth, could logically explain the high ratios. Some tentative evidence for this is presented and the relevance of far-infrared observations of the O III 51.8 and 88.3 μm lines in symbiotic sources is emphasized. (author)

  17. Un perroquet peut en cacher un autre : Elizabeth Bowen, lectrice de Gustave Flaubert1

    OpenAIRE

    Juez, Brigitte Le

    2013-01-01

    Les grands écrivains anglo-irlandais nés dans la deuxième moitié du xixe siècle, comme Moore, Wilde, Yeats et Joyce, font partie de la génération admiratrice, voire disciple, de Flaubert, le percevant comme un artiste voué à un idéal littéraire, dont le talent stylistique constitue un apport nouveau. Au xxe siècle, il est généralement considéré comme l’un des grands maîtres du roman et tout lecteur cultivé se doit de bien connaître son œuvre. Elizabeth Bowen (1899-1973) avoue sans ambages son...

  18. Provenance and structural constraints of the early Permian Nambucca Block (eastern Australia), and implications for the origin of the New England oroclines

    Science.gov (United States)

    Shaanan, Uri; Rosenbaum, Gideon; Li, Pengfei; Vasconcelos, Paulo; Wormald, Richard

    2014-05-01

    The late Paleozoic to early Mesozoic southern New England Orogen of eastern Australia exhibits a remarkable omega-shaped orogenic curvature (orocline), but the geodynamic processes responsible for the formation of the orogenic curvatures (oroclines) are still unclear. Oroclinal bending took place during the early Permian, simultaneously with the development of rift-related sedimentary basins (Sydney, Gunnedah and Bowen basins), which bound the oroclines to the west. The Nambucca Block is part of another early Permian rift basin that is situated farther east, in the core of the oroclinal structure. We present new stratigraphic, structural and geochronological data from the Nambucca Block in an attempt to better understand its provenance, tectonic history and its role in the formation of the oroclines. Four phases of folding and associated structural fabrics are recognised in the Nambucca Block. 40Ar/39Ar age of metamorphic micas from the second deformational phase provides a minimum depositional age constraint at 275-265 Ma. This age overlaps with the timing of oroclinal bending, suggesting that the first two phases of deformation resulted from the same mechanism that formed the oroclines. Detrital zircon geochronology (U/Pb ICP-MS ages) of six samples from the Nambucca Block constrains the maximum depositional age of the sequence to 280 Ma. The sedimentary succession, though extremely polymictic, is unimodal in its sources, and is therefore interpreted to consist mainly of recycled detritus from a Devonian-Carboniferous accretionary complex. We propose a model for oroclinal bending involving three stages. The first stage, starting at about 293 Ma and including the deposition of the sequence of Nambucca (i.e. overlaps with the 280-265 Ma time constraint), was associated with formation of rift basins in an extensional backarc setting. This was followed by N-S contraction, which gave rise to second-order oroclinal structures. The third and final stage involved

  19. Doença de Bowen na região perianal tratada com criocirurgia com nitrogênio líquido Perianal Bowen's disease treated with liquid nitrogen cryosurgery

    OpenAIRE

    Aparecida Machado de Moraes; Sílvia Helena Rodrigues Leite; Maria Letícia Cintra; Eliane Ramires Terrazas; Elemir Macedo de Souza

    2002-01-01

    Doença de Bowen designa carcinoma in situ cuja evolução é lenta e progressiva, geralmente assintomática. Na região perianal essa lesão é pouco freqüente, ocorrendo mais em indivíduos jovens. Quando acomete áreas que não sofreram exposição solar, outros fatores podem estar associados, como HPV, doenças inflamatórias ou neoplasias de cólon. A doença pode ser tratada com cirurgia convencional, criocirurgia ou terapia fotodinâmica. O objetivo é relatar um raro caso clínico da doença de Bowen, em ...

  20. Doença de Bowen na região perianal tratada com criocirurgia com nitrogênio líquido Perianal Bowen's disease treated with liquid nitrogen cryosurgery

    Directory of Open Access Journals (Sweden)

    Aparecida Machado de Moraes

    2002-10-01

    Full Text Available Doença de Bowen designa carcinoma in situ cuja evolução é lenta e progressiva, geralmente assintomática. Na região perianal essa lesão é pouco freqüente, ocorrendo mais em indivíduos jovens. Quando acomete áreas que não sofreram exposição solar, outros fatores podem estar associados, como HPV, doenças inflamatórias ou neoplasias de cólon. A doença pode ser tratada com cirurgia convencional, criocirurgia ou terapia fotodinâmica. O objetivo é relatar um raro caso clínico da doença de Bowen, em paciente do sexo feminino, jovem, negra, que apresentava uma extensa lesão na região perianal com positividade para HPV. A paciente estava em tratamento para retocolite ulcerativa com suspeita de ter, associadamente, doença de Crohn. Foi tratada com criocirurgia e evoluiu com boa cicatrização do local, sem apresentar sinais de recidiva 34 meses após o tratamento.Bowen's disease is generally an asymptomatic in situ carcinoma that develops slowly. It rarely occurs in the genital region and mainly affects young persons. Skin lesions occurring in areas not exposed to sunlight may be associated with other factors, like HPV, inflammatory disease or colon neoplasia. The disease may be treated by conventional surgery, cryosurgery or photodynamic therapy. The aim is to present the clinical characteristics of a rare case of Bowen's disease in a young, black female, who had a large lesion in the perianal region, which tested positive for HPV. The woman had been undergoing treatment for intestinal ulcerative rectocolitis or Crohn's disease. She was treated with cryosurgery and there was no sign of recurrence during the ensuing 34 months.

  1. Low Rate of Detection of Mucosal High-Risk-Type Human Papillomavirus in Korean Patients with Extragenital Bowen's Disease and Squamous Cell Carcinoma, Especially in Digital Cases

    OpenAIRE

    Hye-Rim Park; Kwang Ho Kim; Soo Kee Min; Jinwon Seo; Dong Hoon Kim; Mi Jung Kwon

    2013-01-01

    Human papillomavirus (HPV) infection has been demonstrated in some of the nonmelanoma skin cancers as well as in precancerous lesions. Multiple infections of mucosal high-risk HPV may contribute to the onset of digital Bowen's disease through, if any, digital-genital transmission. We screened for the presence of the mucosal HPV DNA in patients with extragenital Bowen's disease (n = 30), squamous cell carcinoma (n = 11), bowenoid papulosis (n = 9), verrucous carcinoma (n = 1), actinic keratosi...

  2. A century scale human-induced hydrological and ecological changes of wetlands of two large river basins in Australia (Murray) and China (Yangtze): development of an adaptive water resource management framework

    OpenAIRE

    G. R. Kattel; Dong, X.; X. Yang

    2015-01-01

    Recently, the provision of food and water resources of two of the world's large river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back to past centuries, from wetlands of these river basins reveal that rapid, basin-wide development has reduced resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. In particu...

  3. Site-specific climate analysis elucidates revegetation challenges for post-mining landscapes in eastern Australia

    Directory of Open Access Journals (Sweden)

    P. Audet

    2013-10-01

    Full Text Available In eastern Australia, the availability of water is critical for the successful rehabilitation of post-mining landscapes and climatic characteristics of this diverse geographical region are closely defined by factors such as erratic rainfall and periods of drought and flooding. Despite this, specific metrics of climate patterning are seldom incorporated into the initial design of current post-mining land rehabilitation strategies. Our study proposes that a few common rainfall parameters can be combined and rated using arbitrary rainfall thresholds to characterise bioregional climate sensitivity relevant to the rehabilitation these landscapes. This approach included assessments of annual rainfall depth, average recurrence interval of prolonged low intensity rainfall, average recurrence intervals of short or prolonged high intensity events, median period without rain (or water-deficit and standard deviation for this period in order to address climatic factors such as total water availability, seasonality and intensity – which were selected as potential proxies of both short- and long-term biological sensitivity to climate within the context of post-disturbance ecological development and recovery. Following our survey of available climate data, we derived site "climate sensitivity" indexes and compared the performance of 9 ongoing mine sites: Weipa, Mt. Isa and Cloncurry, Eromanga, Kidston, the Bowen Basin (Curragh, Tarong, North Stradbroke Island, and the Newnes Plateau. The sites were then ranked from most-to-least sensitive and compared with natural bioregional patterns of vegetation density using mean NDVI. It was determined that regular rainfall and relatively short periods of water-deficit were key characteristics of sites having less sensitivity to climate – as found among the relatively more temperate inland mining locations. Whereas, high rainfall variability, frequently occurring high intensity events, and (or prolonged seasonal

  4. Site-specific climate analysis elucidates revegetation challenges for post-mining landscapes in eastern Australia

    Science.gov (United States)

    Audet, P.; Arnold, S.; Lechner, A. M.; Baumgartl, T.

    2013-10-01

    In eastern Australia, the availability of water is critical for the successful rehabilitation of post-mining landscapes and climatic characteristics of this diverse geographical region are closely defined by factors such as erratic rainfall and periods of drought and flooding. Despite this, specific metrics of climate patterning are seldom incorporated into the initial design of current post-mining land rehabilitation strategies. Our study proposes that a few common rainfall parameters can be combined and rated using arbitrary rainfall thresholds to characterise bioregional climate sensitivity relevant to the rehabilitation these landscapes. This approach included assessments of annual rainfall depth, average recurrence interval of prolonged low intensity rainfall, average recurrence intervals of short or prolonged high intensity events, median period without rain (or water-deficit) and standard deviation for this period in order to address climatic factors such as total water availability, seasonality and intensity - which were selected as potential proxies of both short- and long-term biological sensitivity to climate within the context of post-disturbance ecological development and recovery. Following our survey of available climate data, we derived site "climate sensitivity" indexes and compared the performance of 9 ongoing mine sites: Weipa, Mt. Isa and Cloncurry, Eromanga, Kidston, the Bowen Basin (Curragh), Tarong, North Stradbroke Island, and the Newnes Plateau. The sites were then ranked from most-to-least sensitive and compared with natural bioregional patterns of vegetation density using mean NDVI. It was determined that regular rainfall and relatively short periods of water-deficit were key characteristics of sites having less sensitivity to climate - as found among the relatively more temperate inland mining locations. Whereas, high rainfall variability, frequently occurring high intensity events, and (or) prolonged seasonal drought were primary

  5. Verifying the distributed temperature sensing Bowen ratio method for measuring evaporation

    Science.gov (United States)

    Schilperoort, Bart; Coenders-Gerrits, Miriam; Luxemburg, Willem; Cisneros Vaca, César; Ucer, Murat

    2016-04-01

    Evaporation is an important process in the hydrological cycle, therefore measuring evaporation accurately is essential for water resource management, hydrological management and climate change models. Current techniques to measure evaporation, like eddy covariance systems, scintillometers, or lysimeters, have their limitations and therefore cannot always be used to estimate evaporation correctly. Also the conventional Bowen ratio surface energy balance method has as drawback that two sensors are used, which results in large measuring errors. In Euser et al. (2014) a new method was introduced, the DTS-based Bowen ratio (BR-DTS), that overcomes this drawback. It uses a distributed temperature sensing technique (DTS) whereby a fibre optic cable is placed vertically, going up and down along a measurement tower. One stretch of the cable is dry, the other wrapped with cloth and kept wet, akin to a psychrometer. Using this, the wet and dry bulb temperatures are determined every 12.5 cm over the height, from which the Bowen ratio can be determined. As radiation and wind have an effect on the cooling and heating of the cable's sheath as well, the DTS cables do not necessarily always measure dry and wet bulb temperature of the air accurately. In this study the accuracy in representing the dry and wet bulb temperatures of the cable are verified, and evaporation observations of the BR-DTS method are compared to Eddy Covariance (EC) measurements. Two ways to correct for errors due to wind and solar radiation warming up the DTS cables are presented: one for the dry cable and one for the wet cable. The measurements were carried out in a pine forest near Garderen (The Netherlands), along a 46-meter tall scaffold tower (15 meters above the canopy). Both the wet (Twet) and dry (Tdry) temperature of the DTS cable were compared to temperature and humidity (from which Twet is derived) observations from sensors placed along the height of the tower. Underneath the canopy, where there was

  6. Characterization of a new type of human papillomavirus found in a lesion of Bowen's disease of the skin.

    OpenAIRE

    M. Kawashima; Jablonska, S.; Favre, M.; Obalek, S; Croissant, O; Orth, G.

    1986-01-01

    The genome of a human papillomavirus (HPV) found in a patient with Bowen's disease of the skin was molecularly cloned. Blot hybridization experiments, performed under stringent conditions, revealed no cross-hybridization between this HPV DNA and the other known HPV DNAs, showing that this HPV represents a new type, tentatively named HPV34. In relaxed hybridization conditions, the highest cross-hybridization was observed with HPV16 DNA. The physical map of HPV34 DNA was aligned with the geneti...

  7. Taste and odor occurrence in Lake William C. Bowen and Municipal Reservoir #1, Spartanburg County, South Carolina

    Science.gov (United States)

    Journey, Celeste; Arrington, Jane M.

    2009-01-01

    The U.S. Geological Survey and Spartanburg Water are working cooperatively on an ongoing study of Lake Bowen and Reservoir #1 to identify environmental factors that enhance or influence the production of geosmin in the source-water reservoirs. Spartanburg Water is using information from this study to develop management strategies to reduce (short-term solution) and prevent (long-term solution) geosmin occurrence. Spartanburg Water utility treats and distributes drinking water to the Spartanburg area of South Carolina. The drinking water sources for the area are Lake William C. Bowen (Lake Bowen) and Municipal Reservoir #1 (Reservoir #1), located north of Spartanburg. These reservoirs, which were formed by the impoundment of the South Pacolet River, were assessed in 2006 by the South Carolina Department of Health and Environmental Control (SCDHEC) as being fully supportive of all uses based on established criteria. Nonetheless, Spartanburg Water had noted periodic taste and odor problems due to the presence of geosmin, a naturally occurring compound in the source water. Geosmin is not harmful, but its presence in drinking water is aesthetically unpleasant.

  8. Health Information Management Leaders and the Practice of Leadership through the Lens of Bowen Theory.

    Science.gov (United States)

    Sheridan, Patty Thierry; Watzlaf, Valerie; Fox, Leslie Ann

    2016-01-01

    Even though leadership is one of the most examined topics in the organizational literature, its application in the field of health information management (HIM) has not been studied extensively. This descriptive, mixed-methodology study examined HIM leadership through the lens of Bowen theory. The researchers conducted surveys of HIM directors and managers, administrators and colleagues of HIM leaders, and HIM staff using focus groups, observations of meetings, and face-to-face interviews. Results showed that HIM leaders are valued for HIM expertise in electronic health records, privacy, security, and coding; for being the center or heart of the organization; and for commonly valued leadership behaviors and skills including dependability, strategic planning, project management, listening ability, and fairness. Leadership was seen as a reciprocal process, and a team approach was preferred. Good communication, education, and training on HIM topics were also valued. However, HIM leaders believed that they spend more time on management activities than on leadership activities, although they would prefer the reverse. Future research is needed to examine how HIM leadership can be practiced more consistently in the workplace across different HIM functions. PMID:27134609

  9. Health Information Management Leaders and the Practice of Leadership through the Lens of Bowen Theory.

    Science.gov (United States)

    Sheridan, Patty Thierry; Watzlaf, Valerie; Fox, Leslie Ann

    2016-01-01

    Even though leadership is one of the most examined topics in the organizational literature, its application in the field of health information management (HIM) has not been studied extensively. This descriptive, mixed-methodology study examined HIM leadership through the lens of Bowen theory. The researchers conducted surveys of HIM directors and managers, administrators and colleagues of HIM leaders, and HIM staff using focus groups, observations of meetings, and face-to-face interviews. Results showed that HIM leaders are valued for HIM expertise in electronic health records, privacy, security, and coding; for being the center or heart of the organization; and for commonly valued leadership behaviors and skills including dependability, strategic planning, project management, listening ability, and fairness. Leadership was seen as a reciprocal process, and a team approach was preferred. Good communication, education, and training on HIM topics were also valued. However, HIM leaders believed that they spend more time on management activities than on leadership activities, although they would prefer the reverse. Future research is needed to examine how HIM leadership can be practiced more consistently in the workplace across different HIM functions.

  10. Australia's southern margin: a product of oblique extension

    Science.gov (United States)

    Willcox, J. B.; Stagg, H. M. J.

    1990-02-01

    Recently developed detachment models of continental margin formation interpret the southern margin of Australia to have formed when the lower-plate Australian margin was pulled out from beneath the upper-plate Antarctic margin. Data now available and summarised in this paper, point very strongly to a generally NW-SE direction of initial continental extension for the southern margin, in contrast to the widely held picture of simple N-S rifting. The evidence for this extension direction comes from the analysis of deep Seismic data acquired by the Bureau of Mineral Resources in 1986 in the central Great Australian Bight (GAB), the gravity field of the GAB, Seismic and magnetic basement structures in the Eyre Sub-basin, Polda Trough, Ceduna Depocentre and Duntroon Basin and from the analysis of the magnetic seafloor spreading anomalies produced during the slow first phase of drifting between Australia and Antarctica. Further, it is now believed that the formation of the southern margin of Australia can be described in terms of three phases of continental extension (El to E3) and two phases of drifting (D1 and D2). In summary, these phases were as follows. E1: approximately 300 km of Late Jurassic (?or older) to Early Cretaceous NW-SE-oriented extension in the GAB, with strike-slip motion in the nascent Otway Basin and along the Tasmanian margin. E2: 120 km of Early Cretaceous NNE-SSW-oriented extension which formed the basins of southeastern Australia (Otway, Bass, Gippsland) and which probably produced a structural overprinting in the GAB Basin. E3/D1: minor continental extension and the first 500 km of slow drift between Australia and Antarctica on an azimuth of 165°; wrenching on the Tasmanian margin. D2: 2600 km of fast drifting between Australia and Antarctica on a N-S azimuth.

  11. Community Music in Australia

    Science.gov (United States)

    Harrison, Gillian

    2010-01-01

    This paper presents a historical perspective to the development of community music in Australia. Finding political support in Australia's progressive arts policies of the late 1970s, community music is discussed as embracing the principles of access and equity and supporting the development of musical skills in the context of social change and…

  12. Wine Tourism in Australia

    Institute of Scientific and Technical Information of China (English)

    曾真

    2015-01-01

    1.Introduction Wine tourism is now recognised as a growing subset of special interest tourism all over the world.It is an increasingly important tourism component for many wine producing regions(M.A.O’Neill&Palmer;,2004).Australia has recently become a large wine producing country.Therefore,wine tourism has emerged as a strong and growing area in Australia.The

  13. 1例Bowen's病复发患者外阴切除术的护理%Nursing Care of A Patient with Recurrent Bowen's Disease Receiving Simple Vulvectomy

    Institute of Scientific and Technical Information of China (English)

    沈朝萍

    2006-01-01

    对1例Bowen's病复发患者行外阴切除术,术后6 d切口一期愈合,住院21 d康复出院,随访1年,无复发.提出术前做好心理护理、术前准备及外阴清洗;术后密切观察病情变化,加强外阴护理及出院指导,可提高手术治疗效果,避免复发.

  14. The Rising Cost of Higher Education: Charles Eliot's "Free Money" Strategy and the Beginning of Howard Bowen's "Revenue Theory of Cost," 1869-1979

    Science.gov (United States)

    Kimball, Bruce A.

    2014-01-01

    In order to explain the rising cost of higher education, economist Howard Bowen in 1980 proposed his "famous law" of institutional finance. Bowen based his "revenue theory of cost" on a study of aggregate quantitative data extending from 1929 to 1979. Neither he nor subsequent economists asked whether or how that…

  15. Diagnóstico de fluorescencia e inmunohistoquímico en la enfermedad de Bowen tratada con terapia fotodinámica

    OpenAIRE

    Truchuelo Díez, María Teresa

    2014-01-01

    Introducción: La enfermedad de Bowen (EB), también conocida como carcinoma de Bowen o carcinoma escamoso in situ, es un tipo de cáncer cutáneo no melanoma (CCNM) que afecta tanto a piel como mucosas y presenta potencial de progresión a carcinoma escamoso invasivo. Por tanto un diagnóstico y tratamiento precoz de esta entidad supone un gran beneficio para el paciente. Varios estudios han demostrado la eficacia y buena respuesta cosmética de la terapia fotodinámica (TFD) en el tratamiento de e...

  16. Limnological Conditions in Lake William C. Bowen and Municipal Reservoir #1, Spartanburg County, South Carolina, August to September 2005, May 2006, and October 2006

    Science.gov (United States)

    Journey, Celeste A.; Abrahamsen, Thomas A.

    2008-01-01

    The U.S. Geological Survey, in cooperation with the Spartanburg Water System, conducted three spatial surveys of the limnological conditions in Lake William C. Bowen (Lake Bowen) and Municipal Reservoir #1 (Reservoir #1), Spartanburg County, South Carolina, during August to September 2005, May 2006, and October 2006. The surveys were conducted to identify spatial distribution and concentrations of geosmin and 2-methylisoborneol, common trophic state indicators (nutrients, transparency, and chlorophyll a), algal community structure, and stratification of the water column at the time of sampling. Screening tools such as the Carlson trophic state index, total nitrogen to total phosphorus ratios, and relative thermal resistance to mixing were used to help compare data among sites and among seasons. Water-column samples were collected at two depths at each selected site: a near-surface sample collected above a 1-meter depth and a lake-bottom sample collected at a depth of 2.5 to 7 meters, depending on the depth at the site. The degree of stratification of the water column was demonstrated by temperature-depth profiles and computed relative thermal resistance to mixing. Seasonal occurrence of thermal stratification (August to September 2005; May 2006) and de-stratification (October 2006) was evident in the depth profiles of water temperature in Lake Bowen. The most stable water-column (highest relative thermal resistance to mixing) conditions occurred in Lake Bowen during the August to September 2005 survey. The least stable water-column (destratified) conditions occurred in Lake Bowen during the October 2006 survey and Reservoir #1 during all three surveys. Changes with depth in dissolved oxygen (decreased with depth to near anoxic conditions in the hypolimnion), pH (decreased with depth), and specific conductance (increased with depth) along with thermal stratification indicated Lake Bowen was exhibiting characteristics common to both mesotrophic and eutrophic

  17. A century scale human-induced hydrological and ecological changes of wetlands of two large river basins in Australia (Murray) and China (Yangtze): development of an adaptive water resource management framework

    Science.gov (United States)

    Kattel, G. R.; Dong, X.; Yang, X.

    2015-08-01

    Recently, the provision of food and water resources of two of the world's large river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back to past centuries, from wetlands of these river basins reveal that rapid, basin-wide development has reduced resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. In particular, large-scale human disturbance to river systems, due to river regulation during the mid-20th century, has transformed the hydrology of rivers and wetlands, causing widespread disturbance to aquatic biological communities. Historical changes of cladoceran zooplankton (water fleas) were used to assess the hydrology and ecology of three Murray and Yangtze River wetlands over the past century. Subfossil assemblages of cladocerans retrieved from sediment cores (94, 45 and 65 cm) of three wetlands: Kings Billabong (Murray), Zhangdu and Liangzi Lakes (Yangtze) strongly responded to hydrological changes of the river after the mid-20th century. River regulation caused by construction of dams and weirs, and river channel modifications has led to hydrological alterations. The hydrological disturbances were either: (1) a prolonged inundation of wetlands, or (2) reduced river flow, which caused variability in wetland depth. These phenomena subsequently transformed the natural wetland habitats, leading to a switch in cladoceran assemblages preferring poor water quality and eutrophication. An adaptive water resource management framework for both of these river basins has been proposed to restore or optimize the conditions of wetland ecosystems impacted by 20th century human disturbance and climate change.

  18. Water Recycling in Australia

    Directory of Open Access Journals (Sweden)

    Ross Young

    2011-09-01

    Full Text Available Australia is the driest inhabited continent on earth and, more importantly, experiences the most variable rainfall of all the continents on our planet. The vast majority of Australians live in large cities on the coast. Because wastewater treatments plants were all located near the coast, it was thought that large scale recycling would be problematic given the cost of infrastructure and pumping required to establish recycled water schemes. This all changed when Australia experienced a decade of record low rainfall and water utilities were given aggressive targets to increase the volume of water recycled. This resulted in recycled water being accepted as a legitimate source of water for non-drinking purposes in a diversified portfolio of water sources to mitigate climate risk. To ensure community support for recycled water, Australia lead the world in developing national guidelines for the various uses of recycled water to ensure the protection of public health and the environment. Australia now provides a great case study of the developments in maximizing water recycling opportunities from policy, regulatory and technological perspectives. This paper explores the evolution in thinking and how approaches to wastewater reuse has changed over the past 40 years from an effluent disposal issue to one of recognizing wastewater as a legitimate and valuable resource. Despite recycled water being a popular choice and being broadly embraced, the concept of indirect potable reuse schemes have lacked community and political support across Australia to date.

  19. PERMIAN STRATIGRAPHY, SEDIMENTARY ENVIRONMENTS AND BASIN EVOLUTION OF SOUTHERN SYDNEY BASIN IN EASTERN AUSTRALIA%东澳大利亚悉尼盆地南部二叠纪的地层、沉积环境与盆地演化

    Institute of Scientific and Technical Information of China (English)

    杜远生; GuangRSHI

    2003-01-01

    晚石炭世末期-三叠纪东澳大利亚的鲍恩-冈尼达-悉尼(Bowen- Gunnedah-Sydney)盆地系是位于拉克伦(Lachlan)褶皱带和新英格兰(New England)褶皱带之间的一个长条形的构造盆地.从北部的冈尼达(Gunnedah)到南部的巴特曼斯(Batemans)湾,悉尼盆地是鲍恩-冈尼达-悉尼盆地系南端的一个次级盆地.悉尼盆地的二叠系包括河流、三角洲、滨浅海沉积岩和火山岩地层.悉尼盆地的西南部二叠系不整合覆盖于变形变质的拉克伦褶皱带之上.二叠系由下部的塔拉特郎群(Tallaterang Group)、中部的肖尔黑文群(Shoalhaven Group)和上部的伊勒瓦拉煤系(Illawarra Coal Measures)组成.从晚石炭世末到中三叠世悉尼盆地经历了弧后扩张到典型的前陆盆地的不同阶段:弧后扩张阶段、被动热沉降阶段和挤压挠曲负载阶段.

  20. Field evaluation of polymer capacitive humidity sensors for Bowen ratio energy balance flux measurements.

    Science.gov (United States)

    Savage, Michael J

    2010-01-01

    The possibility of reliable, reasonably accurate and relatively inexpensive estimates of sensible heat and latent energy fluxes was investigated using a commercial combination thin-film polymer capacitive relative humidity and adjacent temperature sensor instrument. Long-term and unattended water vapour pressure profile difference measurements using low-power combination instruments were compared with those from a cooled dewpoint mirror hygrometer, the latter often used with Bowen ratio energy balance (BREB) systems. An error analysis, based on instrument relative humidity and temperature errors, was applied for various capacitive humidity instrument models. The main disadvantage of a combination capacitive humidity instrument is that two measurements, relative humidity and temperature, are required for estimation of water vapour pressure as opposed to one for a dewpoint hygrometer. In a laboratory experiment using an automated procedure, water vapour pressure differences generated using a reference dewpoint generator were measured using a commercial model (Dew-10) dewpoint hygrometer and a combination capacitive humidity instrument. The laboratory measurement comparisons showed that, potentially, an inexpensive model combination capacitive humidity instrument (CS500 or HMP50), or for improved results a slightly more expensive model (HMP35C or HMP45C), could substitute for the more expensive dewpoint hygrometer. In a field study, in a mesic grassland, the water vapour pressure measurement noise for the combination capacitive humidity instruments was greater than that for the dewpoint hygrometer. The average water vapour pressure profile difference measured using a HMP45C was highly correlated with that from a dewpoint hygrometer with a slope less than unity. Water vapour pressure measurements using the capacitive humidity instruments were not as accurate, compared to those obtained using a dewpoint hygrometer, but the resolution magnitudes for the profile

  1. Field Evaluation of Polymer Capacitive Humidity Sensors for Bowen Ratio Energy Balance Flux Measurements

    Directory of Open Access Journals (Sweden)

    Michael J. Savage

    2010-08-01

    Full Text Available The possibility of reliable, reasonably accurate and relatively inexpensive estimates of sensible heat and latent energy fluxes was investigated using a commercial combination thin-film polymer capacitive relative humidity and adjacent temperature sensor instrument. Long-term and unattended water vapour pressure profile difference measurements using low-power combination instruments were compared with those from a cooled dewpoint mirror hygrometer, the latter often used with Bowen ratio energy balance (BREB systems. An error analysis, based on instrument relative humidity and temperature errors, was applied for various capacitive humidity instrument models. The main disadvantage of a combination capacitive humidity instrument is that two measurements, relative humidity and temperature, are required for estimation of water vapour pressure as opposed to one for a dewpoint hygrometer. In a laboratory experiment using an automated procedure, water vapour pressure differences generated using a reference dewpoint generator were measured using a commercial model (Dew-10 dewpoint hygrometer and a combination capacitive humidity instrument. The laboratory measurement comparisons showed that, potentially, an inexpensive model combination capacitive humidity instrument (CS500 or HMP50, or for improved results a slightly more expensive model (HMP35C or HMP45C, could substitute for the more expensive dewpoint hygrometer. In a field study, in a mesic grassland, the water vapour pressure measurement noise for the combination capacitive humidity instruments was greater than that for the dewpoint hygrometer. The average water vapour pressure profile difference measured using a HMP45C was highly correlated with that from a dewpoint hygrometer with a slope less than unity. Water vapour pressure measurements using the capacitive humidity instruments were not as accurate, compared to those obtained using a dewpoint hygrometer, but the resolution magnitudes for the

  2. Why Study in Australia?

    Institute of Scientific and Technical Information of China (English)

    丁丽丽

    2014-01-01

    Going overseas to pursue further studies is even more generalized in recent years. Students are open to a variety of op-tions to decide which country to go and which university to choose. Why wouldn’t you want to study with some of the best minds in the world? Australia is a leading global education power, with world’s best educators and facilities. It also provides both local and international students with a variety of quality study options. This essay presents some of the important reasons why in-ternational students should study in Australia in regard to education quality, affordable fees, government support, multiple cultures and immigration policies.

  3. Healthcare in Australia.

    Science.gov (United States)

    Dalton-Brown, Sally

    2016-07-01

    No single issue has dominated health practitioners' ethical debates in 2014 in Australia, but a controversial decision on gene patenting and the media focus on "Dr. Death," euthanasia campaigner Dr. Philip Nitschke, have given new life to these two familiar (and global) debates. Currently a dying with dignity bill, drafted by the Australian Green Party, is under examination. The Senate inquiry into the bill received more than 663 submissions, with 57% opposed and 43% in support of the bill, which has now been referred to a Senate committee. Will this be another of Australia's failed attempts to legalize euthanasia? The trial of Dr. Nitschke begins on November 10, 2014. PMID:27348826

  4. Exploration Potential in Eastern Sea Area of Great Australian Bight Basin, Australia%澳大利亚大澳湾盆地东部海域勘探潜力

    Institute of Scientific and Technical Information of China (English)

    于圣杰; 杨松岭; 许晓明; 周浩玮

    2015-01-01

    澳大利亚南缘大澳湾盆地为陆相裂谷与海相被动大陆边缘的叠合盆地,经历了由中晚侏罗世至早白垩世的裂陷期、早白垩世到晚白垩世桑托尼期的过渡期、以及其后的漂移期共三期构造演化。盆地东部海域发育五套烃源岩(岩相主要为白垩系湖相泥岩、三角洲相煤系和海相泥岩)和四套储盖组合,形成了四套成藏组合。 Ceduna坳陷的Ham-merhead群三角洲前缘砂岩储层与前三角洲泥岩可形成自储自盖组合,是有利的勘探区带。%Great Australian Bight Basin is a superimposed basin, which evolved from J2-K1 rifting period, through K1-2 transitional period to K2-Q drifting period. Five sets of source rocks are distinguished in the eastern sea area of basin. These source rocks commonly are Cretaceous lacustrine mudstones, deltaic coal-measures and marine mudstones in lithology. It is shown that four sets of reservoir-cap assemblages and four associated plays develop also in the eastern sea area. The plays are Lower Cretaceous Bronze Whaler Group play and Upper Cretaceous White Pointer Group, Tiger Group and Hammerhead Group plays, in which the Upper Cretaceous Hammerhead play is regarded as the best potential zone for exploration in offshore Ceduna Depression because the Hammerhead delta front sandstone is identified as a good reservoir and the Hammerhead prodeltaic mudstone as a good source rock.

  5. Squamous Cell Carcinoma and Multiple Bowen's Disease in a Patient with a History of Consumption of Traditional Chinese Herbal Balls

    Directory of Open Access Journals (Sweden)

    Joon Seok

    2015-07-01

    Full Text Available Arsenic has been classified as a class I human carcinogen, meaning that there is sufficient evidence of carcinogenicity to humans. Arsenic, however, remains a common contaminant in a number of traditional Chinese herbal balls. A 64-year-old man presented with an erythematous erosive patch on the left palm, multiple yellowish scaly patches on the right palm and an erythematous hyperkeratotic patch with bleeding on the left foot dorsum. He also had similar skin lesions on the back and buttock. He had a past medical history of chronic exposure to arsenic through consumption of traditional Chinese herbal balls. Skin biopsy revealed Bowen's disease on the left palm and squamous cell carcinoma on left foot dorsum. We report this case to emphasize that we should investigate patient's history thoroughly, including the use of Chinese herbal balls to find out arsenicism.

  6. Distribution of protoporphyrin IX in Bowen's disease and basal cell carcinomas treated with topical 5-aminolaevulinic acid

    Science.gov (United States)

    Roberts, David J.; Stables, G. I.; Ash, D. V.; Brown, Stanley B.

    1995-03-01

    We have used ultra-low light level fluorescence microscopy to examine the suggestion that the relatively poor response of human basal cell carcinomas (BCC) to topical 5-aminolaevulinic acid (ALA)-based photodynamic therapy (PDT) arises from limited drug penetration into the lesion. The distribution of ALA-induced protoporphyrin IX (PpIX) in human BCC and Bowen's disease was examined and, in almost all cases, was found to be most intense in those regions of tumor immediately adjacent to the dermis. This distribution was independent of tumor type, and did not appear to be affected by tumor depth in the skin. It is suggested that ALA penetration may not limit the efficacy of ALA-PDT in the treatment of BCC. Failure of superficial ALA-based PDT in basal cell carcinoma may, instead, be related to the histological structure of this type of lesion.

  7. Classification in Australia.

    Science.gov (United States)

    McKinlay, John

    Despite some inroads by the Library of Congress Classification and short-lived experimentation with Universal Decimal Classification and Bliss Classification, Dewey Decimal Classification, with its ability in recent editions to be hospitable to local needs, remains the most widely used classification system in Australia. Although supplemented at…

  8. Australia in the Pacific.

    Science.gov (United States)

    Kennedy, Kerry; Welch, Ian

    1988-01-01

    Discusses Australia's growth since European settlement and its development into a major world trader in industrial and high technology raw materials. Examines the country's expanding relations with New Zealand and other Pacific states which is the outgrowth of the realization that all will gain from greater international cooperation. (GEA)

  9. Immigrant Teachers in Australia

    Directory of Open Access Journals (Sweden)

    Jock Collins

    2012-11-01

    Full Text Available One of the features of contemporary society is the increasing global mobility of professionals. While the education industry is a key site of the demand for contemporary global professional migration, little attention has been given to the global circulation of education professionals. Over past decades, immigrant teachers have been an important component of skilled and professional immigration into Australia, there is no comprehensive contemporary national study of the experiences of immigrant teachers in Australia. This article aims to fill this gap and to answer questions about their decision to move to Australia, their experience with Australian Education Departments in getting appointed to a school, their experiences as teachers in the classroom and in their new Australian community. It draws on primary data sources - in the form of a survey of 269 immigrant teachers in schools in NSW, SA and WA conducted in 2008-9 - and secondary sources - in the form of the 2006 national census and Longitudinal Survey of Immigrants in Australia – to provide insights into immigrant teachers in Australian schools, adding also to our understanding of Australia’s contemporary immigration experience.

  10. Creating White Australia

    DEFF Research Database (Denmark)

    McLisky, Claire Louise; Carey, Jane

    Vedtagelsen af White Australien som regeringens politik i 1901 viser, at hvidheden var afgørende for den måde, hvorpå den nye nation i Australien blev konstitueret. Og alligevel har historikere i vid udstrækning overset hvidhed i deres studier af Australiens race fortid. 'Creating White Australia...

  11. My Trip To Australia

    Institute of Scientific and Technical Information of China (English)

    张宇

    2004-01-01

    During this winter holiday,I paid a visit to a foreign country, Austrilia.When people had a cold winter here,Ihad a hot summer there. Australia has many places to visit,just like the Olympic Village,the Opera House,

  12. Australia: a full house.

    Science.gov (United States)

    Short, R

    1994-01-01

    Australia had a population of 17.6 million in 1991. In 1992, Australia's population grew at the rate of 1.06%, 0.8% due to natural increase and 0.26% from immigration. The recent Australian Bureau of Statistics Report estimates that it will grow to 18.9 million by the end of the century and 23.1 million by 2025, assuming fertility remains at current levels and net migration stabilizes at 70,000 per annum from the year 2000. The World Bank estimates that Australia's population will stabilize at 25 million some time in the future. Since Australia's politicians and economists fail to understand that the country already has a large enough population, no national population policy has been declared. The Department of Immigration and Ethnic Affairs, responsible for all population issues, gives no thought to the long-term environmental consequences of the rapidly growing population and determines the annual migrant intake simply on the basis of the nation's economic needs, demands from new immigrants for admission of their next of kin, and humanitarian considerations with regard to refugees. Population growth in Australia needs to be checked as soon as possible. Reducing the annual migrant intake to below 50,000, Australia could achieve a stable population of approximately 23 million by 2040; the annual intake of 150,000 immigrants will grow the population to 37 million. The total fertility rate (TFR) has been below replacement level since 1976, but the population's skewed age distribution will cause it to continue to grow through natural increase at the current rate of approximately 0.8% per year for some time to come. Improving educational opportunities for women and ensuring that all have ready access to modern contraception could help produce a further decline in TFR. Moreover, education about contraception must be made a part of every school curriculum. Steps taken now may avert any future flood of millions of ecological refugees from Southeast Asia, particularly

  13. Nucleopolyhedrovirus Introduction in Australia

    Institute of Scientific and Technical Information of China (English)

    Patrick Buerger; Caroline Hauxwell; David Murray

    2007-01-01

    Nucleopolyhedrovirus (NPV) has become an integral part of integrated pest management (IPM) in many Australian agricultural and horticultural crops. This is the culmination of years of work conducted by researchers at the Queensland Department of Primary Industries and Fisheries (QDPI&F) and Ag Biotech Australia Pty Ltd. In the early 1970's researchers at QDPI&F identified and isolated a virus in Helicoverpa armigera populations in the field. This NPV was extensively studied and shown to be highly specific to Helicoverpa and Heliothis species. Further work showed that when used appropriately the virus could be used effectively to manage these insects in crops such as sorghum, cotton, chickpea and sweet corn. A similar virus was first commercially produced in the USA in the 1970's. This product, Elcar(R), was introduced into Australia in the late 1970's by Shell Chemicals with limited success. A major factor contributing to the poor adoption of Elcar was the concurrent enormous success of the synthetic pyrethroids. The importance of integrated pest management was probably also not widely accepted at that time. Gradual development of insect resistance to synthetic pyrethroids and other synthetic insecticides in Australia and the increased awareness of the importance of IPM meant that researchers once again turned their attentions to environmentally friendly pest management tools such NPV and beneficial insects. In the 1990's a company called Rhone-Poulenc registered an NPV for use in Australian sorghum, chickpea and cotton. This product, Gemstar(R), was imported from the USA. In 2000 Ag Biotech Australia established an in-vivo production facility in Australia to produce commercial volumes of a product similar to the imported product. This product was branded, ViVUS(R), and was first registered and sold commercially in Australia in 2003. The initial production of ViVUS used a virus identical to the American product but replicating it in an Australian Helicoverpa

  14. Pleistocene Paleoart of Australia

    Directory of Open Access Journals (Sweden)

    Robert G. Bednarik

    2014-02-01

    Full Text Available Pleistocene rock art is abundant in Australia, but has so far received only limited attention. Instead there has been a trend, begun over a century ago, to search for presumed depictions of extinct megafauna and the tracks of such species. All these notions have been discredited, however, and the current evidence suggests that figurative depiction was introduced only during the Holocene, never reaching Tasmania. Nevertheless, some Australian rock art has been attributed to the Pleistocene by direct dating methods, and its nature implies that a significant portion of the surviving corpus of rock art may also be of such age. In particular much of Australian cave art is of the Ice Age, or appears to be so, and any heavily weathered or patinated petroglyphs on particularly hard rocks are good candidates for Pleistocene antiquity. On the other hand, there is very limited evidence of mobiliary paleoart of such age in Australia.

  15. Melville Island, Australia

    Science.gov (United States)

    1992-01-01

    Melville Island, just off the coast of Darwin, Northern Territory, Australia (11.5S, 131.0E) is a sparsely inhabited tropical island with heavy woodland concentrations. The widespread and prominant smoke plumes were most likely set to renew pasture under open canopy woodland. Soil erosion is almost non- existant as can be seen by the clear and clean river flow. The offshore sediments are coastal current borne deposits from King Sound to the west.

  16. Australia; Background Material

    OpenAIRE

    International Monetary Fund

    1995-01-01

    This paper describes the developments in the Australian labor market during the 1990s. In 1994, a number of new labor market programs were launched, directed especially at the long-term unemployed, and a further step was taken in the evolutionary reform of the industrial relations system. The paper reviews developments in employment, wages, and productivity in Australia that formed the background to these policy initiatives. It also examines the conduct of fiscal policy at the Commonwealth an...

  17. Australia; Selected Issues

    OpenAIRE

    International Monetary Fund

    1997-01-01

    This Selected Issues paper examines the role that government policy in Australia plays in influencing household saving, both directly through its own saving and the structure of the tax, social security and welfare systems, and indirectly through the influence of the policy environment on factors that affect saving such as economic growth. The determinants of household saving in a sample of 21 OECD (Organization for Economic Cooperation and Development) countries are also investigated, using ...

  18. Retirement Saving in Australia

    OpenAIRE

    Garry Barrett; Yi-Ping Tseng

    2007-01-01

    Australia’s retirement income system has several distinctive features – most notably a policy of government mandated private saving and a means-tested Age Pension – which have gained increasing international attention. This paper provides an overview of the institutional features of the retirement income system in Australia, including details of the development and operation of the policy of forced retirement saving. The role of the different tiers of system in accounting for the income of th...

  19. Cash Use in Australia

    OpenAIRE

    Eden Hatzvi; Jessica Meredith; Rose Kenney

    2014-01-01

    This article uses results from the 2013 Survey of Consumers’ Use of Payment Methods and regression analysis to examine trends in cash use in Australia. The results show that cash remained the most common form of payment, though its use relative to other payment methods has declined over recent years. Older participants were more likely to use cash than younger participants and all participants were more likely to use cash for low-value transactions relative to other payment methods. In additi...

  20. Immigrant Teachers in Australia

    OpenAIRE

    Jock Collins; Carol Reid

    2012-01-01

    One of the features of contemporary society is the increasing global mobility of professionals. While the education industry is a key site of the demand for contemporary global professional migration, little attention has been given to the global circulation of education professionals. Over past decades, immigrant teachers have been an important component of skilled and professional immigration into Australia, there is no comprehensive contemporary national study of the experiences of immigra...

  1. Australia Online; Borderless University

    OpenAIRE

    Zeynep ERDINC

    2002-01-01

    Around the world distance education is playing an important roll in the education sector. Many countries are in the process of developing and improving their distance education projects. One of the projects being online education has improved information delivery and development op International education. Distance education has been available in Australia for many years. More than 30 higher education institutions within the country now use the program. The purpose of the development of di...

  2. Australia's atomic conspiracy theory

    International Nuclear Information System (INIS)

    The author questions claims by the Newcastle University historian Wayne Reynolds in his book 'Australia's Bid for the Bomb', that the impetus behind the Snowy Mountains Scheme was to provide a secure source of power for the enrichment of uranium and production of heavy water so that Australia could produce its own atomic bombs. Reynolds also argued that the Australian Atomic Energy Commission (AAEC) was set up so that Australia had a trained scientific workforce to produce plutonium for the bomb. While the book is well researched, Reynolds does not seem to understand the principles of basic science and engineering. After the Second World War, a manufacturing and industrial base with a skilled and trained workforce was needed so it could be converted to war or defence manufacturing when the need arose. This new manufacturing community would require electrical power to sustain it. Hydroelectricity and atomic energy could help provide these needs. Even though war was still raging, Prime Minister John Curtin looked ahead and set up a Department of Post-War Reconstruction. It was through this department that the Snowy Mountains Scheme would be established. Curtin did not live to see this. He died in 1945 but his successor, Ben Chifley, continued the vision. The author believes, an understanding of the science behind these developments and an appreciation of how how humans interact with each others when it comes to getting something they want is likely to give a more balanced view of the past

  3. Australia's energy profile

    International Nuclear Information System (INIS)

    Australian Bureau of Agricultural and Resource Economics (ABARE)'s biennial fuel and electricity survey provides a comprehensive database with which is possible to examine recent trends and developments in Australia's energy market. Some key development are outlined in this article. While energy consumption in Australia has been increasing steadily since 1973-74, substantial changes have occurred 'behind the scenes' in terms of the states and sectors in which energy is consumed and the overall fuel mix. Historically, the south-eastern states of New South Wales and Victoria have accounted for the largest shares of total energy consumption In recent years, however, the dominance of New South Wales and Victoria (and particularly New South Wales) has come under pressure from the states of Queensland. Western Australia, and to a lesser extent, the Northern Territory. Each of these states has experienced rapid growth in energy consumption, due mainly to a number of strongly growing energy intensive industries, particularly in the mining and minerals processing sectors. High economic and population growth over this period were also important factors. An increase in the share of natural gas- and a corresponding decline in the share of crude oil - is the most evident change to have occurred in the fuel mix since 1973-1974. However, since 1993, the trend has changed, the share of coal (and particularly brown coal) increased strongly, making it the primary fuel source for thermal electricity generation. This recent shift has been driven by developments in Queensland and Victoria

  4. Dynamic Stress Modeling Applied to Dynamic Triggering Seismicity in Australia and Utah

    Science.gov (United States)

    Gonzalez-Huizar, H.; Velasco, A. A.; Pankow, K. L.

    2009-12-01

    Static stress changes can trigger nearby earthquakes that occur within a few fault lengths from the causative event. Transient stresses caused by the passage of surface waves commonly trigger events at remote distances; yet, the processes and stresses necessary for remote triggering are poorly documented and not well understood. To understand the causative stresses and environments behind remote, or dynamic, triggering, we must decipher the stresses caused by the passage of the surface waves in relation to the local stress field and fault conditions where the triggered events occur. In this study, we model the change in the stress field that the passing of Rayleigh and Love waves cause on a fault plane of arbitrary orientation relative to the direction of propagation of the waves, and apply a Coulomb failure criteria to calculate the potential of these stress changes to trigger reverse, normal or strike-slip failure. We compare these model results with data from dynamically triggered earthquakes in both the Australian Bowen Basin and the Utah region. In the Bowen Basin, a region located at the margin of a stable continental craton and with little background seismicity our modeling shows that surface waves arriving at 45 degrees from the average local stress field are the most likely to trigger local seismicity, this is confirmed with our data analysis. In Utah, we model two events with known well-constrained, normal focal mechanisms; which allows a direct comparison of the normal and shear stress generated by the triggering events. Our modeling shows that Love waves promoted failure on these normal faults, and allows us to discriminate between the axial planes of a first motion focal mechanism of a dynamically triggered event.

  5. ENFERMEDAD DE BOWEN TRATADA CON CRIOTERAPIA COMBINADA CON IMIQUIMOD TOPICO AL 5%. TRATAMIENTO ALTERNATIVO A LA CIRUGÍA EN PACIENTES MAYORES CON CO-MORBILIDADES

    OpenAIRE

    Lezcano Liz; Di Martino Ortiz Beatriz; Rodriguez Masi Mirtha; Knopfelmacher Oilda,; Bolla de Lezcano Lourdes

    2011-01-01

    Bowen's disease (BD) is an in situ squamous cell carcinoma in which dysplastic changes occur throughout the full thickness of the epidermis. It usually affects fair-skinned people over 60 years. It is characterized by erythematous papules and plaques solitary or multiple, with a slow centrifugal growth. The differential diagnosis of BD should be established with chronic dermatoses such as psoriasis, chronic eczema, superficial basal cell carcinoma and Paget's disease of the skin. Only 5% of c...

  6. Electromagnetic induction in Australia

    Science.gov (United States)

    Lilley, F. E. M.

    Electromagnetic induction at the terrestrial surface is a general and ubiquitous process. This note, which covers research on the subject in Australia, reflects the writer's own interest and refers particularly to induction by natural source fields in the period range of 1 minute to 1 day.Such source fields arise external to Earth, in the ionosphere and beyond, in the magnetosphere. The process of electromagnetic induction by these fields involves the flow through Earth of tens of thousands of amperes, over scale lengths of thousands of kilometers.

  7. Application of LANDSAT Data for Field-Scale Comparisons and Basin-Scale Estimates of Evapotranspiration in the Wood River Valley, Upper Klamath Basin, Oregon.

    Science.gov (United States)

    Peterson, S. T.; Cuenca, R. H.

    2006-12-01

    30 meter resolution LANDSAT data were used to evaluate the effects of irrigation management decisions in the Wood River Valley, Upper Klamath Basin, Oregon. The Klamath Basin is well known as an over-allocated system that strains to provide adequate water for agriculture, recreational, and wildlife needs. In an effort to provide increased stream flows after the water shutoff to irrigators in 2001 and disastrous fish kills in 2002, a program was established with cooperative ranchers to withhold irrigation from their cattle pastures in the Wood River Valley, just above Upper Klamath Lake. From 2003 to 2006, ground-based measurements over one irrigated and one unirrigated pasture site were used to monitor the difference in evapotranspiration using the Bowen ratio energy balance method. These data sets represent point measurements of the response to irrigation, but do not allow for the spatial integration of effects of irrigated versus unirrigated lands. The SEBAL and later METRIC algorithms were developed to evaluate evapotranspiration on a field- or basin-wide scale using LANDSAT data. Four LANDSAT scenes of the Wood River basin during the 2004 growing season were evaluated using re-derived and updated METRIC algorithms. The Bowen ratio station micrometeorological data were utilized in the METRIC algorithms. Comparisons of METRIC algorithm output with ground-based data for all components of the energy balance, including net radiation, soil heat flux, sensible heat flux and evapotranspiration, were made for the four scenes. The excellent net radiation estimates, along with less accurate estimates of the other components, is demonstrated. The ability to integrate the effects of withholding irrigation on evapotranspiration and the water balance on irrigated and unirrigated lands within the basin is demonstrated. The results exhibit application of the METRIC algorithms to partition water balance components at the watershed scale.

  8. Long-term follow-up of metil aminolevulinate (MAL)-PDT in difficult-to-treat cutaneous Bowen's disease.

    Science.gov (United States)

    Cavicchini, Stefano; Serini, Stefano Maria; Fiorani, Roberta; Girgenti, Valentina; Ghislanzoni, Massimo; Sala, Francesco

    2011-08-01

    Bowen's disease (BD) is a form of intraepidermal squamous cell carcinoma, which is clinically characterized by gradually enlarging, well-demarcated erythematous plaques with irregular borders and surface crusting or scaling, affecting primarily the elderly. BD often presents with lesions difficult to treat with standard therapy as surgery, cryosurgery, or 5-fluorouracil (5-FU) for the risk of significantly poor cosmetic outcome, failure rate, and adverse events, related mainly to the age of the patients. Topical PDT with methyl aminolevulinate (MAL) represents a valid and approved therapy for BD lesions in many cases, especially for lesions located at poor healing sites or for large patches of disease, due to its high efficacy coupled with good tolerability and tissue-sparing attitude. In this study, we sought to investigate the efficacy, safety, and cosmetic outcome of MAL-PDT in a series of patients with BD lesions which were challenging to treat for clinical, surgical, and patient-related reasons, such as size of the lesion, difficult surgical approach for anatomical sites, or age of patients and request of the best cosmetic result. We also performed a long-term follow-up to assess recurrence rates and eventual late-onset adverse events.

  9. Experiencias en Western Australia

    Directory of Open Access Journals (Sweden)

    M.A. Pérez Fernández

    2008-01-01

    Full Text Available Décadas de uso inadecuado de los recursos naturales en Australia han llevado a la extinción de numerosas especies autóctonas. Aprendiendo de sus propios errores, se han inicido recientemente diferentes proyectos de conservación en los que participan diversos agentes interesados. La Región de los Central Ranges, en el Desierto de Gibson, pertenece al pueblo aborigen Ngaanyatjarra. En los años 90 se llevó a cabo una campaña de recolección de organismos, patrocinada por el Museo de Western Australia y el Departamento de Conservación Ambiental (DEC, en la que participaron miembros de la comunidad Ngaanyatjarra, conocedores y cuidadores del territorio. El resultado científico se tradujo en la identificación de dos nuevas especies, así como numerosas nuevas citas de plantas y animales para el territorio. La minería es una de las actividades más impactantes en Australia, pero la concienciación social ha llevado a que las compañías desarrollen importantes campañas de protección de especies. El mulgara (Dasycercus cristicaula ocupaba zonas que hoy en día se dedican a la minería, y de las que prácticamente ha desaparecido. Un programa de investigación financiado por la empresa Resolute Resources y dirigido por el Departamento de Conservación y Manejo del Territorio (CALM ha permitido identificar poblaciones de este marsupial carnívoro y diseñar un programa de manejo cuyo objetivo es evitar actuaciones incompatibles con su actividad biológica. El resultado más relevante en ambas iniciativas ha sido la colaboración entre diferentes agentes implicados, con intercambio de conocimientos y experiencias. Especialmente importante ha sido la posibilidad de diseñar planes de manejo y actuación sobre el territorio, orientados a la preservación de valores naturales y culturales antiguos.

  10. Australia's marine virtual laboratory

    Science.gov (United States)

    Proctor, Roger; Gillibrand, Philip; Oke, Peter; Rosebrock, Uwe

    2014-05-01

    In all modelling studies of realistic scenarios, a researcher has to go through a number of steps to set up a model in order to produce a model simulation of value. The steps are generally the same, independent of the modelling system chosen. These steps include determining the time and space scales and processes of the required simulation; obtaining data for the initial set up and for input during the simulation time; obtaining observation data for validation or data assimilation; implementing scripts to run the simulation(s); and running utilities or custom-built software to extract results. These steps are time consuming and resource hungry, and have to be done every time irrespective of the simulation - the more complex the processes, the more effort is required to set up the simulation. The Australian Marine Virtual Laboratory (MARVL) is a new development in modelling frameworks for researchers in Australia. MARVL uses the TRIKE framework, a java-based control system developed by CSIRO that allows a non-specialist user configure and run a model, to automate many of the modelling preparation steps needed to bring the researcher faster to the stage of simulation and analysis. The tool is seen as enhancing the efficiency of researchers and marine managers, and is being considered as an educational aid in teaching. In MARVL we are developing a web-based open source application which provides a number of model choices and provides search and recovery of relevant observations, allowing researchers to: a) efficiently configure a range of different community ocean and wave models for any region, for any historical time period, with model specifications of their choice, through a user-friendly web application, b) access data sets to force a model and nest a model into, c) discover and assemble ocean observations from the Australian Ocean Data Network (AODN, http://portal.aodn.org.au/webportal/) in a format that is suitable for model evaluation or data assimilation, and

  11. Satellite surveillance of evaporative depletion across the Indus Basin

    Science.gov (United States)

    Bastiaanssen, Wim G. M.; Ahmad, Mobin-Ud-Din; Chemin, Yann

    2002-12-01

    The irrigated Indus Basin in Pakistan has insufficient water resources to supply all its stakeholders. Information on evaporative depletion across the Basin is an important requirement if the water resources are to be managed efficiently. This paper presents the Surface Energy Balance Algorithm for Land (SEBAL) method used to compute actual evapotranspiration for large areas based on public domain National Oceanic and Atmospheric Administration (NOAA) satellite data. Computational procedures for retrieving actual evapotranspiration from satellites have been developed over the last 20 years. The current work is among the first applications used to estimate actual evapotranspiration on an annual scale across a vast river basin system with a minimum of ground data. Only sunshine duration and wind speed are required as input data for the remote sensing flux algorithm. The results were validated in the Indus Basin by comparing results from a field-scale transient moisture flow model, in situ Bowen ratio measurements, and residual water balance analyses for an area of 3 million ha. The accuracy of assessing time-integrated actual annual evapotranspiration varied from 0% to 10% on a field scale to 5% at the regional level. Spatiotemporal information on actual evapotranspiration helps to evaluate water distribution and water use between large irrigation project areas. Wide variations in evaporative depletion between project areas and crop types were found. Satellite-based measurements can provide such information and avoid the need to rely on field databases.

  12. Warragamba. Sydney, Australia

    Directory of Open Access Journals (Sweden)

    Seshadri, B.

    1959-02-01

    Full Text Available El pantano de Warragamba, cuyo objeto es el de producir energía hidroeléctrica en su primera fase de explotación y solamente agua potable cuando las necesidades de ésta así lo requieran, se haya situado en las proximidades de Sydney (Australia. Su extensa cuenca está constituida por una serie de ríos en cuyas cabeceras se han construido diques de retención, que no solamente almacenan grandes cantidades de agua, sino que sirven parcialmente para la regularización de caudales, función de gran interés en esta zona donde las avenidas, seguidas de extensas inundaciones, se hacen sentir con relativa frecuencia.

  13. The Continuing Evolution of Water Management in Australia

    Science.gov (United States)

    Udall, B.

    2011-12-01

    Since the early 1990s Australia has pursued a broad national agenda of water reform which includes full cost pricing, sufficient water for the environment, water conservation, irrigation infrastructure improvements, and clear delineation of roles and responsibilities of different water institutions among other reforms. A series of substantial changes to commonwealth and state law has resulted from these major initiatives. This reform effort was capped by groundbreaking commonwealth legislation in 2007 and 2008 that to large extent federalized the operation of the nation's largest river system, the Murray-Darling. A new basin wide authority, the MDBA, was created to manage the river via the concept of sustainable diversion limits (SDLs) to be promulgated through additional federal legislation. The October 2010 initial plan for these SDLs suggested cuts in use of up to 40% in the basin and was met with widespread opposition by irrigators. Subsequently, top leadership in the MDBA resigned, a number of parliamentary inquiries were begun, and the entire process has been delayed. How did Australia get to its current position with respect to water reform, and what is the likely outcome of the current delay? How has water management evolved in Australia over the last 20 years? What lessons exist for the Western United States?

  14. Application of detailed temperature profile measurements for improving data quality check by Bowen Ratio/Energy Balance method

    Science.gov (United States)

    Pozníková, Gabriela; Fischer, Milan; Orság, Matěj; Trnka, Miroslav; Žalud, Zdeněk

    2015-04-01

    Water plays a key role in the functionality and sustainability of the ecosystems. In the light of the predicted climate change research should be focused on the water cycle and its individual components. Apart from the runoff, the major component of the water balance which drives the water from the ecosystems is represented by the evapotranspiration (ET). One of the standard methods for measuring ET is Bowen Ratio/Energy Balance method (BREB). It is based on the assumption that the water vapour and heat are transported by identical eddies with equal efficiency. In fact, this basic premise is based on a more complicated Monin-Obukhov similarity theory that explains the relationship between the profiles of wind, temperature and water vapour in the surface layer of the atmosphere. When BREB method is used we assume that the profiles of temperature and air humidity are ideally logarithmic or at least consistent. However, as this method is usually based on the measurements of temperature and humidity in only two heights, it is difficult to verify this assumption. We therefore conducted a field experiment using 4m high measurement-mast with 20 thermocouples connected to data-logger for detailed measurement of air temperature profile above different covers, e.g. grassland, spring barley, poplar plantation. The main goal of our effort was to capture so called "kink" in the profile of the temperature and verify if the assumptions made by BREB hold under various weather conditions and over different canopies testing the basic requirements of the BREB method use. Finally we devised a technique improving data selection for subsequent ET calculation. This study was funded by project "Building up a multidisciplinary scientific team focused on drought" No. CZ.1.07/2.3.00/20.0248,PASED - project supported by Czech program KONTAKT II No. LH12037 "Development of models for assessment of abiotic stresses in selected bioenergy plants" and LD130030 project supporting COST action ES1106.

  15. A case of Bowen's disease presented as multiple cutaneous%多发性疣状鲍恩病

    Institute of Scientific and Technical Information of China (English)

    华夏; 姚明; 张谊芝

    2011-01-01

    A case of multiple circumscribed, cutaneous horn like Bowen s disease is reported. A 75-year-old female presented with black papular lesions on the left lap for more than 2 years. On physical examination, many black and verrucous lesions were densely distributed over the left lap, most of them were cutaneous horn-like, some merged into a mass with cauliflower-like top. Histopathology showed hyperkeratosis, acanthosis and papillomatosis. The epidermis was full of abnormal keratinocytes and many dyskeratotic cells. In addition to the large and hyperchromatic nuclei found in these atypical cells, vacuoles were observed in some cytoplasm. Abnormal karyomitosis was seen under high magnification.%报告1例表现为局限性多发性疣状鲍恩病.患者女,75 岁.左膝黑色丘疹2 年余.皮肤科检查:左膝多个密集分布的褐黑色皮角样皮损,部分融合成包块,顶端呈菜花状.组织病理检查示角化过度,棘层肥厚,伴乳头瘤样增生,表皮全层出现不典型角质形成细胞,可见角化不良细胞,细胞不典型,胞核大而深染,有的细胞质呈明显空泡状.镜下可见多个异常核分裂象.

  16. Intra-seasonal and Inter-annual variability of Bowen Ratio over rain-shadow region of North peninsular India

    Science.gov (United States)

    Morwal, S. B.; Narkhedkar, S. G.; Padmakumari, B.; Maheskumar, R. S.; Deshpande, C. G.; Kulkarni, J. R.

    2016-02-01

    Intra-seasonal and inter-annual variability of Bowen Ratio (BR) have been studied over the rain-shadow region of north peninsular India during summer monsoon season. Daily grid point data of latent heat flux (LHF), sensible heat flux (SHF) from NCEP/NCAR Reanalysis for the period 1970-2014 have been used to compute daily area-mean BR. Daily grid point rainfall data at a resolution of 0.25° × 0.25° from APHRODITE's Water Resources for the available period 1970-2007 have been used to study the association between rainfall and BR. The study revealed that BR rapidly decreases from 4.1 to 0.29 in the month of June and then remains nearly constant at the same value (≤0.1) in the rest of the season. High values of BR in the first half of June are indicative of intense thermals and convective clouds with higher bases. Low values of BR from July to September period are indicative of weak thermals and convective clouds with lower bases. Intra-seasonal and inter-annual variability of BR is found to be inversely related to precipitation over the region. BR analysis indicates that the land surface characteristics of the study region during July-September are similar to that over oceanic regions as far as intensity of thermals and associated cloud microphysical properties are concerned. Similar variation of BR is found in El Nino and La Nina years. During June, an increasing trend is observed in SHF and BR and decreasing trend in LHF from 1976 to 2014. Increasing trend in the SHF is statistically significant.

  17. Deliberate introduction of the European rabbit, Oryctolagus cuniculus, into Australia.

    Science.gov (United States)

    Fenner, F

    2010-04-01

    The European rabbit was brought to Australia as a companion animal by early settlers. It sometimes escaped, but failed to survive in the Australian bush. In 1879 wild rabbits were deliberately sent to Victoria to provide game for wealthy settlers to shoot. They soon spread all over Australia, except in the tropics, and became Australia's major animal pest. After careful testing in Australian wildlife and in humans, control by myxoma virus was introduced at various sites between 1937 and 1950, spreading all over the Murray-Darling Basin in 1950. Within one year mutations in the virus had led to slightly less virulence, and these continued for the next 50 years. In the early 21st Century testing viruses obtained from wild rabbits showed that the majority of these viruses were more virulent than the virus used to initiate the epidemic. In 1995 another virus specific for European rabbits, rabbit haemorrhagic disease virus, escaped from areas in which field trials were being carried out and spread around Australia. It was more successful than myxomatosis for rabbit control in arid regions. PMID:20617651

  18. Asian student migration to Australia.

    Science.gov (United States)

    Shu, J; Hawthorne, L

    1996-01-01

    "This paper presents an overview of Asian student migration to Australia, together with an analysis of political and educational aspects of the overseas student programme. It focuses on some significant consequences of this flow for Australia. The characteristics of key student groups are contrasted to provide some perspective of the diversity of historical and cultural backgrounds, with the source countries of Malaysia, Indonesia and PRC [China] selected as case studies. Since the issue of PRC students in Australia has attracted considerable public attention and policy consideration, particular focus is placed on their experience." (SUMMARY IN FRE AND SPA) PMID:12291796

  19. Energy budget measurements using eddy correlation and Bowen ratio techniques at the Kinosheo Lake tower site during the Northern Wetlands Study

    Science.gov (United States)

    Den Hartog, G.; Neumann, H. H.; King, K. M.; Chipanshi, A. C.

    1994-01-01

    Fluxes of heat and water vapor were measured on a 20-m tower at Kinosheo Lake in the Hudson Bay lowlands using eddy correlation and Bowen ratio energy balance techniques. The study period was June 25 to July 28, 1990. Measurements were made over a peat bog consisting of a mixture of sphagnum moss and lichen hummocks and black pools. About 200 m west of the tower were several shallow ponds. The hummocks had a dry, insulating surface and were underlain by an ice layer near 50 cm depth until mid-July. At the beginning of the period the black pools were covered with water, and although the free water gradually disappeared over the study period, they remained saturated to the end of July. The depth of peat near the tower was about 3 m. Despite the ice layer under the hummocks, their daytime surface temperatures were high, near 35 C, and after the middle of July, above 40 C. Inspection of temperature, precipitation, and radiation data showed that the midsummer period of 1990 was warmer, drier, and sunnier than usual at Moosonee and so by influence at Lake Kinosheo. When all the data were combined to yield average diurnal energy balance components, the eddy correlation fluxes accounted for 90% of the available energy. Latent heat flux averaged 46% of the total available energy and the sensible heat flux averaged 34%. Daytime Bowen ratios were near 1 for the experimental period, suggesting that the bog behaved more like a dryland than a wetland. Eddy correlation measurements of sensible heat and latent heat flux were less than those measured using the Bowen ratio energy balance technique, the average ratios being 0.81 and 0.86 respectively. These differences were possibly due to the difficulty in measuring energy balance components of net radiation and ground heat flux over the mosaic surface.

  20. Sustainability: Australia at the crossroads

    Science.gov (United States)

    Bodirsky, Benjamin L.; Popp, Alexander

    2015-11-01

    A modelling study argues that comprehensive policy change could limit Australia's environmental pollution while maintaining a materials-intensive path to economic growth. But other paths are worth considering. See Article p.49

  1. Australia's Next Top Fraction Model

    Science.gov (United States)

    Gould, Peter

    2013-01-01

    Peter Gould suggests Australia's next top fraction model should be a linear model rather than an area model. He provides a convincing argument and gives examples of ways to introduce a linear model in primary classrooms.

  2. Public Sector Governance in Australia

    OpenAIRE

    Edwards, Meredith; Halligan, John; Horrigan, Bryan; Nicoll, Geoffrey

    2012-01-01

    Australia lacks a scholarly book that covers recent developments in public sector governance in Australia and blends cross-disciplinary perspectives from law, management, public administration and public policy. The primary reason for writing this book is to fill the gap in the treatment of this subject, and to provide insights from empirical evidence and current practice. The book provides the first comprehensive theoretical and empirical work on governance in the Commonwealth public sec...

  3. Slovene migrant literature in Australia:

    OpenAIRE

    Maver, Igor

    2002-01-01

    This article on the literary creativity of Slovene migrants in Australia after the Second World War, including the most recent publications, discusses only the most artistically accomplished authors and addresses those works that have received the most enthusiastic reception by the critics and readers alike. Of course, those that are not mentioned are also important to the preservation of Slovene culture and identity among the Slovene migrants in Australia from a documentray, historical, or e...

  4. Commercial Higher Education in Australia

    OpenAIRE

    Sorin George Toma

    2005-01-01

    The education system in Australia represents an exemplification of the anglo-saxon education pattern. The system has three levels: primary, secondary and tertiary. After having graduated 13 years of primary and secondary school one can attend the tertiary level. Australia’s tertiary education sector comprises higher education and vocational education and training (VET). The first schools in Australia were set up by private individuals and Church organisations. The first Australian university ...

  5. p27及p57在皮肤鳞状细胞癌和Bowen病中的表达%Expression and clinical implication of p27 and p57 in cutaneous squamous cell carcinoma and Bowen's disease

    Institute of Scientific and Technical Information of China (English)

    Hong Liang; Jiawen Li; Dingdan Tian

    2008-01-01

    Objective: To investigate the expression and clinical significance of cyclin dependent kinase inhibitors p27 and p57 in cutaneous squamous cell carcinoma and Bowen's disease. Methods: The expression of p27 and p57 were evaluated in 10 normal skin tissues, 25 Bowen's disease (BD) and 30 cutaneous squamous cell carcinoma (SCC) with immunohistochemistrical staining. Results: The levels of p27 protein expression in SCC were dramatically lower than those in normal skin and BD (P<0.05). The levels of p57 protein expression in SCC were dramatically lower than those in normal skin and BD (P<0.05). There was a positive correlation between p27 and p57 (r=0.469, P<0.05). Conclusion: The decrease of p27 and skp2 may be used for considering the biological behavior of human cutaneous squamous cell carcinoma and Bowen'sdisease.

  6. Providing and financing aged care in Australia

    OpenAIRE

    Ergas H; Paolucci F.

    2011-01-01

    Henry Ergas1,2, Francesco Paolucci31University of Wollongong, Wollongong, NSW, Australia; 2Deloitte Australia, Brindabella Business Park, Canberra Airport, ACT, Australia; 3Australian Centre for Economic Research on Health, The Australian National University, Acton, Canberra, ACT, AustraliaAbstract: This article focuses on the provision and financing of aged care in Australia. Demand for aged care will increase substantially as a result of population aging, with the number of Australians aged...

  7. Neutron scattering in Australia

    International Nuclear Information System (INIS)

    Neutron scattering techniques have been part of the Australian scientific research community for the past three decades. The High Flux Australian Reactor (HIFAR) is a multi-use facility of modest performance that provides the only neutron source in the country suitable for neutron scattering. The limitations of HIFAR have been recognized and recently a Government initiated inquiry sought to evaluate the future needs of a neutron source. In essence, the inquiry suggested that a delay of several years would enable a number of key issues to be resolved, and therefore a more appropriate decision made. In the meantime, use of the present source is being optimized, and where necessary research is being undertaken at major overseas neutron facilities either on a formal or informal basis. Australia has, at present, a formal agreement with the Rutherford Appleton Laboratory (UK) for access to the spallation source ISIS. Various aspects of neutron scattering have been implemented on HIFAR, including investigations of the structure of biological relevant molecules. One aspect of these investigations will be presented. Preliminary results from a study of the interaction of the immunosuppressant drug, cyclosporin-A, with reconstituted membranes suggest that the hydrophobic drug interdigitated with lipid chains

  8. Neutron scattering in Australia

    Energy Technology Data Exchange (ETDEWEB)

    Knott, R.B. [Australian Nuclear Science and Technology Organisation, Menai (Australia)

    1994-12-31

    Neutron scattering techniques have been part of the Australian scientific research community for the past three decades. The High Flux Australian Reactor (HIFAR) is a multi-use facility of modest performance that provides the only neutron source in the country suitable for neutron scattering. The limitations of HIFAR have been recognized and recently a Government initiated inquiry sought to evaluate the future needs of a neutron source. In essence, the inquiry suggested that a delay of several years would enable a number of key issues to be resolved, and therefore a more appropriate decision made. In the meantime, use of the present source is being optimized, and where necessary research is being undertaken at major overseas neutron facilities either on a formal or informal basis. Australia has, at present, a formal agreement with the Rutherford Appleton Laboratory (UK) for access to the spallation source ISIS. Various aspects of neutron scattering have been implemented on HIFAR, including investigations of the structure of biological relevant molecules. One aspect of these investigations will be presented. Preliminary results from a study of the interaction of the immunosuppressant drug, cyclosporin-A, with reconstituted membranes suggest that the hydrophobic drug interdigitated with lipid chains.

  9. Indigenous actinorhizal plants of Australia

    Indian Academy of Sciences (India)

    Nishath K Ganguli; Ivan R Kennedy

    2013-11-01

    Indigenous species of actinorhizal plants of Casuarinaceae, Elaeagnaceae and Rhamnaceae are found in specific regions of Australia. Most of these plants belong to Casuarinaceae, the dominant actinorhizal family in Australia. Many of them have significant environmental and economical value. The other two families with their indigenous actinorhizal plants have only a minor presence in Australia. Most Australian actinorhizal plants have their native range only in Australia, whereas two of these plants are also found indigenously elsewhere. The nitrogen-fixing ability of these plants varies between species. This ability needs to be investigated in some of these plants. Casuarinas form a distinctive but declining part of the Australian landscape. Their potential has rarely been applied in forestry in Australia despite their well-known uses, which are being judiciously exploited elsewhere. To remedy this oversight, a programme has been proposed for increasing and improving casuarinas that would aid in greening more regions of Australia, increasing the soil fertility and the area of wild life habitat (including endangered species). Whether these improved clones would be productive with local strains of Frankia or they need an external inoculum of Frankia should be determined and the influence of mycorrhizal fungi on these clones also should be investigated.

  10. Bowen ratio/energy balance technique for estimating crop net CO2 assimilation, and comparison with a canopy chamber

    Science.gov (United States)

    Held, A. A.; Steduto, P.; Orgaz, F.; Matista, A.; Hsiao, T. C.

    1990-12-01

    This paper describes a Bowen ratio/energy balance (BREB) system which, in conjunction with an infra-red gas analyzer (IRGA), is referred to as BREB+ and is used to estimate evapotranspiration ( ET) and net CO2 flux ( NCF) over crop canopies. The system is composed of a net radiometer, soil heat flux plates, two psychrometers based on platinum resistance thermometers (PRT), bridge circuits to measure resistances, an IRGA, air pumps and switching valves, and a data logger. The psychrometers are triple shielded and aspirated, and with aspiration also between the two inner shields. High resistance (1 000 ohm) PRT's are used for dry and wet bulbs to minimize errors due to wiring and connector resistances. A high (55 K ohm) fixed resistance serves as one arm of the resistance bridge to ensure linearity in output signals. To minimize gaps in data, to allow measurements at short (e.g., 5 min) intervals, and to simplify operation, the psychrometers were fixed at their upper and lower position over the crop and not alternated. Instead, the PRT's, connected to the bridge circuit and the data logger, were carefully calibrated together. Field tests using a common air source showed appartent effects of the local environment around each psychrometer on the temperatures measured. ET rates estimated with the BREB system were compared to those measured with large lysimeters. Daily totals agreed within 5%. There was a tendency, however, for the lysimeter measurements to lag behind the BREB measurements. Daily patterns of NCF estimated with the BREB+ system are consistent with expectations from theories and data in the literature. Side-by-side comparisons with a stirred Mylar canopy chamber showed similar NCF patterns. On the other hand, discrepancies between the results of the two methods were quite marked in the morning or afternoon on certain dates. Part of the discrepancies may be attributed to inaccuracies in the psychrometric temperature measurements. Other possible causes

  11. Current status of and advances in the treatment of Bowen's disease%Bowen病的治疗现状及进展

    Institute of Scientific and Technical Information of China (English)

    苏云伟; 吴信峰

    2014-01-01

    Bowen病是一种表皮内鳞状细胞癌,可逐渐发展为侵袭性鳞状细胞癌.Bowen病的治疗方法包括手术和非手术疗法.手术治疗包括单纯切除、莫氏显微外科治疗、切削电灼法,非手术治疗包括药物治疗、放射疗法、冷冻疗法、光动力疗法及其他综合疗法等.手术是治疗Bowen病的首选方法,对于不适合手术的患者或特殊部位的病变可考虑药物治疗、光动力治疗等.%Bowen's disease,an intraepidermal squamous cell carcinoma,can progress into invasive squamous cell carcinoma.It can be treated by surgical and nonsurgical methods.Surgical methods involve simple excision,Mohs micrographic surgery,electrodesiccation and curettage; nonsurgical methods include medical treatment,radiotherapy,cryotherapy,photodynamic therapy and other combined therapies.Surgical methods are the first choice for the treatment of Bowen's disease.For patients not suitable for surgery and lesions at specific sites,medical treatment and photodynamic therapy can be used.

  12. The nuclear industry in Australia

    International Nuclear Information System (INIS)

    The history of the development of the nuclear industry in Australia is essentially the history of uranium mining. Australia is a significant exporter of uranium concentrate yellowcake, but no other nuclear power or fuel cycle activity exists on a commercial scale. Industrial radiation processing and the production of radioisotopes and radio-pharmaceuticals are the only other endeavors. The uranium mining in early years and the second discovery period, the policy formulation in 1970s and the recent policy development are described. Australia's low cost reserve has risen to 474,000 t U, and in 1984, three mines produced around 4,400 t U as yellowcake. Once the Jervis Bay nuclear power plant with 500 MWe capacity was planned, but the project was postponed indefinitely. The Uranium Enrichment Group of Australia planned to build an enrichment plant as a joint venture with URENCO Ltd., but also this plan was interrupted. The lack of expansion into nuclear power and fuel cycle activities has been due to favorable fossil fuel resources and their distribution, population density and distribution, social factors and government policy in Australia. (Kako, I.)

  13. Information technology and decision support tools for stakeholder-driven river basin salinity management

    Energy Technology Data Exchange (ETDEWEB)

    Quinn, N.W.T; Cozad, D.B.; Lee, G.

    2010-01-01

    Innovative strategies for effective basin-scale salinity management have been developed in the Hunter River Basin of Australia and more recently in the San Joaquin River Basin of California. In both instances web-based stakeholder information dissemination has been a key to achieving a high level of stakeholder involvement and the formulation of effective decision support salinity management tools. A common element to implementation of salinity management strategies in both river basins has been the concept of river assimilative capacity for controlling export salt loading and the potential for trading of the right to discharge salt load to the river - the Hunter River in Australia and the San Joaquin River in California. Both rivers provide basin drainage and the means of exporting salt to the ocean. The paper compares and contrasts the use of monitoring, modeling and information dissemination in the two basins to achieve environmental compliance and sustain irrigated agriculture in an equitable and socially and politically acceptable manner.

  14. Australia's North West Shelf Venture

    International Nuclear Information System (INIS)

    The North West Shelf Venture is based in Karratha, 1500 km north of Perth in Western Australia. At a cost of $A12bn, it is the biggest and one of the most important natural resource developments in Australia. Originally constructed in 1984 to supply gas to the West Australian domestic and industrial market, the Venture is now the third-largest LNG exporter in the Asia-Pacific region, generating more than $A1.5bn a year in export income. The Venture supplies about 15 percent of Japan's LNG demand, or 7.5 million tonnes a year, to eight Japanese power and gas utilities under 20-year contracts. In addition, 'spot' sales have been made to Spain, South Korea, Turkey and the United States. The Venture also supplies more than 70 percent of Western Australia's domestic gas requirements and exports LPG, condensate and crude oil to global markets

  15. Australia's uranium policy: an examination

    International Nuclear Information System (INIS)

    The mining and export of Australian Uranium poses problems for the safety of the world that any responsible government is bound to consider. The following note lists the major problems, attempts to assess their importance, and to suggest what lines may be relevant to Australia for their solution. These problems were examined because of the concern about the appropriateness of attempting to fulfill projected world energy needs by any means; and their fulfillment, by using nuclear fuels carries special problems of biological, social and political hazards. Any development of Australia's uranium resources should be considered in this light. (author)

  16. Australia: the coming of age.

    Science.gov (United States)

    Kelley, A C

    1988-01-01

    Current demographic trends in Australia and their implications are assessed. The author concludes that "Australia faces a relatively favourable demographic future: ageing is proceeding at a slower pace here, the pattern of the labour force ageing is conducive to restructuring in the intermediate future, and a well-established immigration policy can be used to accommodate demographics with social and economic goals. The financing of social services for the aged will produce fewer concerns here partly because of less immediate demographic pressures and partly because of the orientation of the age-pension system." PMID:12233479

  17. Remembering the Battle for Australia

    Directory of Open Access Journals (Sweden)

    Elizabeth Rechniewski

    2010-05-01

    Full Text Available For the last two years, Australia has commemorated, on the first Wednesday in September, the ‘Battle for Australia Day’, to mark the role of Australian forces fighting the Japanese in the Pacific in WWII. The aim of this article is to identify the agents involved in the campaign for the gazetting of this day and the justifications advanced; to trace the conflicting narratives and political and historical controversies surrounding the notion of a ‘Battle for Australia’; and to outline the shifts in domestic and international politics and generational change that provide the context for the inauguration of this day.

  18. Sediment dynamics in flat landscapes - insights from central Australia

    Science.gov (United States)

    Struck, Martin; Jansen, John D.; Codilean, Alexandru T.; Fujioka, Toshiyuki; Fink, David; Kotevski, Steven

    2015-04-01

    Erosion and sediment routing are key to understanding landscape evolution. In this regard, steep mountain regions have been the focus of most research efforts, leaving flat landscapes effectively unstudied in spite of their vast global extent. However, the timescales of material transfer and storage in regions of low relief are considered much longer than in their steep counterparts. Here we apply in situ-produced cosmogenic nuclides (CNs) to examine the sediment transport and storage history of a low-gradient catchment, Peake River, in arid central Australia. Previous work in central Australia has been restricted to mainly local measurements of landscape lowering and bedrock erosion; however, to better understand the processes shaping these landscapes, we adopt a source-to-sink approach coupling bedrock and hillslope colluvium measurements of CNs with basin-wide measurements in fluvial sediment. Variation in concentrations and ratios of cosmogenic 10Be and 26Al in sediment provide insights to rates of sediment residence times and burial history as grains are transmitted through the bedrock-hillslope-stream sediment conveyor. We present our preliminary CN results from sediments and bedrock, and discuss basin-wide sediment dynamics in flat landscapes, emphasizing the contrast with well-studied mountainous regions.

  19. Estimating evapotranspiration using remote sensing: A hybrid approach between MODIS derived enhanced vegetation index, Bowen ratio system, and ground based micro-meteorological data

    Science.gov (United States)

    Chatterjee, Sumantra

    We investigated water loss by evapotranspiration (ET) from the Palo Verde Irrigation District (PVID) and the Cibola National Wildlife Refuge (CNWR) in southern California bordering the Colorado River collaborating with the United States Bureau of Reclamation (U.S.B.R.). We developed an empirical model to estimate ET for the entire PVID using satellite derived MODIS enhanced vegetation index (EVI), and ground based measurements of solar radiation and vapor pressure. We compared our predictions with U.S.B.R. estimates through statistical cross validation and showed they agree with an error less than 8%. We tested the same model for an alfalfa field inside PVID to check its applicability at a smaller spatial scale. We showed that the same model developed for PVID is the best model for estimating ET for the alfalfa field. We collected data from three Bowen ratio energy balance (BREB) towers installed in the invasive saltcedar (Tamarix spp) dominated riparian zone in the CNWR and a fourth tower in the alfalfa field in PVID. The riparian sites were selected according to different densities of vegetation. We collected data from these sites at various intervals during the period between June 2006 to November 2008. We reduced the errors associated with the Bowen ratio data using statistical procedures taking into account occasional instrument failures and problems inherent in the BREB method. Our results were consistent with vegetation density and estimates from MODIS EVI images. To estimate ET for larger patches of mixed vegetation we modified the crop coefficient equation and represented it in terms of EVI. Using this approach, we scaled the alfalfa field data to the entire PVID and compared the results with U.S.B.R. (2001-2007) estimates. We predicted ET well within the acceptable range established in the literature. We empirically developed ET models for the riparian tower sites to provide accurate point scale ET estimation and scaled for the entire riparian region in

  20. Limnological Conditions and Occurrence of Taste-and-Odor Compounds in Lake William C. Bowen and Municipal Reservoir #1, Spartanburg County, South Carolina, 2006-2009

    Science.gov (United States)

    Journey, Celeste A.; Arrington, Jane M.; Beaulieu, Karen M.; Graham, Jennifer L.; Bradley, Paul M.

    2011-01-01

    Limnological conditions and the occurrence of taste-and-odor compounds were studied in two reservoirs in Spartanburg County, South Carolina, from May 2006 to June 2009. Lake William C. Bowen and Municipal Reservoir #1 are relatively shallow, meso-eutrophic, warm monomictic, cascading impoundments on the South Pacolet River. Overall, water-quality conditions and phytoplankton community assemblages were similar between the two reservoirs but differed seasonally. Median dissolved geosmin concentrations in the reservoirs ranged from 0.004 to 0.006 microgram per liter. Annual maximum dissolved geosmin concentrations tended to occur between March and May. In this study, peak dissolved geosmin production occurred in April and May 2008, ranging from 0.050 to 0.100 microgram per liter at the deeper reservoir sites. Peak dissolved geosmin production was not concurrent with maximum cyanobacterial biovolumes, which tended to occur in the summer (July to August), but was concurrent with a peak in the fraction of genera with known geosmin-producing strains in the cyanobacteria group. Nonetheless, annual maximum cyanobacterial biovolumes rarely resulted in cyanobacteria dominance of the phytoplankton community. In both reservoirs, elevated dissolved geosmin concentrations were correlated to environmental factors indicative of unstratified conditions and reduced algal productivity, but not to nutrient concentrations or ratios. With respect to potential geosmin sources, elevated geosmin concentrations were correlated to greater fractions of genera with known geosmin-producing strains in the cyanobacteria group and to biovolumes of a specific geosmin-producing cyanobacteria genus (Oscillatoria), but not to actinomycetes concentrations. Conversely, environmental factors that correlated with elevated cyanobacterial biovolumes were indicative of stable water columns (stratified conditions), warm water temperatures, reduced nitrogen concentrations, longer residence times, and high

  1. Papulose bowenóide: um aspecto clínico da infecção pelo HPV Bowenoid papulosis: a clinical feature of the HPV infection

    Directory of Open Access Journals (Sweden)

    Sidney Roberto Nadal

    2009-12-01

    Full Text Available Papulose bowenóide é uma doença que acomete a pele da região anogenital e que se caracteriza pelas múltiplas pequenas pápulas planas ou aveludadas e de coloração que varia do róseo ao castanho-escuro. É provocada pelo HPV e a transmissão sexual é a forma mais freqüente de contaminação. As queixas mais comuns são prurido e dor. O aspecto é característico e o exame histopatológico confirma o diagnóstico. Junto com a doença de Bowen e a eritroplasia de Queyrat, é considerada como carcinoma in situ, ou neoplasia intra-epitelial de alto grau (NIAA, a lesão precursora do carcinoma espinocelular (CEC anal. Sem tratamento, a maioria das lesões permanece benigna e estável. Várias modalidades terapêuticas estão disponíveis, incluindo as medicações tópicas para citodestruição e as técnicas ablativas. Os esquemas tópicos são efetivos. Cabe ao profissional médico escolher a terapia adequada, tendo em mente que a doença é benigna e raramente evolui para carcinoma. Como as recidivas são freqüentes e ainda persistem dúvidas quanto ao potencial de malignização, os doentes devem ser examinados periodicamente para diagnosticar as lesões iniciais.Bowenoid papulosis is an anogenital skin disease characterized by multiple little papules, flat or velvet, which color varies from pink to dark brown. It is provoked by HPV and its transmission is sexual. Most common symptoms are anal pain and itching. Its appearance is characteristic and hystopathological examination confirms diagnosis. Together with Bowen´s disease and Queyrat erythroplasia, is considered as an in situ carcinoma, or high grade intra-epithelial neoplasia (HAIN, a precursor of the squamous-cell carcinoma. Most of lesions remain benign and stable without treatment. There are several kinds of treatment including topical drugs for cytodestruction and ablative techniques. Topic schemes are effectives. The consultant doctor may choose the most adequate therapy

  2. Contextualising Multilingualism in Australia Today

    Science.gov (United States)

    Cox, Robyn

    2015-01-01

    This paper will begin by looking at globalisation, education and transnationalism in the context of Australia's post-war immigration history leading to a brief examination of the international literature surrounding second and third generation immigration. A brief review of international educational trends in English language teaching in recent…

  3. Serious Incident Management in Australia

    Science.gov (United States)

    Ellis, Ike; Thorley-Smith, Sara

    2007-01-01

    As part of its efforts to ensure school safety, the government of New South Wales, Australia, has developed simulation exercises to better prepare principals to manage serious incidents, in collaboration with police. This article describes two initiatives implemented across NSW. The exercises provide principals in both secondary and primary…

  4. Afrikaans Language Maintenance in Australia

    Science.gov (United States)

    Hatoss, Aniko; Starks, Donna; van Rensburg, Henriette Janse

    2011-01-01

    Changes in the political climate in the home country have resulted in the emigration of South Africans to English speaking countries such as Britain, Canada, Australia and New Zealand. Despite the scale of movement of the South African population, language maintenance in these diasporic contexts has received little consideration. This paper…

  5. Análise das necessidades hídricas da vegetação Tamarisk através da razão de Bowen e do modelo SEBAL Water demand analysis of the Tamarisk vegetation through of the Bowen ratio and SEBAL model

    Directory of Open Access Journals (Sweden)

    Carlos Antonio Costa dos Santos

    2011-03-01

    Full Text Available O objetivo desse estudo foi determinar a evapotranspiração real diária (ETr da vegetação tamarisk utilizando dados micrometeorológicos e o modelo SEBAL. Foram utilizados dados provenientes do método da razão de Bowen, além do modelo SEBAL aplicado a imagens do Landsat 5 - TM, na obtenção da ETr diária da vegetação tamarisk do Baixo Rio Colorado, CA/EUA. Na obtenção da evapotranspiração de referência (ET0 foi utilizado o método da FAO/Penman-Monteith. Os resultados mostram características de forte advecção de ar, e que a radiação solar é o componente de maior influência na obtenção da ET0. Verifica-se também, que a vegetação tamarisk tem alto consumo hídrico e a sua rápida expansão poderá trazer impactos negativos para os rios da região. As estimativas da ETr pelo modelo SEBAL são similares aos valores medidos na torre micrometeorológica pelo método da razão de Bowen, demonstrando a aplicabilidade do modelo SEBAL na obtenção da distribuição espacial da evapotranspiração real diária.The objective of this study was to determine the daily actual evapotranspiration (ETr of the tamarisk vegetation using micrometeorological data and SEBAL model. Data originating from the Bowen ratio method were used, besides the SEBAL model applied to TM Landsat 5 image for obtaining the daily ETr of the tamarisk vegetation of Lower Colorado River, CA/USA. For obtaining the reference evapotranspiration (ET0 the FAO/Penman-Monteith method was used. The results show characteristics of strong air advection and that the solar radiation has the largest influence in obtaining ET0, as well as, that the tamarisk vegetation has high water demand and its fast expansion can bring negative impacts for the rivers of the area. The estimates of ETr through the SEBAL model are similar to the measured values on the micrometeorological tower by the Bowen ratio method, demonstrating the applicability of the SEBAL model to obtain the spatial

  6. 人乳头瘤病毒与皮肤Bowen病的相关性%Relationship between human papillomavirus and extragenital Bowen's disease

    Institute of Scientific and Technical Information of China (English)

    郑淑云; 朱晓玲; 孔迎辉; 哈达

    2010-01-01

    Objective To assess the relationship between human papillomavirus (HPV) and extrageni-tal Bowen's disease. Methods Regular PCR with consensus primers for LI region as well as mix primers and nested PCR were performed to detect the DNA of a broad range of cutaneous and mucosal HPV types in tissue samples from lesions of 41 patients with extragenital Bowen's disease and from normal skin of 48 human controls. Semiquantitative PCR and tyramide-based in situ hybridization (ISH) were also conducted to determine the load and localization of HPV DNA in HPV-positive samples. Results HPV DNA was detected in lesions from 5 (12%) of the 41 patients with extragenital Bowen's disease. Of the 5 HPV-positive patients, 3 carried mucosal HPV types (HPV16 in 2 cases, HPV 33 in 1 case) with a viral load of 101 to 103 copies, 2 cutaneous HPV types (HPV27 in 1 case and HPV76 in 1 case). As ISH showed, there was a generalized expression of mucosal HPV DNA in most tumor cell nuclei but not in peritumoral normal tissue, and no expression of cutaneous HPV DNA was observed in lesions. HPV DNA was detected in 1 (2.1%) control tissue sample, which proved to be epidermodysplasia verruciformis-associated HPV23. There was no significant difference in the detection rate of HPV DNA between the patients and controls. The viral load of cutaneous HPV types amounted to 10-2 to 10-3 copies in the 2 patients, which was similar to that of HPV 23 in the normal control. Conclusion Mucosal HPV types may be closely associated with the development of extragenital Bowen's disease.%目的 探讨人乳头瘤病毒(HPV)与皮肤Bowen病发病的相关性.方法 41例皮肤Bowen病患者皮损以及48例健康对照皮肤,采用多对引物,应用巢式PCR进行HPV DNA检测,同时应用半定量PCR进行病毒定量,对HPV DNA阳性标本进一步采用原位杂交方法分析组织内病毒的分布状况.结果 41例皮肤Bowen病患者皮损HPV DNA阳性检出率为12%(5例),其中黏膜型3例(2例HPV16,1

  7. ENFERMEDAD DE BOWEN TRATADA CON CRIOTERAPIA COMBINADA CON IMIQUIMOD TOPICO AL 5%. TRATAMIENTO ALTERNATIVO A LA CIRUGÍA EN PACIENTES MAYORES CON CO-MORBILIDADES

    Directory of Open Access Journals (Sweden)

    Lezcano Liz

    2011-04-01

    Full Text Available Bowen's disease (BD is an in situ squamous cell carcinoma in which dysplastic changes occur throughout the full thickness of the epidermis. It usually affects fair-skinned people over 60 years. It is characterized by erythematous papules and plaques solitary or multiple, with a slow centrifugal growth. The differential diagnosis of BD should be established with chronic dermatoses such as psoriasis, chronic eczema, superficial basal cell carcinoma and Paget's disease of the skin. Only 5% of cases progress to invasive squamous cell carcinoma. We report the case of a woman of 63 years of age with BD treated with cryotherapy combined with topical 5% imiquimod who responded adequately to this combination therapy.

  8. Squamous cell carcinoma (Bowen’s disease in situ in three cats Carcinoma espinocelular in situ (doença de Bowen em três gatos

    Directory of Open Access Journals (Sweden)

    L.G. Conceição

    2007-06-01

    Full Text Available Três casos de carcinoma multicêntrico in situ de células escamosas (doença de Bowen são descritos na espécie felina. As neoplasias ocorreram em gatos idosos e acometeram a região pré-auricular, cervical, abdominal e flancos. Um gato apresentou lesão única e os demais apresentaram lesões multifocais, que se caracterizaram por placas que variavam de hiperceratóticas a verruco-crostosas e eram hiperpigmentadas. Algumas eram ulceradas, com fissuras que sangravam facilmente. Histologicamente, as células neoplásicas encontravam-se confinadas à epiderme e aos folículos pilosos, sem o envolvimento da membrana basal. Em um dos casos houve melhora significativa das lesões após terapia oral com acitretina.

  9. Clinical analysis for 18 cases of vulvar Bowen's disease%外阴鲍文病18例临床分析

    Institute of Scientific and Technical Information of China (English)

    袁光文; 吴令英; 张蓉; 李晓光

    2013-01-01

    Objective To analyse the clinical and pathological characteristics,diagnosis,treatment and prognosis of vulvar Bowen's disease.Methods Clinical data including pathological characteristics,diagnosis,treatment methods and follow-up of 18 cases with vulvar Bowen's disease admitted to Cancer Hospital,Chinese Academy of Medical Sciences during January 1991 to June 2011 were retrospectively analyzed.Results The median age of the 18 patients was 37 years (range:23 to 64 years).Sixteen patients had symptoms of vulvar itching and two patients had no symptom.Five cases were single neoplasm focus and the other 13 cases were multiple focuses.The diagnosis of vulvar Bowen's disease was according to the pathological diagnosis.Its diagnostic characteristic was giant round or ovoid cells with mono nucleolus in the whole layer of epidermis.All the patients received operation,eleven with simple vulvectomy and other seven cases with lumpectomy.The median follow-up time was 123 months (range:5 to 197 months).Relapse was found in two cases.One patient relapsed five months postoperation and received vulvectomy.Another patient relapsed fifteen moths post-operation and received lumpectomy again.And they were follow-up for 192months and 55 months respectively after second operation without relapse.Conclusions The diagnostic characteristic of vulvar Bowen's disease is giant round or ovoid cell with mono nucleolus in the whole layer of epidermis,itsdiagnosis is according to the pathological diagnosis.Operation could get very good curative effect for patients with primary vulvar Bowen's disease and even for the recurrent patients.The prognosis of vulvar Bowen's disease is good.%目的 探讨外阴鲍文病的临床病理特点、诊断、治疗及预后.方法 收集1991年1月至2011年6月间中国医学科学院肿瘤医院收治的18例外阴鲍文病患者的临床病理资料,回顾性分析其临床病理特点、诊断、治疗方式及预后情况.结果 18

  10. Slovene migrant literature in Australia

    Directory of Open Access Journals (Sweden)

    Igor Maver

    2002-12-01

    Full Text Available This article on the literary creativity of Slovene rnigrants in Australia after the Second World War, including the most recent publications, discusses only the most artistically accomplished auth­ ors and addresses those works that have received the most enthusiastic reception by the critics and readers alike. Of course, those who are not mentioned are also important to the preservation of Slovene culture and identity among the Slovene migrants in Australia from a documentary, histori­ cal,or ethnological points of view. However, the genresfeatured here include the explicitly literary, the semi-literary fictionalized biography, the memoir and documentary fiction, and the literary journalistic text - all those fields and genres that nowadays straddle the division line between 'high' literature and so-called 'creative fiction'.

  11. Australia; Basel II Implementation Assessment

    OpenAIRE

    International Monetary Fund

    2010-01-01

    The key findings of Australia’s BASEL II implementation assessment are presented. The Australian Prudential Regulation Authority (APRA) allocated sufficient resources, including highly skilled staff, prior to the Basel II start date, and the outcome has been a robust and high-quality implementation that has built upon and substantially strengthened the risk-management capabilities of major banks. The quality of leadership and commitment by all involved has been instrumental in the success o...

  12. Australia and the Indonesian Independence

    OpenAIRE

    Sah-Hadiyatan Ismail

    2011-01-01

    Immediately after World War II, the Indonesian nationalists declared the independence of Indonesia and staunchly opposed the return of the Dutch to the Netherlands East Indies. The Australian Labor government took the position to support the Indonesian nationalist instead of the Dutch. This position was taken based on the rights of self-government for the dependent peoples enshrined in the United Nations Charter and championed by Australia. Besides Australia’s idealism on the colonial issue, ...

  13. Evolving telehealth reimbursement in Australia.

    Science.gov (United States)

    Bursell, S-E; Zang, S; Keech, A C; Jenkins, A J

    2016-08-01

    Video-based consultation is the only telehealth service reimbursed by the Medicare Benefits Schedule in Australia, but the uptake of telehealth is still low and inconsistent. There is a clear need for the development of appropriate medical evidence to support implementation of telehealth services. With the ubiquitous use of mobile phones, mobile health becomes important in facilitating health services and impacting clinical outcomes anywhere. PMID:27553999

  14. Regional Economic Disparities in Australia

    OpenAIRE

    Uma Ramakrishnan; Martin D. Cerisola

    2004-01-01

    Australia's remarkable economic performance during the 1990s has not resulted in a significant convergence of real per capita income, output, and employment levels across the country's states and territories. This paper explores the role of certain economic rigidities that may have contributed to the lack of convergence, including rigidities in labor markets and in the structure of federal government transfers to households and subnational governments. The analysis suggests that the wage awar...

  15. Radiological terrorism and Australia's response

    International Nuclear Information System (INIS)

    A terrorist attack in Australia involving dispersal of radioactive material is different from conventional terrorist attacks involving explosives. The trauma experienced by victims during an explosive incident includes cuts, broken limbs, burns and shock. When an explosive device involving radioactive materials is involved, there are a number of additional characteristics including the contamination of victims and the surrounding area and the potential requirement for ongoing monitoring and decontamination. Response actions may require additional complex emergency response measures including immediate protective actions to protect those potentially exposed to contamination, mass casualty care, and public and mental health. There are concerns that terrorist organizations are showing increasing interest in acquiring radiological material that could be used with explosive. A dirty bomb or technically known as a radiological dispersal device (RDD) is a device designed to spread radioactive contamination over a wide area and pose a health and safety threat to those within the contaminated area. The radioactive material could be in the form of a large chunk of material, fine powder, a liquid mist, or a gas. The material may also be spread in other ways, such as by simply emptying a container over the desired area. As RDD's do not require large amounts of explosives, there is unlikely to be a large numbers of casualties, however the areas contaminated by the radiological material may cause immediate and long term health risks to those exposed. An RDD is a weapon of Mass Disruption rather than destruction. While the likelihood of RDD's being employed by terrorist in Australia is still considered remote, Australia's emergency response organizations are developing plans to ensure a rapid and comprehensive response occurs should such an event occur in this country, The presentation will outline Australia's response arrangements at the local/state level and the type of federal

  16. Private rental housing in Australia

    OpenAIRE

    Paris, C.

    1984-01-01

    This paper is in five parts. In section 1, the significance of private rental housing in Australia is outlined, and contemporary Australian issues are related to overseas developments and local concerns during the 1960s and 1970s. In section 2, some problems involved in defining the private rental sector are examined, the focus being on different types of landlords. In section 3, trends, issues, and problems are discussed, this involving a detailed examination both of the extent to which avai...

  17. Karst and agriculture in Australia.

    Directory of Open Access Journals (Sweden)

    Gillieson David

    1999-01-01

    Full Text Available Much of the development and degradation of karst lands in Australia has occurred in the last two centuries since European settlement. Recent prolonged El Nino events add further climatic uncertainty and place real constraints on sustainable agriculture. The lower southeast of South Australia is perhaps the one area in Australia where karst, and particularly karst hydrology, impinge on the daily lives of the community in that pollution and overexploitation of the aquifer are readily apparent to the local population. Effluent from intensive dairy farms, piggeries and cheese factories enters the karst and has caused concern over pollution of water supplies. Human impacts on the Mole Creek karst of Tasmania have been well documented. The principal recent impacts on the karst arc associated with land clearance for farmland, forest cutting for timber, road building, refuse disposal and associated hydrological change. There is similar evidence of agricultural impacts un karst in central New South Wales, with clear evidence of vegetation clearance and soil stripping on the limestones at Wellington, Orange and Molong.

  18. Paleo stress contribution to fault and natural fracture distribution in the Cooper Basin

    Science.gov (United States)

    Abul Khair, H.; Cooke, D.; Hand, M.

    2015-10-01

    The contribution of the unconventional reservoirs to the global oil and gas production made it important to address the main factors that control high production from these reservoirs. Hydraulic fracturing that intersect natural fractures results in a high stimulated rock volume and high production. Over a decade of effort to use elastic dislocation and different types of restoration to predict fracture network didn't succeed fully in addressing this factor. We used image log fractures and fault network within an iterative boundary element method (iBEM3D) to predict the paleo-tectonic events and the fracture network in the Cooper Basin. The methodology was able to predict only the major tectonic events that occurred after the deposition of the Cooper Basin sediments and contributed to the formation of the natural fractures. As the methodology does not include fault elastic properties, fracture orientations near the faults showed unrealistic results and should not be considered as indicative for the actual natural fractures. The main trend of the Cooper Basin fractures was attributed to post Triassic inter-seismic relaxation after major tectonic compressional events, which resulted in a normal fault stress regime. However, the current day stress regime is believed to be also a major factor in forming some of the natural fractures. Hunter Bowen orogeny in the Late Triassic contributed less to the existing fractures. Whereas, Cainozoic compressional forces played no role in the formation of the Cooper Basin natural fractures.

  19. Arctic Summer Surface Energy Balance at Two Coastal Drained Lake Basins, Barrow, Alaska

    Science.gov (United States)

    Liljedahl, A.; Hinzman, L.; Harazono, Y.; Zona, D.; Oechel, W.

    2008-12-01

    We examined the partitioning of the summer surface energy balance at two coastal drained lake basins using measurements from two eddy covariance towers in Barrow, Alaska. Drained lake basins are a common land feature covering approximately one fourth of the Arctic Coastal Plain but have been given limited attention. Overall, wetlands are extensive in the region in spite of an annual precipitation close to a desert and a negative summer P-ET. Included in the analysis was summer 2007, which experienced unusually high air temperatures and low precipitation compared to the long term mean. During the five analyzed summers, most of the energy available at the ground surface was partitioned into sensible heat flux despite saturated or nearly saturated near-surface soils. The maritime conditions resulted in a cool and close to saturated air mass with a few exceptions on individual days. With a ground surface often warmer than the air above and limited air vapor pressure deficits, the dissipation of the available heat at the ground surface was mainly partitioned into sensible heat flux resulting in midday Bowen Ratios (sensible divided by latent heat flux) above unity. Total daily latent heat flux presented in mm of water varied between 0.2 - 4.2 mm/day with a Jun-Aug mean of 1.5 mm. In 80% of the analyzed days, mean midday evapotranspiration occurred below the equilibrium rate resulting in a Priestley-Taylor alpha value below unity. The equilibrium evaporation rates of inland arctic wetlands have previously shown to occur at or above equilibrium rate. Further, the energy balance partitioning of a wetland located in a maritime or continental climate show differences such as in the Bowen Ratio. It is therefore necessary to analyze coastal and inland areas separately when examining the hydrological response of wetlands to climate changes.

  20. On the Equality Assumption of Latent and Sensible Heat Energy Transfer Coefficients of the Bowen Ratio Theory for Evapotranspiration Estimations: Another Look at the Potential Causes of Inequalities

    Directory of Open Access Journals (Sweden)

    Suat Irmak

    2014-08-01

    Full Text Available Evapotranspiration (ET and sensible heat (H flux play a critical role in climate change; micrometeorology; atmospheric investigations; and related studies. They are two of the driving variables in climate impact(s and hydrologic balance dynamics. Therefore, their accurate estimate is important for more robust modeling of the aforementioned relationships. The Bowen ratio energy balance method of estimating ET and H diffusions depends on the assumption that the diffusivities of latent heat (KV and sensible heat (KH are always equal. This assumption is re-visited and analyzed for a subsurface drip-irrigated field in south central Nebraska. The inequality dynamics for subsurface drip-irrigated conditions have not been studied. Potential causes that lead KV to differ from KH and a rectification procedure for the errors introduced by the inequalities were investigated. Actual ET; H; and other surface energy flux parameters using an eddy covariance system and a Bowen Ratio Energy Balance System (located side by side on an hourly basis were measured continuously for two consecutive years for a non-stressed and subsurface drip-irrigated maize canopy. Most of the differences between KV and KH appeared towards the higher values of KV and KH. Although it was observed that KV was predominantly higher than KH; there were considerable data points showing the opposite. In general; daily KV ranges from about 0.1 m2∙s−1 to 1.6 m2∙s−1; and KH ranges from about 0.05 m2∙s−1 to 1.1 m2∙s−1. The higher values for KV and KH appear around March and April; and around September and October. The lower values appear around mid to late December and around late June to early July. Hourly estimates of KV range between approximately 0 m2∙s−1 to 1.8 m2∙s−1 and that of KH ranges approximately between 0 m2∙s−1 to 1.7 m2∙s−1. The inequalities between KV and KH varied diurnally as well as seasonally. The inequalities were greater during the non

  1. Nursing observation on aminolevulinic acid-photodynamic therapy in the topical treatment of Bowen disease%盐酸氨酮戊酸光动力疗法治疗鲍恩病的效果观察及护理

    Institute of Scientific and Technical Information of China (English)

    张文君; 戴京萍; 陈晓吟; 陈凤仪; 王艳芳

    2012-01-01

    Objective To summarize the key points of nursing patients with Bowen disease treated with topical aminolevulinic acid-photodynamic therapy ( ALA-PDT). Method 36 patients with Bowen disease were treated with ALA-PDT from January 2010 to December 2011, and cooperative nursing was performed to them. Results Of the 36 patients, full recovery was achieved in 29 of them, effective treatment in 5 and ineffective treatment in 2. The total effective rate reached 94.44%. Conclusions ALA-PDT may be cosmetically effective in the treatment of Bowen disease, without such complications as trauma, ulceration and scar. It is important to keep to the nursing points of topical ALA-PDT for Bowen disease to ensure the curative effect.%目的 探讨鲍恩病患者采用盐酸氨酮戊酸光动力治疗的效果及总结护理要点.方法 2010年1月~2011年12月对36例鲍恩病患者采用盐酸氨酮戊酸光动力治疗,并配合做好护理工作.结果 36例患者中29例痊愈,5例显效,2例无效,总有效率为94.44%.结论 盐酸氨酮戊酸光动力治疗鲍恩病效果较好,而且具有无创伤、溃疡及瘢痕的优点.护理方面应做好盐酸氨酮戊酸光动力疗法治疗过程护理工作,其对于保证治疗顺利进行和良好疗效具有重要的作用.

  2. The expressions of COX-2 and Ki67 in Bowen's disease%COX-2和Ki67在鲍恩病皮损中的表达

    Institute of Scientific and Technical Information of China (English)

    李丽丽; 朴冰; 崔英; 尤德渊

    2014-01-01

    Objective To study the expressions and relationship of COX-2 and Ki67 in Bowen’s disease. Methods Specimens from 27 Bowen's disease patients and 15 normal persons were assayed for COX-2 and Ki67 by immunohistochemistry. Results The expressions of COX-2 and Ki67 in normal skin was very low, but in Bowen's disease was signiifcantly increased. COX-2 was positive correlated with Ki67 in Bowen's disease(r=0.451, P<0.05). Conclusion The abnormal level of COX-2 and Ki67 plays a role in carcinogenesis and development of Bowen's disease, the over-expression of COX-2 may result in the proliferation of tumor cell.%目的:研究COX-2和Ki67在鲍恩病皮损中的表达情况,并探讨两者之间的关系。方法应用免疫组化SP染色法对27例鲍恩病患者皮损及15份正常皮肤组织进行COX-2和Ki67染色。结果 COX-2与Ki67在正常皮肤组织中表达非常低,而在鲍恩病皮损中染色强度显著增高(P<0.05)。COX-2与Ki67在鲍恩病皮损中的表达水平呈显著正相关(r=0.451,P<0.05)。结论 COX-2与鲍恩病的发生密切相关,过度表达的COX-2蛋白可能参与肿瘤细胞的增生过程。

  3. Immigration and unemployment in Australia.

    Science.gov (United States)

    Tsokhas, K

    1994-01-01

    "This article is presented in two parts. The first contains a discussion of Australia's migration programme, its different categories and changes in intakes. It also deals with the contribution made by immigration to the size of the labour force.... The second part deals with the effect of immigration on the unemployment rate and concludes that its effect is negligible or, at best, slightly positive.... Against this background the paper discusses factors contributing to the employment and unemployment experience of migrants, for whom English language proficiency and the possession of recognized skills and qualifications are important in determining employability." (SUMMARY IN FRE AND SPA) PMID:12289763

  4. [Mental health services in Australia].

    Science.gov (United States)

    Kisely, Steve; Lesage, Alain

    2014-01-01

    Canada is 1.5 times the size of Australia. Australia's population of 20 million is located principally on the east coast. Like Canada, the Australia has a federal system of Government with 5 States and two territories. Each State and territory has its own legislation on mental health. The federal (Commonwealth) Government is responsible for health care planning. In addition, the federal Government subsidizes an insurance program (Medicare) that covers visits to specialists and family physicians, while provincial governments are involved in the provision of hospital care and community mental health services. The Commonwealth government also subsidises the cost of medication through the Pharmaceutical Benefits Scheme. These funds are supplemented by private health insurance. Mental health costs account for 6.5 per cent of all health care costs. Primary care treats the majority of common psychological disorders such as anxiety or depression, while specialist mental health services concentrate on those with severe mental illness. There have been 4 national mental health plans since 1992 with the long term aims of promoting mental health, increasing the quality and responsiveness of services, and creating a consistent approach to mental health service system reform among Australian states and territories. These systematic cycles of planning have first allowed a shift from psychiatric hospitals to community services, from reliance on psychiatric hospitals as pivotal to psychiatric care system. Community care budgets have increased, but overall have decreased with money not following patients; but recent deployment of federally funded through Medicare access to psychotherapy by psychologists for common mental disorders in primary care have increased overall budget. Concerns remain that shift to youth first onset psychosis clinics may come from older long-term psychotic patients, a form of discrimination whilst evidence amount of excess mortality by cardio

  5. Geoethics: a perspective from Australia

    OpenAIRE

    Ian B. Lambert

    2012-01-01

    This short article is based on the introductory remarks I made in the Geoethics symposium at Geoitalia 2011. I was pleased to be invited to provide a brief address at this meeting because it gave me the opportunity to promote the 34th International Geological Congress (IGC) that will to be held in Brisbane, Australia, on August 5-10, 2012, and which will have a strong geoethics symposium. My succinct remarks reflect my experience over many years in provision of technical information and advic...

  6. [Mental health services in Australia].

    Science.gov (United States)

    Kisely, Steve; Lesage, Alain

    2014-01-01

    Canada is 1.5 times the size of Australia. Australia's population of 20 million is located principally on the east coast. Like Canada, the Australia has a federal system of Government with 5 States and two territories. Each State and territory has its own legislation on mental health. The federal (Commonwealth) Government is responsible for health care planning. In addition, the federal Government subsidizes an insurance program (Medicare) that covers visits to specialists and family physicians, while provincial governments are involved in the provision of hospital care and community mental health services. The Commonwealth government also subsidises the cost of medication through the Pharmaceutical Benefits Scheme. These funds are supplemented by private health insurance. Mental health costs account for 6.5 per cent of all health care costs. Primary care treats the majority of common psychological disorders such as anxiety or depression, while specialist mental health services concentrate on those with severe mental illness. There have been 4 national mental health plans since 1992 with the long term aims of promoting mental health, increasing the quality and responsiveness of services, and creating a consistent approach to mental health service system reform among Australian states and territories. These systematic cycles of planning have first allowed a shift from psychiatric hospitals to community services, from reliance on psychiatric hospitals as pivotal to psychiatric care system. Community care budgets have increased, but overall have decreased with money not following patients; but recent deployment of federally funded through Medicare access to psychotherapy by psychologists for common mental disorders in primary care have increased overall budget. Concerns remain that shift to youth first onset psychosis clinics may come from older long-term psychotic patients, a form of discrimination whilst evidence amount of excess mortality by cardio

  7. Aquaponics : Practical thesis in Australia

    OpenAIRE

    Kopsa, Piia

    2015-01-01

    This thesis is about building an aquaponics system to an Australian farm. This thesis begins by introducing what aquaponics is, and continues by designing and building an aquaponics system to a farm in Australia. One of the goals is to learn more about aquaponics that’s a growing idea all around the world and raise the farm’s self-sustainability level. Information for the thesis has been gathered from several books, internet sources, followed by visits and inter-views from users of existing a...

  8. Immigration and unemployment in Australia.

    Science.gov (United States)

    Tsokhas, K

    1994-01-01

    "This article is presented in two parts. The first contains a discussion of Australia's migration programme, its different categories and changes in intakes. It also deals with the contribution made by immigration to the size of the labour force.... The second part deals with the effect of immigration on the unemployment rate and concludes that its effect is negligible or, at best, slightly positive.... Against this background the paper discusses factors contributing to the employment and unemployment experience of migrants, for whom English language proficiency and the possession of recognized skills and qualifications are important in determining employability." (SUMMARY IN FRE AND SPA)

  9. Water: Drought, Crisis and Governance in Australia and Brazil

    Directory of Open Access Journals (Sweden)

    Wilson Sousa Júnior

    2016-10-01

    Full Text Available Despite huge differences in population, household income and development levels, Australia and Brazil have some temporal convergences in their water governance systems. Over the last 20 years, both countries have significantly reformed their water policies and practices by introducing a legal foundation for more integrated and participatory catchment/basin management based on the best information available. A critical test of any water reform is how effective it is in meeting the challenges of extreme and unpredictable conditions of drought and floods, which are expected to increase under climate changes scenarios. This paper compared the contemporary water governance frameworks of Australia and Brazil in relation to three elements of Integrated Water Resources Management (IWRM: integration, participation, and information/knowledge. We focused on insights from Brazil’s recent drought and Australia’s fluctuating water crises to derive lessons and recommendations for future changes. Among the main recommendations, we stress the need for both systems to improve effective participation and to embrace a more comprehensive approach to cope with water scarcity in future scenarios. Furthermore, water related decisions should be based on a transparent and well informed process, and take into account the lessons from similar situations worldwide in order to avoid unnecessary or ineffective measures. As demonstrated in the Australian case during the Millennium Drought, the most effective initiatives were those involving government, the private sector and society to achieve a more sustainable consumption pattern in all sectors. There is much to learn from the Brazilian and Australia experiences in water reforms and crises, but it is imperative to understand the social, economic and environmental context within which these took place. Continuing to develop the capacity and willingness of researchers and policy makers to work together can make an

  10. Water reform in the Murray-Darling Basin

    Science.gov (United States)

    Connell, Daniel; Grafton, R. Quentin

    2011-12-01

    In Australia's Murray-Darling Basin the Australian and state governments are attempting to introduce a system of water management that will halt ongoing decline in environmental conditions and resource security and provide a robust foundation for managing climate change. This parallels similar efforts being undertaken in regions such as southern Africa, the southern United States, and Spain. Central to the project is the Australian government's Water Act 2007, which requires the preparation of a comprehensive basin plan expected to be finalized in 2011. This paper places recent and expected developments occurring as part of this process in their historical context and examines factors that could affect implementation. Significant challenges to the success of the basin plan include human resource constraints, legislative tensions within the Australian federal system, difficulties in coordinating the network of water-related agencies in the six jurisdictions with responsibilities in the Murray-Darling Basin, and social, economic, and environmental limitations that restrict policy implementation.

  11. Uranium production economics in Australia

    International Nuclear Information System (INIS)

    This review of the economics of production of uranium in Australia provides a detailed description of eleven important uranium deposits including capital and production costs estimates and supply curves. For each mine a detailed assessment has been made of its potential production capacity to the year 2000. Socio-economic factors that play an all-too-important role in the Australian uranium industry are extensively reviewed to provide an insight into the factors affecting Australia's ability to supply. The study is based on a detailed computer-based economic engineering model where all major costs such as labor, consumables and capital recovery charges are analyzed for each mine, and levellised break-even prices determined. It is argued that at the present low market prices, the three on-going operations are profitable, and at least three other deposits could be brought to viable production, given the necessary Government approval. Several other deposits appear to be marginal at the set Australian export floor price of US$26 per pound. Annual production could be raised from about 6,000 tonnes of U3O8 to 16,000 tonnes by the turn of century, with the development of three additional deposits. It is concluded that, if Australian producers were allowed to compete freely on the international market, annual production would pass the 10,000 tonne/annum mark between 1995 and 2000. 35 figs., 38 tabs., 81 refs

  12. Neutron scattering science in Australia

    Energy Technology Data Exchange (ETDEWEB)

    Knott, Robert [Australian Nuclear Science and Technology Organisation, Menai, NSW (Australia)

    1999-10-01

    Neutron scattering science in Australia is making an impact on a number of fields in the scientific and industrial research communities. The unique properties of the neutron are being used to investigate problems in chemistry, materials science, physics, engineering and biology. The reactor HIFAR at the Australian Nuclear Science and Technology Organisation research laboratories is the only neutron source in Australia suitable for neutron scattering science. A suite of instruments provides a wide range of opportunities for the neutron scattering community that extends throughout universities, government and industrial research laboratories. Plans are in progress to replace the present research reactor with a modern multi-purpose research reactor to offer the most advanced neutron scattering facilities. The experimental and analysis equipment associated with a modern research reactor will permit the establishment of a national centre for world class neutron science research focussed on the structure and functioning of materials, industrial irradiations and analyses in support of Australian manufacturing, minerals, petrochemical, pharmaceuticals and information science industries. (author)

  13. Vehicle crashworthiness ratings in Australia.

    Science.gov (United States)

    Cameron, M; Mach, T; Neiger, D; Graham, A; Ramsay, R; Pappas, M; Haley, J

    1994-08-01

    The paper reviews the published vehicle safety ratings based on mass crash data from the United States, Sweden, and Great Britain. It then describes the development of vehicle crashworthiness ratings based on injury compensation claims and police accident reports from Victoria and New South Wales, the two most populous states in Australia. Crashworthiness was measured by a combination of injury severity (of injured drivers) and injury risk (of drivers involved in crashes). Injury severity was based on 22,600 drivers injured in crashes in the two states. Injury risk was based on 70,900 drivers in New South Wales involved in crashes after which a vehicle was towed away. Injury risk measured in this way was compared with the "relative injury risk" of particular model cars involved in two car crashes in Victoria (where essentially only casualty crashes are reported), which was based on the method developed by Folksam Insurance in Sweden from Evans' double-pair comparison method. The results include crashworthiness ratings for the makes and models crashing in Australia in sufficient numbers to measure their crash performance adequately. The ratings were normalised for the driver sex and speed limit at the crash location, the two factors found to be strongly related to injury risk and/or severity and to vary substantially across makes and models of Australian crash-involved cars. This allows differences in crashworthiness of individual models to be seen, uncontaminated by major crash exposure differences. PMID:7916859

  14. Resource rent tax in Australia

    Energy Technology Data Exchange (ETDEWEB)

    Bradley, P.G.

    1985-01-01

    Since July 1, 1984, new (greenfield) offshore petroleum projects lying beyond the territorial sea (thus under federal control) have been subject to a Commonwealth resource rent tax (CRRT). Rules are to be laid down for calculating the economic rent to be attributed to production of any petroleum-crude oil, condensate, natural gas, LPG, or ethane. This rent is the tax base, and it is to be taxed at a rate of 40%. The first section of this paper briefly summarizes the current situation in Australia. This account is based chiefly on a series of public discussion papers (Australia, 1983, 1984a, 1984b) issued by the Commonwealth government before introducing the new tax. Then examined are certain limitations that apply to any tax system designed to appropriate realized economic rent. The following section focuses on several problems specifically associated with the CRRT that must be resolved if this approach to taxing mineral revenues is to be widely copied. In conclusion, the author reviews major remaining issues in the CRRT discussion on both the theoretical and applied levels, and return to the question of why rent-based taxes have not been more widely adopted. 18 references.

  15. Balanço de energia e estimativa da evapotranspiração em culturas irrigadas de maracujazeiro pelo método da razão de Bowen Energy balance and estimative of the evapotranspiration of irrigated passionfruit crops by the Bowen ratio method

    Directory of Open Access Journals (Sweden)

    Tonny J. A. Silva

    2007-08-01

    Full Text Available A cultura do maracujazeiro-amarelo tem tido grande expansão da área cultivada no Estado de São Paulo e, apesar da importância da irrigação para a cultura, há poucos estudos sobre sua utilização. Este trabalho foi realizado na área experimental de irrigação, na Fazenda Areão, do Departamento de Engenharia Rural, da Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ/USP (Piracicaba - SP. Foram coletados dados de saldo de radiação, fluxo de calor no solo, gradientes de temperatura e pressão de vapor do ar com o objetivo de avaliar a partição da energia disponível e a evapotranspiração em cultivo de maracujazeiros em dois sistemas de plantio (linhas de cultivo norte-sul e leste-oeste. O método da razão de Bowen foi utilizado na determinação dos fluxos de calor sensível e latente. O saldo de radiação não foi influenciado pelo sistema de plantio, sendo equivalente a 60% da radiação global. O componente de maior contribuição no balanço de energia foi o calor latente de evaporação ocorrendo imediatamente após a chuva ou irrigação. A utilização do modelo de análise e exclusão de intervalos em que o método da Razão de Bowen falha, melhora a estimativa da evapotranspiração.Passionfruit crop has been having great expansion in the cultivated area of São Paulo State and beside the irrigation importance for crop; there are few studies about its utilization. This work was carried out at the experimental irrigation farm of the Engineering Department - College of Agriculture "Luiz de Queiroz" - ESALQ/USP, in Piracicaba, São Paulo State, Brazil. Were collected micrometeorological data from net radiation, soil flux heat, temperature and vapor pressure gradient with the aim to evaluate the partition of available energy and evapotranspiration of passionfruit crop planted under two row directions (North-South and East-West. The Bowen ratio method was used to determine both sensible and latent fluxes. The net

  16. Policy and Indigenous Languages in Australia

    Science.gov (United States)

    McKay, Graham

    2011-01-01

    The use of Indigenous languages has been declining over the period of non-Aboriginal settlement in Australia as a result of repressive policies, both explicit and implicit. The National Policy on Languages (Lo Bianco, 1987) was the high point of language policy in Australia, given its national scope and status and its attempt to encompass all…

  17. Imported Case of Poliomyelitis, Melbourne, Australia, 2007

    OpenAIRE

    Stewardson, Andrew J.; Roberts, Jason A; Beckett, Carolyn L.; Prime, Hayden T.; Loh, Poh-Sien; Thorley, Bruce R.; Daffy, John R.

    2009-01-01

    Wild poliovirus–associated paralytic poliomyelitis has not been reported in Australia since 1977. We report type 1 wild poliovirus infection in a man who had traveled from Pakistan to Australia in 2007. Poliomyelitis should be considered for patients with acute flaccid paralysis or unexplained fever who have been to poliomyelitis-endemic countries.

  18. Growth arrest in the ribosomopathy, Bowen-Conradi syndrome, is due to dramatically reduced cell proliferation and a defect in mitotic progression.

    Science.gov (United States)

    Armistead, Joy; Patel, Nehal; Wu, Xiaoli; Hemming, Richard; Chowdhury, Biswajit; Basra, Gagandeep Singh; Del Bigio, Marc R; Ding, Hao; Triggs-Raine, Barbara

    2015-05-01

    Bowen-Conradi syndrome (BCS) is a ribosomopathy characterized by severe developmental delay and growth failure that typically leads to death by one year of age. It is caused by a c.257A>G, p.D86G substitution in the ribosomal biogenesis protein, Essential for Mitotic Growth 1 (EMG1). We generated a knock-in of the D86G substitution in mice to characterize the effects of EMG1 deficiency, particularly in the brain, where EMG1 expression is high. Embryos homozygous for the mutation in Emg1 were small for gestational age with neural tube defects, and died between embryonic days 8.5 and 12.5. These embryos exhibited dramatically reduced cell proliferation, which we also detected in autopsy brain tissue and bone marrow of BCS patients, consistent with a requirement for high levels of EMG1 in tissues with rapid cell proliferation. In fibroblasts derived from the BCS mouse embryos, we detected a high proportion of binucleated cells, indicating that a mitotic defect underlies the growth arrest in BCS. These studies add to growing evidence of a link between ribosome biogenesis, mitotic progression, and brain development that is currently unexplored.

  19. Comparison of eddy covariance and modified Bowen ratio methods for measuring gas fluxes and implications for measuring fluxes of persistent organic pollutants

    Science.gov (United States)

    Bolinius, Damien Johann; Jahnke, Annika; MacLeod, Matthew

    2016-04-01

    Semi-volatile persistent organic pollutants (POPs) cycle between the atmosphere and terrestrial surfaces; however measuring fluxes of POPs between the atmosphere and other media is challenging. Sampling times of hours to days are required to accurately measure trace concentrations of POPs in the atmosphere, which rules out the use of eddy covariance techniques that are used to measure gas fluxes of major air pollutants. An alternative, the modified Bowen ratio (MBR) method, has been used instead. In this study we used data from FLUXNET for CO2 and water vapor (H2O) to compare fluxes measured by eddy covariance to fluxes measured with the MBR method using vertical concentration gradients in air derived from averaged data that simulate the long sampling times typically required to measure POPs. When concentration gradients are strong and fluxes are unidirectional, the MBR method and the eddy covariance method agree within a factor of 3 for CO2, and within a factor of 10 for H2O. To remain within the range of applicability of the MBR method, field studies should be carried out under conditions such that the direction of net flux does not change during the sampling period. If that condition is met, then the performance of the MBR method is neither strongly affected by the length of sample duration nor the use of a fixed value for the transfer coefficient.

  20. Uranium exploration and mining in Australia

    International Nuclear Information System (INIS)

    Uranium minerals were discovered in Australia in the years 1850 to 1900 already, but most of them were not recognised as such. It was not until 1894 that the first significant uranium find was made in Carcoar, west of Sydney. At that time, the uranium output of the world, which only amounted to a few hundred cwts, was for the most part obtained from mining areas close to the border between Saxony and Bohemia. In South Australia, uranium ore was mined experimentally for the production of radium at Radium Hill from 1906 onwards and at Mt. Painter from 1910 onwards. It was not until World War II, however, that uranium gained importance as a valuable raw material that could also be used for military purposes. The second phase of uranium mining in Australia commenced in 1944. Within ten years Australia's presumed uranium potential was confirmed by extensive exploration. The development of uranium mining in Australia is described in the present paper. (orig.)

  1. Providing and financing aged care in Australia

    Directory of Open Access Journals (Sweden)

    Ergas H

    2011-06-01

    Full Text Available Henry Ergas1,2, Francesco Paolucci31University of Wollongong, Wollongong, NSW, Australia; 2Deloitte Australia, Brindabella Business Park, Canberra Airport, ACT, Australia; 3Australian Centre for Economic Research on Health, The Australian National University, Acton, Canberra, ACT, AustraliaAbstract: This article focuses on the provision and financing of aged care in Australia. Demand for aged care will increase substantially as a result of population aging, with the number of Australians aged 85 and over projected to increase from 400,000 in 2010 to over 1.8 million in 2051. Meeting this demand will greatly strain the current system, and makes it important to exploit opportunities for increased efficiency. A move to greater beneficiary co-payments is also likely, though its extent may depend on whether aged care insurance and other forms of pre-payment can develop.Keywords: aged care, long-term care, sustainability, residential care, community care

  2. Education, Place and Sustainability: A Literature Review and Overview of Curriculum and Policy in the States and the Territory of the Murray-Darling Basin

    Science.gov (United States)

    Roberts, Philip; Downes, Natalie; Cook, Louise; Heiner, Irmgard; Caffery, Jo

    2014-01-01

    This report has been developed as part of the MDBfutures Collaborative Research Network project "Towards Place Based Education in the Murray-Darling Basin." The project explores the ways in which sustainability is understood in Murray Darling Basin (MDB) communities of Australia (including Indigenous, rural, small towns and regional…

  3. The role of storage capacity in coping with intra- and inter-annual water variability in large river basins

    Science.gov (United States)

    Gaupp, Franziska; Hall, Jim; Dadson, Simon

    2015-12-01

    Societies and economies are challenged by variable water supplies. Water storage infrastructure, on a range of scales, can help to mitigate hydrological variability. This study uses a water balance model to investigate how storage capacity can improve water security in the world’s 403 most important river basins, by substituting water from wet months to dry months. We construct a new water balance model for 676 ‘basin-country units’ (BCUs), which simulates runoff, water use (from surface and groundwater), evaporation and trans-boundary discharges. When hydrological variability and net withdrawals are taken into account, along with existing storage capacity, we find risks of water shortages in the Indian subcontinent, Northern China, Spain, the West of the US, Australia and several basins in Africa. Dividing basins into BCUs enabled assessment of upstream dependency in transboundary rivers. Including Environmental Water Requirements into the model, we find that in many basins in India, Northern China, South Africa, the US West Coast, the East of Brazil, Spain and in the Murray basin in Australia human water demand leads to over-abstraction of water resources important to the ecosystem. Then, a Sequent Peak Analysis is conducted to estimate how much storage would be needed to satisfy human water demand whilst not jeopardizing environmental flows. The results are consistent with the water balance model in that basins in India, Northern China, Western Australia, Spain, the US West Coast and several basins in Africa would need more storage to mitigate water supply variability and to meet water demand.

  4. The abortion debate in Australia.

    Science.gov (United States)

    Read, Christine Margaret

    2006-09-01

    I recently watched a fascinating documentary about the crusade of Dr Bertram Wainer in the 1960s to bring the practice of illegal abortion in Victoria to an end. It documented the profound horror of the backyard abortion that so often ended in infection, sterility or death, and served as a potent reminder of a practice to which we must never return. Of course that cant happen again, abortion is legal now, isnt it? In Victoria in 1969 a Supreme Court judge ruled that an abortion is not unlawful if a doctor believed that: the abortion is necessary to preserve the woman from serious danger to her life or physical or mental health (Menhennit ruling). In Australia today however, abortion law remains conditional, unclear and inconsistent and, except in the ACT, is still part of criminal statutes. PMID:16969440

  5. Geoethics: a perspective from Australia

    Directory of Open Access Journals (Sweden)

    Ian B. Lambert

    2012-07-01

    Full Text Available This short article is based on the introductory remarks I made in the Geoethics symposium at Geoitalia 2011. I was pleased to be invited to provide a brief address at this meeting because it gave me the opportunity to promote the 34th International Geological Congress (IGC that will to be held in Brisbane, Australia, on August 5-10, 2012, and which will have a strong geoethics symposium. My succinct remarks reflect my experience over many years in provision of technical information and advice in support of Australian government decisions and policies on mining, energy and groundwater - all of which have core geoscientific elements. Further, they reflect the situation in a new world country with a strong economy dominated by mining, which differs in many ways from the countries where the field of geoethics has been nurtured and grown. They also outline a dilemma relating to mining in a developing country.

  6. Royal Commissions into Policing: Australia

    Directory of Open Access Journals (Sweden)

    Alan Beckley

    2013-03-01

    Full Text Available Royal Commissions and Inquiries have investigated every police force in Australia in relation to their integrity, accountability and effectiveness—a factor of major importance to every citizen in maintaining their freedom, safety and security. The crucial question this paper poses is whether such tribunals are effective or otherwise in terms of the benefits and outcomes accrued from their findings. The paper is in the form of a critical discussion which investigates and analyses the Inquiries using the method of desk research of official documents over the last 50 years from which it identifies common findings and recommendations contained in the official discourse. The research concludes that lessons have not been learned in relation to policing operations, accountability and integrity in a number of cases and highlights a variety of adverse issues that persist into current policing practice.

  7. Agricultural Innovation System In Australia

    Directory of Open Access Journals (Sweden)

    Sudath Arumapperuma

    2014-09-01

    Full Text Available The aim of this paper is to document agricultural innovation systems (AIS in Australia. We identified eleven broad categories (actors in terms of their activities, namely: policy, education, finance and credit, marketing, input supply, research, extension and information, logistics, processing and storage, farmers and farm organisations and consumers. Survey results reveal that 11 kinds of innovation-related activities of research and education organisations with corresponding percentage weight are directly involved in innovation diffusion. Twelve pre-identified goals of innovation related activities of the above organisations surveyed with their corresponding percentage weight have also been revealed. The study reveals that the majority of funding (more than 80% for innovation activities comes from the Federal Government and funding bodies. Finally survey results indicate that the main constrains/incentives are other issues such as funding, lack of qualified staff, equipment, environmental and Government policy issues etc.

  8. Rainfall-runoff modelling in northern Australia: A guide to modelling strategies in the tropics

    Science.gov (United States)

    Petheram, C.; Rustomji, P.; Chiew, F. H. S.; Vleeshouwer, J.

    2012-09-01

    SummaryA prolonged drought across southern Australia has led to renewed interest in water resource development of northern Australia, and to increased demand for runoff predictions from ungauged catchments in Australia's tropics. In contrast to more temperate settings where there is a plethora of rainfall-runoff modelling studies, the world's tropical regions, including those of Australia, have received little attention and thus the predictive skill of various rainfall-runoff models and methods in tropical basins is less known. Using data from 105 catchments in tropical Australia, five daily rainfall-runoff models and three methods of regionalising model parameters were compared. When locally calibrated, the more complex rainfall-runoff models performed best. However, when the models were used to predict streamflow in 'ungauged' catchments the differences in model performance was negligible. The adoption of multiple criteria to select an optimal parameter set resulted in an improved ability to simulate low-flows with no loss in predictive capacity for higher flows. An 'informed' transposition of parameter sets from gauged to ungauged catchments was better than random assignment of intact parameter sets for medium to high-flows, but not for low-flows. Assigning model parameters on the basis of spatial proximity outperformed physical similarity methods, particular with respect to model bias. The use of spatially distributed rainfall data did not improve model performance over the use of catchment average rainfall data. When models were locally calibrated there was a weak inverse correlation between catchment area and model performance. However, constraining donor-target parameter allocation by similar catchment area did not improve predictive capability in ungauged catchments. Although model performance was not as good as that reported for southern Australia and other temperate regions of the world, this study confirmed that modelling strategies similar to those

  9. Australia's TERN: Advancing Ecosystem Data Management in Australia

    Science.gov (United States)

    Phinn, S. R.; Christensen, R.; Guru, S.

    2013-12-01

    Globally, there is a consistent movement towards more open, collaborative and transparent science, where the publication and citation of data is considered standard practice. Australia's Terrestrial Ecosystem Research Network (TERN) is a national research infrastructure investment designed to support the ecosystem science community through all stages of the data lifecycle. TERN has developed and implemented a comprehensive network of ';hard' and ';soft' infrastructure that enables Australia's ecosystem scientists to collect, publish, store, share, discover and re-use data in ways not previously possible. The aim of this poster is to demonstrate how TERN has successfully delivered infrastructure that is enabling a significant cultural and practical shift in Australia's ecosystem science community towards consistent approaches for data collection, meta-data, data licensing, and data publishing. TERN enables multiple disciplines, within the ecosystem sciences to more effectively and efficiently collect, store and publish their data. A critical part of TERN's approach has been to build on existing data collection activities, networks and skilled people to enable further coordination and collaboration to build each data collection facility and coordinate data publishing. Data collection in TERN is through discipline based facilities, covering long term collection of: (1) systematic plot based measurements of vegetation structure, composition and faunal biodiversity; (2) instrumented towers making systematic measurements of solar, water and gas fluxes; and (3) satellite and airborne maps of biophysical properties of vegetation, soils and the atmosphere. Several other facilities collect and integrate environmental data to produce national products for fauna and vegetation surveys, soils and coastal data, as well as integrated or synthesised products for modelling applications. Data management, publishing and sharing in TERN are implemented through a tailored data

  10. Corner Reflectors as the Tie Between InSAR and GNSS Measurements: Case Study of Resource Extraction in Australia

    Science.gov (United States)

    Garthwaite, Matthew C.; Lawrie, Sarah; Dawson, John; Thankappan, Medhavy

    2015-05-01

    The combination of continuous Global Navigation Satellite System (GNSS) measurements over a sparse network of points covering Australia with relatively low frequency but high spatial density observations from Interferometric Synthetic Aperture Radar (InSAR) is fundamental to the new geodetic reference frame being developed for Australia. Recognising the economic importance of improved positional accuracy and the potential for geodetic tools to contribute to an understanding of energy related issues, the Australian Government has funded an innovative regional geodetic network of GNSS survey marks and co-located radar corner reflectors. This new network has been installed in the Surat Basin, Queensland where regional subsidence is expected due to significant resource extraction from the subsurface. In this contribution we present initial observations of the a-priori line-of-sight height error derived from corner reflector response in TerraSAR-X, Sentinel-1A, RADARSAT-2 and ALOS-2 SAR imagery of the Surat Basin.

  11. Coral reproduction in Western Australia.

    Science.gov (United States)

    Gilmour, James; Speed, Conrad W; Babcock, Russ

    2016-01-01

    Larval production and recruitment underpin the maintenance of coral populations, but these early life history stages are vulnerable to extreme variation in physical conditions. Environmental managers aim to minimise human impacts during significant periods of larval production and recruitment on reefs, but doing so requires knowledge of the modes and timing of coral reproduction. Most corals are hermaphroditic or gonochoric, with a brooding or broadcast spawning mode of reproduction. Brooding corals are a significant component of some reefs and produce larvae over consecutive months. Broadcast spawning corals are more common and display considerable variation in their patterns of spawning among reefs. Highly synchronous spawning can occur on reefs around Australia, particularly on the Great Barrier Reef. On Australia's remote north-west coast there have been fewer studies of coral reproduction. The recent industrial expansion into these regions has facilitated research, but the associated data are often contained within confidential reports. Here we combine information in this grey-literature with that available publicly to update our knowledge of coral reproduction in WA, for tens of thousands of corals and hundreds of species from over a dozen reefs spanning 20° of latitude. We identified broad patterns in coral reproduction, but more detailed insights were hindered by biased sampling; most studies focused on species of Acropora sampled over a few months at several reefs. Within the existing data, there was a latitudinal gradient in spawning activity among seasons, with mass spawning during autumn occurring on all reefs (but the temperate south-west). Participation in a smaller, multi-specific spawning during spring decreased from approximately one quarter of corals on the Kimberley Oceanic reefs to little participation at Ningaloo. Within these seasons, spawning was concentrated in March and/or April, and October and/or November, depending on the timing of the

  12. Pycnogonida from south-eastern Australia

    NARCIS (Netherlands)

    Stock, Jan H.

    1973-01-01

    Twenty species of Pycnogonida are recorded from shallow waters of the Australian states of Victoria and South Australia. Eight of these are new to science : Ammothea (Lecythorhynchus) ovatoides, Achelia transfugoides, Nymphon dubitabile, N. conirostrum, Pallenoides stylirostrum, Stylopallene longica

  13. The Goethe Institute with Implications for Australia

    Science.gov (United States)

    Garrick, Natalie

    1976-01-01

    The work of the Goethe Institute in teaching German to foreigners and in fostering interest in German culture is described. The desirability of a change in attitude in Australia toward foreign language study is discussed. (RM)

  14. Australia and the new reusable launch vehicles

    Science.gov (United States)

    Stalker, R. J.

    The new generation of reusable launch vehicles represented by ESA's Hermes and HOTOL, NASA's National Aerospace Plane, and the DFVLR's Saenger, promises to radically alter the economic basis of space flight by allowing such operations as the on-orbit servicing of satellites. Attention is presently drawn to the opportunities that arise for Australia's aerospace industry from the availability in Australia of two wind tunnel facilities capable of furnishing the requisite hypersonic aerothermodynamics testing capabilities for these vehicles' development.

  15. The Creeping Blight of Islamophobia in Australia

    OpenAIRE

    Linda Briskman

    2015-01-01

    In the latter months of 2014, following events in faraway Iraq and Syria, Australia responded forcefully at home. The manufactured fear of a terrorist attack resulted in police raids, increased counter-terrorism legislation and scare campaigns to alert the public to 'threat'. Although Islamophobia rose in Australia after 2001 it has been latent in recent years. It is on the rise again with collateral damage from government measures including verbal and physical attacks on Australian Muslims. ...

  16. The History of Oyster Farming in Australia

    OpenAIRE

    Nell, John A.

    2001-01-01

    Aboriginal Australians consumed oysters before settlement by Europeans as shown by the large number of kitchen middens along Australia's coast. Flat oysters, Ostrea angasi, were consumed in southeastern Australia, whereas both flat and Sydney rock oysters, Saccostrea glomerata, are found in kitchen middens in southern New South Wales (NSW), but only Sydney rock oysters are found in northern NSW and southern Queensland. Oyster fisheries began with the exploitation of dredge beds, for the use...

  17. Labour Market Outcomes in Regional Australia

    OpenAIRE

    Michelle Cunningham; Kathryn Davis

    2011-01-01

    Labour market outcomes in regional areas of Australia have followed broadly similar trends to those in capital cities over the past two decades. The range of unemployment rates across the regions narrowed through the 2000s, as the benefits of economic growth were spread broadly across the country. Nonetheless, there are still some notable differences between labour market outcomes in certain regions, partly reflecting the variation in industry structure across regional areas of Australia.

  18. The Changing Nature of Drought Risk in South-east Australia Over the Past Two Millennia

    Science.gov (United States)

    Kiem, A.; Ho, M. W.; Verdon-Kidd, D.

    2015-12-01

    The Murray-Darling Basin (MDB) is one of the most important food and fibre regions in Australia, producing one-third of the national food supply and exporting produce to many other countries. In total, the Basin contains about 40% of Australia's farms and 70% of Australia's irrigated land area. However, the MDB is also one of the most spatially and temporally variable river systems in the world, with severe droughts a regular occurrence over the ~100 years of instrumental record and decadal-scale droughts (e.g. "Federation" (~1895-1902), "World War II" (~1937-1945) and "Millennium" or "Big Dry" (~1997-2010) droughts) matched by flood dominated epochs (e.g. 1950s, 1970s). The accurate estimation of drought risk in the MDB is hampered by relatively short instrumental records and also by the complexity of the region's climate teleconnections with several large-scale ocean-atmospheric processes in the Pacific (El Niño Southern Oscillation, Interdecadal Pacific Oscillation), the Indian (Indian Ocean Dipole) and Southern Oceans (Southern Annular Mode). Climate-sensitive paleoclimate records provide an opportunity to resolve hydroclimatic variability over long time periods prior to the availability of instrumental records and therefore offer the potential for improved quantification of risks associated with hydroclimatic extremes. However, the MDB, as with many regions in Australia, currently lacks suitable in situ proxies necessary to do this. Therefore, remote paleoclimate rainfall proxies in the Australasian region spanning are used to develop new reconstructions of MDB rainfall over the Common Era (CE) (i.e. approximately the past 2000 years). The nature of MDB dry epochs from 749BCE to 1981CE are then compared with the frequency and duration of droughts recorded in instrumental records (i.e. approximately the past 100 years). Importantly, the results show that the probability of decadal scale droughts is three times greater than instrumental records suggest.

  19. Alternative Water Allocation in Kyrgyzstan: Lessons from the Lower Colorado River Basin and New South Wales

    Directory of Open Access Journals (Sweden)

    Nazir Mirzaev

    2010-08-01

    Full Text Available Focus group discussions and a modeling approach were applied to determine policy and regulatory refinements for current water allocation practices in Kyrgyzstan. Lessons from the Lower Colorado River basin, Texas and New South Wales, Australia were taken into consideration. The paper analyzes the impact of adopting some of these interventions within the socio-environmental context that currently prevails in Kyrgyzstan. The optimization model for water distribution at the river-basin scale was developed using GAMS 2.25 software. Application of the model to the Akbura River basin indicated efficiencies in the proposed institutional rules especially in low water years.

  20. Industrial Radiography Safety in Australia

    International Nuclear Information System (INIS)

    cumbersome and often exceeds the prescribed OH and S single person lifting limits. The role of industrial radiography has expanded to inspect not only welds and castings, so that it now includes inspection of assembled and processed goods ranging from automotive air-bags to canned food. It is also used in security systems at airports and other facilities. Almost all these applications use cabinet systems which are rarely the subject of serious radiation incidents or accidents. Gamma ray inspection no longer uses radium. The most common radio-isotopes in use now are Cobalt 60 and Iridium 192. Their freedom from the need for an electrical power supply; their high radiation energy and the ability to place a source in positions of limited physical access, ensures the ongoing attraction of the method. The useful activity ranges of typical sources vary according to their application and the effect on total inspection costs. Common source activities in Australia range between 185 and 370 GBq for Cobalt 60; and between 1500 and 3700 GBq for Iridium 192. Outside Australia however there are recent reports of routine industrial radiography using more than 5500 GBq of Iridium 192. Thus it can be appreciated that any radiation accidents involving these high activity sources have the potential for significant radiation doses. Personal Dose Data: ARPANSA and its predecessor, the Australian Radiation Laboratory, has been providing a personal radiation monitoring service for some time, and releases a summary report every few years (ARPANSA/TR 139, ARL/TR 121, ARL/TR 107). The selected data shown in Table 2 indicate a downward trend in occupational doses received by industrial radiographers working in open site situations, which are potentially the most hazardous. This trend is encouraging, especially when the number of industrial radiographers is increasing. A comparison of the ARPANSA data indicate that whilst the average Australian industrial radiographer's annual dose is higher than the

  1. Return migration from Australia: a case study.

    Science.gov (United States)

    Lukomskyj, O; Richards, P

    1986-09-01

    "The study investigates the departure from Australia of former settlers who arrived during the 1980 calendar year. The 1980 settler arrival cohort [consists] of 75,167 visaed migrants.... The study has three main aims: (i) to analyse departures from Australia of the 1980 settler arrival cohort with a view to gauging the success of Australia's immigration program in retaining settlers; (ii) to examine the retention rates of settlers with respect to characteristics...including age, sex, marital status, country of last residence, and settler eligibility category; and (iii) to consider implications of the findings." Australia's present immigration policy is discussed, previous research on return migration from Australia is summarized, and a detailed analysis of the departure data is presented. "This study found that by August 1984, 12.4 per cent of non-refugee settlers who arrived in Australia during 1980 had departed permanently but that only 0.6 per cent of the 1980 refugee cohort had done so." These figures represent a decline in immigrant departure rates since the 1960s and early 1970s. Small differences in departure rates by place of birth, age, and marital status, which may have demographic consequences if sustained over time, are noted. (SUMMARY IN FRE AND SPA)

  2. Nuclear regulation in Australia - future possibilities

    Energy Technology Data Exchange (ETDEWEB)

    Carlson, J.; Bardsley, J. [Department of Foreign Affairs and Trade, Canberra, ACT (Australia). Australian Safeguards Office

    1997-12-31

    Australia`s current nuclear regulatory arrangements reflect two major factors: that we are a federation, with a constitutional division of powers between the Commonwealth and the States, and that we have no nuclear industry, other than uranium mining. Australia`s only nuclear facilities are operated by a Commonwealth instrumentality, ANSTO. Current Commonwealth regulatory arrangements are a response to international treaty commitments -principally the NPT (Treaty on the Non-Proliferation of Nuclear Weapons) -and to the commencement of commercial uranium mining and export in the late 1970`s. Although at present no nuclear industry activities, other than mining, are in prospect, this might not always be the case, and with the establishment of ARPANSA (the Australian Radiation Protection and Nuclear Safety Agency) it is timely to give some thought to regulatory arrangements which might be appropriate to Australia`s future circumstances. This paper will discuss the regulation activities relating to the nuclear fuel cycle , i e activities involved with the production and use of nuclear materials (uranium, thorium and plutonium) for the generation of energy through nuclear fission.

  3. 5-氨基酮戊酸光动力疗法(ALA-PDT)治疗老年面部BOWen病的疗效观察%Evaluation of Photadynamic Therapy for Bowen's disease on faces with 5-Aminolevulinic acid

    Institute of Scientific and Technical Information of China (English)

    颉玉胜; 彭学标; 范文成; 宋维旭; 马爱红

    2011-01-01

    目的:观察5-氨基酮戊酸光动力疗法(ALA-PDT)治疗老年面部Bowen病的疗效和美容效果.方法:对10例年龄大于65岁、患高血压、糖尿病或不愿手术治疗的Bowen病患者面部皮损进行ALA-PDT治疗.结果:10例Bowen病患者的18个皮损获得完全缓解,1例复发,复发率10%.结论:对老年面部Bowen病,ALA-PDT是一种痛苦小、疗效好、无瘢痕形成、复发率低、美容效果好的治疗方法.%Objective To observe the efficacy and cosmetic results of ALA-PDT treatment for Bowen's disease on faces.Methods 10 cases of patients with facial lesions who aged over 65 years, suffered from high blood pressure,diabetes or unwilling to surgical treatment were treated by ALA-PDT.Results 18 facial lesions from these 10 cases of patients with Bowen's disease achieved complete remission, 1 case was recurred with 10% of the recurrence rate.Conclusion For those elderly patients with Bowen's disease on the face, ALA-PDT is a excellent treatment with little pain, better efficacy, no scar formation, low recurrence rate, and good cosmetic results

  4. 银屑病合并鲍恩病患者皮损中检出多种类型HPV一例%A Case of Psoriasis Accompanied by Bowen's Disease, Detection of Human Papillomavirus DNA

    Institute of Scientific and Technical Information of China (English)

    魏烨平; 哈达; 孔迎辉; 郑淑云

    2013-01-01

    目的:探讨人乳头瘤病毒在银屑病合并多发鲍恩病患者皮损中的检出状况.方法:对病理确诊的一例银屑病合并多发鲍恩病的多个皮损分别进行DNA提取,采用巢式PCR方法进行HPV的DNA检测.结果:面部银屑病皮损有两种类型HPV检出,分别为HPV3型和23型,大腿部银屑病皮损中除了HPV3型和HPV23型被检出以外,尚有HPV38型,75型,82型,FA1型和FA2型等多种HPV类型被检出,阴茎部位鲍恩病皮损中有两种类型检出,分别是66型和82型.结论:银屑病长期应用免疫抑制剂治疗,可能导致HPV不显性感染,而反复多发的鲍恩病可能与多种类型的HPV感染密切相关.%Objective: To detect human papillomavirus infection in a case of psoriatic patient accompanied by multiple genital Bowen's disease. Methods: The DNA extractives from psoriasis and Bowen's disease lesions of the patient were employed for HPV DNA by nested-PCR. Results: Two types of HPV were detected from the psoriatic lesion on the face, one showed HPV3 and the other showed HPV23, besides the two types mentioned aboved, many types of HPV such as HPV38, HPV75, HPV82, HPVFA1 and HPVFA2 were detected in the psoriatic lesions on the thigh. In the Bowen's disease lesion of the penis, HPV66 and HPV82 were found positive. Conclusion: Application of long-term immunosupressants in the treatment of psoriasis may contribute to inapparent infection of HPV, while infection of several types of HPV may be closely associated with recurrent and multiple Bowen disease.

  5. Immigration in two federations: Canada and Australia.

    Science.gov (United States)

    Atchison, J

    1988-03-01

    The need for increasingly widespread application of a policy or program, settlement, and multiculturalism is urgent in both Canada and Australia. For both countries there is a clear pattern of coalescence and divergence and the distinct growth of immigration as a federal function. While Australia has strengthened federal functions in a area of increasingly geo-political need, Canada is moving towards a looser model of federalism. By 1918 both countries were strengthening their federal functions in immigration as discussions within the British Empire on the recommendations of the 1917 Dominions Royal Commission took root. Both countries were interested in agricultural immigration and land settlement. The Great Depression caused a major reduction in population growth rates. From 1933-1948 Canada had a poor record of providing sanctuary for Jews. In Australia, however, Jewish voluntary agencies were aiding the reception of refugees by 1937. The 1st permanent embodiment of commonwealth jurisdiction over immigration was the establishment of an Immigration Branch within the Department of Interior around 1938. Australia needed extra population for defense. The major structural link between government and the immigrant communities was through the Good Neighbor Movement, which began on a nationwide basis in 1950. Both Canada and Australia are major receiving countries for refugees. In 1973 Australia reached the position of effective, practical nondiscrimination achieved by Canada in 1967. Prime Minister Trudeau's policy was multiculturalism within a framework of bilingualism. By 1978 Australia had a new federalism policy, which in all areas concerned with immigrants, refugees and ethnicity, rationalized resources allocation and imposed a political philosophy. The foci of multiculturalism in Australia are 1) community languages; 2) creation of a tolerant, non-discriminatory society; and 3) equity and participation. In 1978 Australia specified population replacement and

  6. Surface Soil Moisture Assimilation From ASAR Imagery for Root Zone Moisture Predictions at Basin Scale

    Science.gov (United States)

    Caschili, A.; Montaldo, N.; Mancini, M.; Albertson, J. D.; Botti, P.; Dessena, M. A.; Carboni, E.

    2003-12-01

    Bowen ratio station), and spatially distributed soil moisture ground-truth data needed to assess the ASAR imagery are collected over the whole basin through the TDR technique and the gravimetric method. The objectives of this work are to: 1) test the high resolution ASAR imagery accuracy for producing maps of surface soil moisture patterns at the catchment scale, 2) develop and test an operational assimilation system for robust root-zone soil moisture predictions at the basin scale. The developed assimilation system will have two components, 1) ASAR observations will be merged with the model for robust surface soil moisture estimates though the Ensemble Kalman Filter, and 2) the surface soil moisture estimates will then drive an assimilation engine for robust root-zone soil moisture predictions.

  7. Unlocking Australia's Language Potential. Profiles of 9 Key Languages in Australia. Volume 7: Japanese.

    Science.gov (United States)

    Marriott, Helen; And Others

    The report on the status of Japanese language teaching in Australia gives a broad view of Japanese study and discusses current educational issues in some detail. An introductory chapter offers a brief overview of the history, objectives, and issues of Japanese language instruction in Australia. The second chapter details features of instructional…

  8. The renewable energy market in Australia

    International Nuclear Information System (INIS)

    Australia is committed to an 8 per cent reduction in its emissions of greenhouse gases above 1990 levels as a result of the Kyoto Protocol for the period 2008-2012. At present, the emissions stand at 17.4 per cent above 1990 levels. Total electrical power in Australia resulting from renewable energy is in the order of 10.5 per cent. A mandatory renewable energy target of 9500 gigawatt hour (GWh) of extra renewable energy is to be produced annually by 2010, under the Renewable Energy (Electricity) Act. An emissions trading system has been implemented, involving one renewable energy certificate (REC) created for each megawatt hour of renewable energy generated. A significant expansion of the demand for renewable energy is expected in Australia over the next ten years, according to the Australian Greenhouse Office. Increased opportunities for local and international firms operating in the field of renewable energy are being created by the Australian government through initiatives such as the Renewable Energy Commercialization Program, and the Renewable Remote Power Generation Program. Solar, biomass, and wind power are comprised in the wealth of renewable energy resources in Australia. The market remains largely undeveloped. Firms from the United States and the European Union are the leading exporters of renewable energy technology to Australia. Public utilities and independent power producers having entered the deregulated electricity market are the consumers of renewable energy technology and services. A country with minimal duties in most cases, Australia has much in common with Canada, including similar regulatory and legal systems. Australia applies a 10 per cent goods and services tax, which would apply to Canadian exports. It was advised to consult the Australian Customs Service for additional information concerning duties that might be applicable to the renewable energy industry. 28 refs., 3 tabs

  9. On the role of buoyancy force in the ore genesis of SEDEX deposits: Example from Northern Australia

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Finite element modeling on a highly conceptualized 2-D model of fluid flow and heat transport is un-dertaken to simulate the paleo-hydrological system as if the Mount Isa deposits were being formed in the Mount Isa basin, Northern Australia, and to evaluate the potential of buoyancy force in driving ba-sin-scale fluid flow for the formation of sedimentary-exhalative (SEDEX) deposits. Our numerical case studies indicate that buoyancy-driven fluid flow is controlled mainly by the fault penetration depth and its spatial relation with the aquifer. Marine water recharges the basin via one fault and flows through the aquifer where it is heated from below. The heated metalliferous fluid discharges to the basin floor via the other fault. The venting fluid temperatures are computed to be in the range of 115 to 160℃, with fluid velocities of 2.6 to 4.1 m/year over a period of 1 Ma. These conditions are suitable for the formation of a Mount Isa-sized zinc deposit, provided a suitable chemical trap environment is present. Buoyancy force is therefore a viable driving mechanism for basin-scale ore-forming hydrothermal fluid migration, and it is strong enough to lead to the genesis of supergiant SEDEX deposits like the Mount Isa deposit, Northern Australia.

  10. On the role of buoyancy force in the ore genesis of SEDEX deposits: Example from Northern Australia

    Institute of Scientific and Technical Information of China (English)

    YANG JianWen; FENG ZuoHai; LUO XianRong; CHEN YuanRong

    2009-01-01

    Finite element modeling on a highly conceptualized 2-D model of fluid flow and heat transport is un-dertaken to simulate the paleo-hydrological system as if the Mount Ise deposits were being formed in the Mount Isa basin, Northern Australia, and to evaluate the potential of buoyancy force in driving ba-sin-scale fluid flow for the formation of sedimentary-exhalative (SEDEX) deposits. Our numerical case studies indicate that buoyancy-driven fluid flow is controlled mainly by the fault penetration depth and its spatial relation with the aquifer. Marine water recharges the basin via one fault and flows through the aquifer where it is heated from below. The heated metalliferous fluid discharges to the basin floor via the other fault. The venting fluid temperatures are computed to be in the range of 115 to 160℃, with fluid velocities of 2.6 to 4.1 m/year over a period of 1 Ma. These conditions are suitable for the formation of a Mount Isa-sized zinc deposit, provided a suitable chemical trap environment is present. Buoyancy force is therefore a viable driving mechanism for basin-scale ore-forming hydrothermal fluid migration, and it is strong enough to lead to the genesis of supergiant SEDEX deposits like the Mount Isa deposit, Northern Australia.

  11. Bower ratio-energy balance associated errors in vineyards under dripping irrigation Erros associados pela razão de bowen ao balanço de energia em parreirais sob irrigação por gotejamento

    Directory of Open Access Journals (Sweden)

    José Monteiro Soares

    2007-08-01

    Full Text Available This study was conducted at the Bebedouro Experimental Station in Petrolina-PE, Brazil, to evaluate the errors associated to the application of the Bowen ratio-energy balance in a 3-years old vineyard (Vitis vinifera, L, grown in a trellis system, irrigated by dripping. The field measurements were taken during fruiting cycle (July to November, 2001, which was divided into eigth phenological stages. A micrometeorological tower was mounted in a grape-plants row in which sensors of net radiation, global solar radiation and wind speed were installed at about 1.0 m above the canopy. Also in the tower, two psicometers were installed at two levels (0.5 and 1.8 m above the vineyard canopy. Two soil heat flux plates were buried at 0.02 m beneath the soil surface. All these sensors were connected to a Data logger 21 X of Campbell Scientific Inc., programmed for collecting data once every 5 seconds and storage averages for every 15 minutes. A comparative analysis were made among four Bowen ratio accepting/rejecting rules, according to the methodology proposed by Spano et al. (2000: betar1 - values of beta calculated by Bowen (1926 equation; betar2 - values of beta as proposed by Verma et al. (1978 equation; betar3 - exclusion of the beta values obtained as recommended by Unland et al. (1996 and betar4 - exclusion of the beta values calculated as proposed by Bowen (1926, out of the interval (-0.7 Este estudo foi conduzido na Estação Experimental de Bebedouro, Petrolina-PE, Brasil, para avaliar os erros associados com a aplicação do balanço de energia com base na razão de Bowen em um parreiral (Vitis vinifera, L com três anos de idade, conduzido em latada, sob irrigação por gotejamento. As medições foram feitas durante o ciclo produtivo de julho a novembro de 2001, que foi dividido em oito estádios fenológicos. Numa torre micrometeorológica localizada no centro do parreiral, foram instalados a 1,00 m acima do dossel da videira, os seguintes

  12. A Case of Psoriasis Combined with Multiple Bowen's Disease and Souamous Cell Carcinoma%银屑病伴发多发Bowen病及鳞状细胞癌1例

    Institute of Scientific and Technical Information of China (English)

    王佳媚; 张多文; 宁舒鹏; 王剑锋; 郭建魁; 哈小琴; 杨桂兰

    2012-01-01

    患者女,50岁.周身反复出现鳞屑性红斑伴瘙痒30年,右臀出现菜花状肿物1年.有银屑病病史30年,予UVA照射治疗70余次.手术切除右臀肿物,组织病理示鳞状细胞癌和Bowen病.诊断:银屑病;鳞状细胞癌;Bowen病(多发).%A 50-year-old female, the whole body had appeared repeated scaly erythema with itching for 30 years, and () hip had appeared cauliflower-like tumor for 1 year. The patient had 30 years history of psoriasis, () accepted UVA irradiation treatment for more than 70 times. The tumor on the right hip was resected and the histopathological examination showed squamous cell carcinoma and Bowen ' s disease. Diagnosis; Psoriasis; Squamous cell carcinoma; Bowen's disea.se( multiple lesions).

  13. Commercialisation of science in Australia

    International Nuclear Information System (INIS)

    and the business proposition have merit - government assistance (e.g. BIF, R and D Start, STI funding) and some type of relationship with Big Pharma/Big Biotech provide assurances. In the life sciences, durable and strong IP is critical. This presentation will focus on choice of commercialisation strategy (i.e. licensing vs. start up vs. joint venture etc); the hazards of 'expropriation' for the small end of town; little c versus big C commercialisation; creating value in the biopharmaceutical sector; and persistent restraints to innovation in Australia

  14. SUSTAINABLE DEVELOPMENT AND GREEN TRANSPORT IN AUSTRALIA

    Directory of Open Access Journals (Sweden)

    MURAT SARI

    2015-06-01

    Full Text Available Environmental pollution is one of the main restrictions of sustainable development. We examine whether or not freight transport is sensitive of the environment in Australia, particularly in the state of Victoria. Because, freight transports is one of the significant factors of environmental pollution. In the study we discuss the decision taken by the government of Victoria; and what kind of measurement is applied by the government. We also discuss which policy should be followed to achieve green transportation. The aim of the study is to determine the effects of environmental measurement on growing of the transport sector. The economics of Australia has a structure growing fast, in order to parallel the increasing growth of the transport sector. It tries to apply Kyoto protocol to the transport sector. In conclusion, the environmental pollution and CO2 emissions decrease in Australia although the transport sector grows day by day.

  15. Institutional impediments to population policy in Australia.

    Science.gov (United States)

    Mcnicoll, G

    1995-11-01

    Despite having almost the highest rate of population growth among OECD countries, Australia has no explicit population policy. The potential elements of such a policy, especially with regard to immigration, family, and environment, are deeply entrenched in separate political domains and responsive to separate clusters of interests. Vague, demographically ill-informed, and mutually inconsistent views of a desired population size or trajectory for Australia co-exist, with no arena for any systematic engagement and considered debate among them. Parallels to the case of Australia can be drawn with Canada and the US. Population policy may well be one of the issues that modern liberal democracies find particularly difficult to manage. There are, however, also specific historical circumstances which led to the outcome and perpetuate the situation. Population processes and the institution of citizenship, and contested policy domains are discussed. PMID:12321981

  16. Leber hereditary optic neuropathy in Australia.

    Science.gov (United States)

    Mackey, D A; Buttery, R G

    1992-08-01

    Leber hereditary optic neuropathy (LHON) presents with sudden onset of visual loss mainly in young adult males. LHON is not uncommon in Australia, accounting for 2% of invalid blind pensions. We have identified 20 unrelated families carrying mitochondrial DNA mutations associated with LHON and 135 of 291 individuals with documented LHON are currently alive in Australia. The mean age of onset of visual loss for males was 26 years and for females 27 years, with a range from six to 65 years. The mean risk of visual loss was 20% for males and 4% for females. There are over 1750 male and female carriers living in Australia who have not yet lost vision; 600 carriers are under 24 years of age. The expected number of new cases of blindness from LHON is three to four per year. PMID:1449769

  17. Recommendations for an energy policy for Australia

    International Nuclear Information System (INIS)

    Over the next few years, Australia must modify its dependence on natural oil and place greater reliance on other fossil fuels and renewable energy sources. The recommendations contained in this report are the result of two years of study, and the long term energy prospects for Australia and energy resource policies for coal, liquid fuels, nuclear energy, solar energy and natural gas are considered in detail. Energy conservation policies and the identification of areas where energy research, development and demonstration need to be undertaken are also covered. (J.R.)

  18. The Creeping Blight of Islamophobia in Australia

    Directory of Open Access Journals (Sweden)

    Linda Briskman

    2015-10-01

    Full Text Available In the latter months of 2014, following events in faraway Iraq and Syria, Australia responded forcefully at home. The manufactured fear of a terrorist attack resulted in police raids, increased counter-terrorism legislation and scare campaigns to alert the public to 'threat'. Although Islamophobia rose in Australia after 2001 it has been latent in recent years. It is on the rise again with collateral damage from government measures including verbal and physical attacks on Australian Muslims. Vitriol is also directed at asylum seekers and refugees. Media, government and community discourses converge to promote Islam as dangerous and deviant.

  19. UV/EB curing in Australia

    International Nuclear Information System (INIS)

    Progress in LTV/EB curing is reviewed in Australia. Generally the technology is used by those industries where curing is well developed in Europe and North America, however the scale is an order of magnitude lower due to the smaller market size. The Asian economic crisis does not appear to have affected expansion of the technology in Australia. EB continues to be successfully used in the packaging and foam fields whilst in UV, security devices, particularly banknotes are steadily expanding especially in export markets have been studied

  20. Australia China Friendship Society Supports Beijing Olympics

    Institute of Scientific and Technical Information of China (English)

    Tom Loy

    2008-01-01

    <正>Editor’s note: The following is the full text of a letter CPAFFC Vice President Li Xiaolin received on May 5 from Australia: Dear Madam Li Xiaolin, As the national body representing friendship between Australia and China, we confirm our strongest support for the Olympic Torch Relay and Beijing’s hosting of the Olympic Games. Considering the difficulties that have been occurring and controversial media coverage we believe that China has set a good example. The Torch Relay has been a success in its own right and we are confident that the Olympic Games will be successful.

  1. Status of Women In Physics in Australia

    Science.gov (United States)

    Foley, C. P.

    2009-04-01

    The status of women in physics is Australia has remained mostly steady until recently, with the appointment of several eminent women in major government of public roles. Australia seems to maintain the same gender ratio for those studying and working in physics. There is no overall coordination of programs to assist women into the workplace but there is generally goodwill. Success in attracting and retaining women in the physics workforce appears to depend on the local culture, initiatives, and attitude of the most senior person in the organization.

  2. Reengineering in Australia: factors affecting success

    Directory of Open Access Journals (Sweden)

    Felicity Murphy

    1998-11-01

    Full Text Available Business process reengineering (BPR is being used in many organisations worldwide to realign operations. Most of the research undertaken has been focused on North American or European practices. The study reported here replicates a US reengineering study in an Australian context by surveying large public and private sector Australian organisations. The study makes three main contributions by: (1 presenting a picture of BPR practices in Australia, (2 clarifying factors critical to the success of reengineering projects in Australia, and (3 providing a comparison of factors leading to success in Australian BPR projects with those found in the US.

  3. “Water Poverty” in Australia

    OpenAIRE

    Gray, Janice

    2013-01-01

    Background Coleridge’s well known words from the Ancient Mariner, ‘Water, water, everywhere/ nor any drop to drink’ have strong resonances for Australia which is an island country and, by definition, surrounded by undrinkable sea water. The bulk of Australia’s population is huddled into a belt of arable land on the coastal perimeter of the nation, while its vast dry inland area remains only sparsely populated. Australia is, on many indicators, a rich island. It is highly industrialised. It ru...

  4. Achelia shepherdi n. sp. and other Pycnogonida from Australia

    NARCIS (Netherlands)

    Stock, Jan H.

    1973-01-01

    Records of 10 species of shallow water Pycnogonida from Western Australia, Victoria, Tasmania, and New South Wales, including Achelia shepherdi n. sp., Parapallene avida Stock, 1973 (♀ new to science), and Anoplodactylus pulcher Carpenter, 1907 (new to Australia).

  5. CPAFFC Delegation Attends Annual Conference Of Australia Sister Cities Association

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    <正>At the invitation of the Australia Sister Cities Association(ASCA),the CPAFFC delegation visited Australia and attended the Annual Conference of ASCA in Devonport of Tasmania State from November 11 to 22,2006.

  6. A Case of Language Revitalisation in "Settled" Australia.

    Science.gov (United States)

    Walsh, Michael

    2001-01-01

    Presents a case of language revitalisation in "settled" Australia, considers the nature of the language ecology in indigenous Australia, and advances some of the reasons for the success of this case of language revitalization. (Author/VWL)

  7. ICI Australia Ltd. selects Linde for botany ethylene cracker contract

    Energy Technology Data Exchange (ETDEWEB)

    1980-03-24

    In cooperation with Davy McKee, Linde will provide design, procurement, and construction services for ICI Australia's 250,000 ton/yr ethylene cracker at Botany, N.S.W., which will form the basis of a $400 million (Aust.) plastics and petrochemical facilities expansion project at the site. The new plant will initially use naphtha feedstock from nearby refineries but will also be designed to use other domestic resources, particularly LPG from the Bass Strait or Cooper Basin when a new pipeline from the latter is completed. When completed in the first quarter of 1983, the cracker will supply existing 70,000 ton/yr low-density polyethylene and 25,000 ton/yr ethylene oxide plants, which are now being debottlenecked at the site. These plants are now supplied with 20,000 tons/yr each of ethylene by Showa Yuka K.K. and Tonen Petrochemical. Showa Denko K.K. has started delivery of the first 3600 tons of ethylene under a new 20,000 ton/yr supply deal over the next three years. ICI plans to build a second $500 million (Aust.) ethylene plant at Point Wilson, Victoria, for completion in 1985 to supply caustic soda, chlorine, ethylene dichloride, and vinyl chloride units.

  8. Bacterial assemblages in rivers and billabongs of Southeastern Australia.

    Science.gov (United States)

    Boon, P I

    1991-12-01

    Billabongs, lentic waterbodies common to the floodplain of Australian rivers, differ considerably from the lotic riverine environment in terms of hydrology, physiochemical characteristics, and biological assemblages present. As little is known regarding the bacterial ecology of billabong habitats, a comparison was made of the bacterial assemblages in the water column of seven paired river/billabong sites in the Murray-Darling Basin of southeastern Australia. Billabongs supported larger populations of bacteria (1-157×10(9) cells liter(-1); 11-10,270 μg C liter(-1)) than did rivers (1-10×10(9) cells liter(-1); 6-143 μg C liter(-1)). Phospholipid analyses confirmed that billabongs (14-111 μg phospholipid fatty acid liter(-1)) had larger bacterial populations than rivers (billabongs (0.28-3.05 μg C liter(-1) hour(-1)) than rivers (0.05-0.62 μg C liter(-1) hour(-1)). Production calculated from the frequency of dividing cells confirmed this conclusion, and suggested bacterial production in some billabongs could exceed 100 μg C liter(-1) hour(-1). An INT-formazan method indicated that usually billabongs, and the cell-specific activity greater for billabong than river assemblages. The factors most likely to be responsible for the differences between the bacterial assemblages in rivers and billabongs relate to hydrological regime and the availability of organic carbon substrates. PMID:24194324

  9. The Fluctuating Political Appeal of Water Engineering in Australia

    Directory of Open Access Journals (Sweden)

    Lin R. Crase

    2009-10-01

    Full Text Available Like many nations, Australia has a mixed history with water engineering. For over a century the engineer was 'king' and water was harnessed as a vehicle for settling the harsh inland, creating wealth and building prosperity. By the 1960s it was becoming increasingly clear that this approach was not without its flaws. Mounting evidence of environmental degradation emerged in the 1970s and the trend towards fiscal responsibility in the 1980s subjected the engineering approach to even greater scrutiny. These events set the context for a series of water policy reforms that commenced in earnest in the early 1990s. Initially, the reforms favoured greater use of economic incentives and focussed attention on the ecological impacts of water management. In this environment, the status of the engineer was transformed from 'king' to 'servant'. However, the engineering profession was not to hold this status for long and the political difficulties of simultaneously dealing with the economics and ecology of water quickly became the rationale for reverting to engineering solutions. This paper traces these historical events and focusses specifically on the politically vexing issues that arise when water reallocation is attempted in a fully allocated basin.

  10. Expressions of PDCD4 and survivin in condyloma acuminatum, Bowenoid papulosis,Bowen disease and squamous cell carcinoma%PDCD4和 survivin 在尖锐湿疣、鲍恩样丘疹病、Bowen 病及鳞状细胞癌皮损中的表达

    Institute of Scientific and Technical Information of China (English)

    于淑萍; 李雪飞; 王丹; 王玉坤

    2015-01-01

    Objective To explore the expressions of programmed cell death 4 (PDCD4)and survivin in patients with condyloma acuminatum (CA),Bowenoid papulosis (BP),Bowen disease (BD)and squamous cell carcinoma (SCC).Methods The expressions of PDCD4 and survivin were detected in normal foreskin (n =10),CA (n =30), BP (n =28),BD (n =10)and SCC (n =11 )with immunohistochemical techniques.Results The expression of PDCD4 in BP,BD and SCC was significantly lower than that in foreskin control (P <0.05),and it was lower in SCC than in CA (P <0.05).The expression of survivin in both BD and SCC was significantly higher than that in control (P <0.05),and it was higher in SCC than in CA (P <0.05).Conclusions PDCD4 can inhibit benign neoplasms from malignant transformation.The overexpression of survivin can inhibit cell apoptosis and promote proliferation.%目的:探讨程序性细胞凋亡因子4(PDCD4)和生存素(survivin)在尖锐湿疣(CA)、鲍恩样丘疹病(BP)、Bowen 病(BD)、鳞状细胞癌(SCC)皮损中的表达及临床意义。方法采用免疫组化 MaxVision 方法检测 CA 组30例、BP 组28例、BD 组10例、SCC 组11例皮损和正常对照组10例中 PDCD4及 survivin 的表达。结果①BP组、BD 组和 SSC 组皮损中 PDCD4表达均较正常对照组低(P <0.05),SCC 组较 CA 组表达低(P <0.05),其余各组间比较差异无统计学意义(P >0.05);②survivin 在 BD 组和 SCC 组的表达高于正常对照组,SCC 组高于 CA组,差异均有统计学意义(P <0.05),其余各组间差异无统计学意义(P >0.05)。结论PDCD4有抑制细胞异常增殖的作用,在皮肤良性增殖性疾病向恶性皮肤肿瘤的转化中发挥一定抑制作用;survivin 过度表达可抑制细胞凋亡、促进细胞增殖。

  11. Estimativa do balanço de energia em cambarazal e pastagem no norte do Pantanal pelo método da razão de Bowen Estimate of energy balance in cambarazaland pasture in the north of Pantanal by Bowen ratio method

    Directory of Open Access Journals (Sweden)

    Marcelo Sacardi Biudes

    2009-06-01

    Full Text Available O estudo do balanço de energia de uma superfície vegetada e a atmosfera é importante para caracterizar o microclima local, identificar interações entre variáveis ambientais e a vegetação, e identificar efeitos das atividades antropogênicas. O objetivo deste trabalho foi estimar a variação sazonal do balanço de energia pelo método da razão de Bowen em uma área de vegetação monodominante de Cambará na RPPN SESC-Pantanal e uma área de pastagem na Fazenda Experimental da UFMT. Os componentes do balanço de energia apresentaram sazonalidade, com maiores médias na estação chuvosa nas duas áreas de estudo. No cambarazal houve maior variação do fluxo de calor latente da estação seca para a chuvosa que na pastagem. Entretanto, a variação sazonal do fluxo de calor sensível foi menor no cambarazal que na pastagem, devido ao efeito termo-regulador do cambarazal, em função da maior biomassa. A energia disponível aos dois sítios foi destinada prioritariamente em fluxo de calor latente, 80,0% no cambarazal e 56,6% na pastagem, seguido pelo fluxo de calor sensível, 19,1 e 42,9%, e pelo fluxo de calor no solo, 0,3 e 7,2%.The energy balance study of a vegetated surface and atmosphere is important to characterize the local microclimate, identify interactions among environmental variables and the vegetation and to identify anthropogenic activities effects. The objective of this work was estimate the seasonality of energy balance by Bowen ratio method in a monodominant vegetation of Cambará area in the RPPN SESC-Pantanal and a pasture area in UFMT's Experimental Farm. The energy balance components presented seasonality, with larger averages at the rainy station in two areas of study. In the cambarazal was a higher variation of the latent heat flux of the dry season for the rainy season that in the pasture. However, the seasonal variation of the sensible heat flux in the cambarazal was lower than in the pasture, due to the thermo

  12. 76 FR 65988 - Importation of Mangoes From Australia

    Science.gov (United States)

    2011-10-25

    ... importation of fresh mangoes from Australia into the continental United States. As a condition of entry, the... the United States. The national plant protection organization (NPPO) of Australia has requested that... from Australia to be imported into the continental United States. As part of our evaluation...

  13. 76 FR 81401 - Importation of Litchi Fruit From Australia

    Science.gov (United States)

    2011-12-28

    ... shipments of litchi fruit from Australia into the continental United States, except Florida. As a condition... into the continental United States. As part of our evaluation of Australia's request, we prepared a... litchi fruit with up to 5 millimeters of stem into the continental United States from Australia....

  14. Internationalization in Australia and Canada: Lessons for the Future

    Science.gov (United States)

    Shaw, Kelly

    2014-01-01

    This paper examines the internationalization of postsecondary education in Australia and Canada. The author discusses the contextual similarities and differences between the two countries, the shifting rationale "from aid to trade" behind Australia's internationalization attempts and some of the reasons for Australia's success.…

  15. Library Development: Australia. IATUL Proceedings Vol. 15, 1983.

    Science.gov (United States)

    Fjallbrant, Nancy, Ed.

    1983-01-01

    This issue of the IATUL (International Association of Technological University Libraries) Proceedings focuses on developments in Australian libraries. The first article, "University Librarianship in Australia" (D. H. Borchardt), reviews the growth of librarianship in Australia and examines some current issues. "Information Retrieval in Australia"…

  16. Sex Education in South Australia: The Past and the Present

    Science.gov (United States)

    Talukdar, Joy; Aspland, Tania; Datta, Poulomee

    2013-01-01

    In South Australia, sex education has been controversial since its inception. The Australasian White Cross league and the Family Planning Association of South Australia were the pioneers of sex education in South Australia. The framing of a national framework and the implementation of the SHARE (Sexual Health and Relationships Education) project…

  17. 77 FR 35353 - Biotech Life Sciences Trade Mission to Australia

    Science.gov (United States)

    2012-06-13

    ... International Trade Administration Biotech Life Sciences Trade Mission to Australia AGENCY: International Trade... Biotech Life Sciences trade mission to Australia, October 29-November 2, 2012. The mission to Australia is... prominent biotech organizations, government meetings, and briefings and receptions during the...

  18. Next Target: To Plant Cotton in Australia%Next Target: To Plant Cotton in Australia

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    China textile enterprises turn their sight to the largest and the best cotton farm in Australia for the use of local resource advantages, including perfect dams, low cost planting conditions, and high quality cotton.

  19. Medical e-commerce for regional Australia.

    Science.gov (United States)

    Kumar, D K; Mikelaitis, P

    2001-12-01

    The residents of rural and regional Australia have less access to health care services than in capital cities. There is a reluctance of General Practitioners to practice in the country. New information technology and government initiatives are now addressing this problem. High bandwidth videoconferencing is now being routinely used to provide psychiatric consultations to areas without this service. But this (like many other implementations of telecommunication technologies to health) has resulted in loss of revenue to regional Australia while benefiting capital cities. Thus, the current implementation of telecommunication technology to health has resulted in loss of revenue of the regions while increasing the bias towards the cities. Further, the system is not economically viable and requires the Government to inject funds for the smooth operation of the system. This paper proposes the use of telecommunication technology for enabling the communities of regional Australia to access health facilities via physical and virtual clinics. The proposed technique is self supporting and is based in the country with the intent to prevent the drain of resources from regional Australia. The technique attempts to eradicate the problem at the root level by providing a business opportunity that is based in and to cater for the needs of the remote communities. The proposed system would provide health services by physical and virtual clinics and while serving the communities would be profit centres- and thus attracting doctors and other resources to the remote communities.

  20. Lantern Festival —— Canberra, Australia

    Institute of Scientific and Technical Information of China (English)

    Carol Keil

    2009-01-01

    <正>Each year, for the last 21 years, the ACT Branch of the Australia China Friendship Society has celebrated the Lantern Festival on the shores of Lake Burley Griffin. In preparation for the Festival we hold a lantern-making workshop for the general public

  1. Physiotherapy in Critical Care in Australia

    OpenAIRE

    Berney, Susan; Haines, Kimberley; Denehy, Linda

    2012-01-01

    A physiotherapist is part of the multidisciplinary team in most intensive care units in Australia. Physiotherapists are primary contact practitioners and use a comprehensive multisystem assessment that includes the respiratory, cardiovascular, neurological, and musculoskeletal systems to formulate individualized treatment plans. The traditional focus of treatment has been the respiratory management of both intubated and spontaneously breathing patients. However, the emerging evidence of the l...

  2. Radiation doses from computed tomography in Australia

    International Nuclear Information System (INIS)

    Recent surveys in various countries have shown that computed tomography (CT) is a significant and growing contributor to the radiation dose from diagnostic radiology. Australia, with 332 CT scanners (18 per million people), is well endowed with CT equipment compared to European countries (6 to 13 per million people). Only Japan, with 8500 units (78 per million people), has a significantly higher proportion of CT scanners. In view of this, a survey of CT facilities, frequency of examinations, techniques and patient doses has been performed in Australia. It is estimated that there are 1 million CT examinations in Australia each year, resulting in a collective effective dose of 7000 Sv and a per caput dose of 0.39 mSv. This per caput dose is much larger than found in earlier studies in the UK and New Zealand but is less than 0.48 mSv in Japan. Using the ICRP risk factors, radiation doses from CT could be inducing about 280 fatal cancers per year in Australia. CT is therefore a significant, if not the major, single contributor to radiation doses and possible risk from diagnostic radiology. (authors)

  3. Analysis on the Emotions in Australia

    Institute of Scientific and Technical Information of China (English)

    WANG Cheng-zhen

    2015-01-01

    Analyzing familial affection between Sarah and Nullah across race, love between Sarah and Drover across caste, friend⁃ship between Sarah and King George across caste and race, this paper attempts to help audience comprehend the theme of the movie Austrlia and construct a new equal harmonious diversified Australia.

  4. Social Inclusion and Critical Consciousness in Australia

    Science.gov (United States)

    Diemer, Matthew A.; Ortega, Lilyana

    2010-01-01

    Australia's Indigenous population is excluded from a range of opportunities, experiences and amenities that facilitate wellbeing, self-determination and social inclusion. This social exclusion constrains the career development and occupational attainment of Indigenous youth, which represent key routes to societal inclusion. Critical…

  5. The Teaching of Japanese in Australia.

    Science.gov (United States)

    Marriott, Helen E.

    1992-01-01

    The article surveys the development of Japanese language courses in Australia, noting a variety of factors contribute to the growth and recent intensification of interest in the subject. It examines problems within Japanese language teaching and discusses further innovative course development, differentiation of needs, employer perceptions, and…

  6. Uranium mining in Canada and Australia

    International Nuclear Information System (INIS)

    This study compared the impact of taxation on the economic viability and competitive position of uranium mining in Canada and Australia. The evaluation is based on four types of uranium deposit and four hypothetical project models. The deposits are assumed to have been discovered and delineated, and are awaiting a mine development decision. The models, initially appraised on a before-tax basis, are then subjected to taxation in each of six jurisdictions. Several taxation criteria are assessed in each case, including after-tax measures of investment incentive, discounted tax revenues, effective tax rates, intergovernmental tax shares, and comparative tax levels. The impact of taxation is shown to be both high and variable. The taxation systems in Saskatchewan and Australia's Northern Territory generate the most government revenue and provide the lowest incentive for investment. Canada's Northwest Territories and Ontario provide the best investment incentive and collect the least amount of taxes. South Australia and Western Australia tend to be positioned between these extremes. The study demonstrates that only the very best uranium mining projects have a chance of being developed under current market conditions, and even these can be rendered uneconomic by excessive taxation regimes. It follows that exceptionally good quality targets will have to be identified to provide the economic justification for uranium exploration. These realities will likely restrict uranium exploration and development activities for some time, not an unexpected response to a market situation where low prices have been caused largely by excess supply. (L.L.)

  7. Perception of Innovative Crop Insurance in Australia

    NARCIS (Netherlands)

    Meuwissen, M.P.M.; Molnar, T.A.

    2010-01-01

    Worldwide, extreme climate risks cause stakeholders in food supply chains to search for new risk management tools. In Australia, recently so-called crop yield simulation insurance has been introduced based on an integrated agrometeorological simulation model. Current uptake is relatively low, possib

  8. Medical e-commerce for regional Australia.

    Science.gov (United States)

    Kumar, D K; Mikelaitis, P

    2001-12-01

    The residents of rural and regional Australia have less access to health care services than in capital cities. There is a reluctance of General Practitioners to practice in the country. New information technology and government initiatives are now addressing this problem. High bandwidth videoconferencing is now being routinely used to provide psychiatric consultations to areas without this service. But this (like many other implementations of telecommunication technologies to health) has resulted in loss of revenue to regional Australia while benefiting capital cities. Thus, the current implementation of telecommunication technology to health has resulted in loss of revenue of the regions while increasing the bias towards the cities. Further, the system is not economically viable and requires the Government to inject funds for the smooth operation of the system. This paper proposes the use of telecommunication technology for enabling the communities of regional Australia to access health facilities via physical and virtual clinics. The proposed technique is self supporting and is based in the country with the intent to prevent the drain of resources from regional Australia. The technique attempts to eradicate the problem at the root level by providing a business opportunity that is based in and to cater for the needs of the remote communities. The proposed system would provide health services by physical and virtual clinics and while serving the communities would be profit centres- and thus attracting doctors and other resources to the remote communities. PMID:11929136

  9. Public Engagement and Nanotechnology in Australia.

    Science.gov (United States)

    Dalton-Brown, Sally

    2016-07-01

    Upstream engagement is commonly regarded as necessary for the smooth implementation of new technologies, particularly when there is an impact on health. Is the healthcare context in Australia geared toward such public engagement? There are established engagement practices for issues of healthcare resourcing, for example; however, the situation becomes more complex with the introduction of a new technology such as nanomedicine. PMID:27348837

  10. Tertiary Education in Australia: Part I

    Science.gov (United States)

    Sands, Edward Wilfrid; Berends, Willem

    2012-01-01

    This paper examines the foundation and development of universities in Australia and New Zealand and demonstrates how these universities were established on a secular basis. Educators from other continents with a mainly Christian history are often surprised that there is so little evidence of Christian input into the university sector in…

  11. International Higher Education in Australia: Unplanned Future

    Science.gov (United States)

    Shah, Mahsood; Nair, Chenicheri Sid

    2011-01-01

    International education is the third largest export industry in Australia and is worth almost A$20 billion. The last ten years have witnessed significant growth in both onshore and offshore enrolments of international students in Australian universities. The offshore component of all Australian universities has been subject to scrutiny by the…

  12. Training for rural practice in Australia 1990.

    Science.gov (United States)

    Hickner, J M

    1991-01-21

    There is a shortage of general practitioners in rural Australia. Several recent State and federal government reports have highlighted the difficulties of rural practice. One of the reasons commonly cited for the shortage of country doctors is the lack of appropriate training in Australia's medical schools and the Family Medicine Programme. This survey of the heads of departments of community medicine/general practice of Australia's 10 medical schools and of the State directors of the Family Medicine Programme documents the present efforts to train doctors for rural general practice. A 100% response was achieved. The responses indicate much interest and effort from the Family Medicine Programme in developing rural training schemes. Though the community medicine/general practice departments demonstrate considerable interest and innovation, they are hampered by lack of resources and negative attitudes of some specialist colleagues. Overall, the main impediments are: lack of "affirmative action" admissions policies to recruit rural students; insufficient curricular time for teaching the principles of general practice; students' lack of confidence in the procedural aspects of rural practice; lack of appropriate training posts in anaesthetics; lack of appropriate general practice training posts at regional hospitals; and lack of financial resources. Some suggestions are given to improve training for rural practice in Australia. PMID:1986187

  13. Deutsch in Australien (German in Australia)

    Science.gov (United States)

    Apelt, Hans-Peter

    1975-01-01

    German studies have expanded in the last 25 years in Australia. In 1974 the Goethe Institute conducted developmental conferences for German teachers, in cooperation with Australian universities and school authorities. Twelve universities have fully developed Germanistic Institutes. The Australian government has subsidized increasing numbers of…

  14. Legislation analysis on reducing GHG in Australia

    Institute of Scientific and Technical Information of China (English)

    Yiqi Mao; Li Chen

    2014-01-01

    ‘Greenhouse Effect’ derived from human activities has caused many concerns. This dissertation mainly analysis existing GHG reduction regulations in Australia, the relationship between those regulations, and the effectiveness of the regulatory framework to see whether the CPR Scheme and other complementary strategies can effectively improve the regulatory outcomes, namely reduces GHG emissions.

  15. Tertiary Education and Training in Australia, 2009

    Science.gov (United States)

    National Centre for Vocational Education Research (NCVER), 2011

    2011-01-01

    Sourcing data from the National VET Provider Collection and the Higher Education Statistics Collection, this publication provides a summary of participation in tertiary education and training in Australia. It covers participation in Australian Qualifications Framework certificate I qualifications through to doctorates by research, as well as…

  16. The United Kingdom and Australia: new titles.

    Science.gov (United States)

    Greaves, David

    1988-01-01

    In 1987, a number of significant publications reflected the upsurge of interest in medical ethics in Britain and Australia. Topics considered in these reports and journals include the teaching of medical ethics in medical schools, infertility treatment, surrogacy contracts, euthanasia, human embryo research, and moral issues related to AIDS. PMID:11650804

  17. Australia modifies resource rent, uranium mining policies

    Energy Technology Data Exchange (ETDEWEB)

    1984-04-01

    Current Australian government business and economic policies as they affect the mining industry are discussed. The distribution of constitutional and taxing powers in Australia between state and commonwealth governments and possible inappropriate taxes and other policies can have an adverse effect on resource development. The effects of these policies on both coal and uranium mining are discussed.

  18. Academic Salaries in Australia, 1967 to 1990.

    Science.gov (United States)

    Marginson, Simon

    1989-01-01

    Trends in college faculty salaries in Australia since 1967 are examined, in real terms, for several academic ranks and in comparison with salaries of scientists, senior public service administrators and managers, and public service engineers. Faculty salary losses since a 1973 high are substantial, both over time and in comparison with other…

  19. Our impressions of Australia and New Zealand

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正> Everyone has his or her own impressions of a place after a visit. Different people have different views because of different cultures. The following story contains some Chinese people’s impressions of Australia and New Zealand after their return.

  20. School Security Assessment Programme in Australia

    Science.gov (United States)

    Marrapodi, John

    2007-01-01

    This article describes a successful security risk management programme in Australia. The state-wide programme follows a structured risk management approach focusing on the safety and security of people, information, provision, and assets in the school environment. To assist school principals, a Security Risk Assessment Programme was developed on a…

  1. The Adult Educator in Multicultural Australia.

    Science.gov (United States)

    Grassby, A. J.

    1978-01-01

    The Australian Commissioner for Community Relations describes and criticizes the Australian traditional ethnocentrism and xenophobia, pointing out that Australia is and always has been a multicultural society. He emphasizes the need for wide changes in education and notes the potential of lifelong and adult community education. (MF)

  2. Radiation doses from computed tomography in Australia

    Energy Technology Data Exchange (ETDEWEB)

    Thomson, J.E.M.; Tingey, D.R.C

    1997-11-01

    Recent surveys in various countries have shown that computed tomography (CT) is a significant and growing contributor to the radiation dose from diagnostic radiology. Australia, with 332 CT scanners (18 per million people), is well endowed with CT equipment compared to European countries (6 to 13 per million people). Only Japan, with 8500 units (78 per million people), has a significantly higher proportion of CT scanners. In view of this, a survey of CT facilities, frequency of examinations, techniques and patient doses has been performed in Australia. It is estimated that there are 1 million CT examinations in Australia each year, resulting in a collective effective dose of 7000 Sv and a per caput dose of 0.39 mSv. This per caput dose is much larger than found in earlier studies in the UK and New Zealand but is less than 0.48 mSv in Japan. Using the ICRP risk factors, radiation doses from CT could be inducing about 280 fatal cancers per year in Australia. CT is therefore a significant, if not the major, single contributor to radiation doses and possible risk from diagnostic radiology. (authors) 28 refs., 11 tabs., 10 figs.

  3. Food Literacy at Secondary Schools in Australia

    Science.gov (United States)

    Ronto, Rimante; Ball, Lauren; Pendergast, Donna; Harris, Neil D.

    2016-01-01

    Background: Food literacy can encourage adolescents to develop healthy dietary patterns. This study examined home economics teachers' (HET) perspectives of the importance, curriculum, self-efficacy, and food environments regarding food literacy in secondary schools in Australia. Methods: A 20-item cross-sectional survey was completed by 205 HETs.…

  4. Gender Inclusive Policy Developments in Australia.

    Science.gov (United States)

    Johnson, Evelyn

    2002-01-01

    Traces two chronologies of gender-inclusive policy development in Australia's national and state education-policy arenas to demonstrate, from a feminist perspective, their limited applicability at the school level. Argues that more transformative conceptions of gender inclusiveness evident in the feminist academy be promoted in policy. (Contains…

  5. Changing Patterns of Teacher Education in Australia

    Science.gov (United States)

    Aspland, Tania

    2006-01-01

    This paper is designed to portray the historical development of teacher education in Australia. The paper is presented in three parts, each of which represents a "turn" in the evolution of teacher education. The first details the historical development of teacher education prior to the establishment of the first teachers college in…

  6. Natural Seismicity in NW Australia: Another Look at Continental Intraplate Earthquakes

    Science.gov (United States)

    Revets, S. A.; Keep, M.; Kennett, B. L.

    2007-12-01

    Northwestern Australia hosts a considerable number of smaller seismic events, but also Australia's largest earthquake on record (Meeberrie, 1941, M7.9). In 2005 we deployed a small network of seismometers to record natural seismicity in the region, to understand the amount, magnitude, nature and distribution of these events, and to interpret these events within a tectonic and neotectonic context. The region is largely underlain by Precambrian material, ranging from Archaean craton to Proterozoic mobile belts, and truncated to the west by the lithospheric-scale Darling Fault. This fault separates the Precambrian crustal elements from the younger Palaeozoic-Mesozoic Carnarvon Basin to the east, has a strike length of over 1400 km. It is thought to have been active since at least the Proterozoic. Estimates of slip on some southerly sections of this fault exceed 12 km. We believe that these various crustal elements (basins, cratons, mobile belts) respond differently to seismicity based on their rheology, thickness and deformation history. We supplemented data from our network with traces from some of the instruments of the national network of Australia. This data set proved adequate for the calculation of fault-plane solutions of some 13 mini- and micro- events in the region. The eventsrecorded occurred along or close to known faults, although field data for movement or reactivation on these faults is sparse. Most of our calculated events occur in close proximity to mechanical boundaries between crustal elements, indicating that the mechanical response of these elements controls the location of seismicity. The transitional tectonic setting of this part of the Australian margin---a passive margin sandwiched between two active margin segments---indicates that the term "intraplate" may be an inappropriate description of these seismic events.

  7. Characterizing phenological vegetation dynamics amidst extreme climate variability in Australia with MODIS VI data

    Science.gov (United States)

    Broich, M.; Huete, A. R.; Xuanlon, M.; Davies, K.; Restrepo-Coupe, N.; Ratana, P.

    2012-12-01

    sequences allowing identification of growth periods with different magnitudes and durations anywhere in the time series. Results show that the highest absolute variability in peak greenness occurred in cropped areas while the highest relative variability (coefficient of variation) occurred in interior Australia particularly around Lake Eyre, the center of a closed drainage basin in the dry interior of the continent. Across the desert interior, the timing of the green-up onset and the peak greenness was correlated with the landfall of cyclones and the inland penetration and strength of the north Australian summer monsoon (represented by TRMM data). The variability of Australian land surface phenology magnitude and timing was found to be strongly correlated with the swings between La Nina and El Nino events. The information on vegetation dynamics represented here is critical for land surface, fuel accumulation, agricultural production, and permanent ecosystem change modeling in relation to climate trends. A unique research opportunity is provided by recent climate variability: in 2010 a persistent El Nino has given way to a strong two-year La Nina breaking a decade long drought that was followed by record-breaking rainfall across most of the continent and extensive flooding followed by sustained greening.

  8. Analysis of Evaporative Flux Over Irrigated and Unirrigated Pasture in the Wood River Basin

    Science.gov (United States)

    Cuenca, R. H.; Mahrt, L.; Hagimoto, Y.; Peterson, S.

    2005-12-01

    The reduction in evaporative fluxes due to withholding irrigation water for pasture in the Wood River subbasin of the Upper Klamath Basin was evaluated to estimate the potential benefit in subsequent streamflow. Two Campbell Scientific (CSI) Bowen ratio - energy balance systems were installed, one over a fully irrigated site and one over a non-irrigated site separated by approximately 11 km. The systems were comprised of an infrared gas analyzer for water vapor gradients, fine-wire thermocouples for temperature gradients, net radiometer and soil heat flux sensors. Additional micrometeorological sensors for precipitation, solar radiation, air temperature and relative humidity, wind speed and direction enabled calculation of a Penman-Monteith reference evapotranspiration. Both sites had uniform fetch conditions in excess of 1 km in the predominant upwind direction. Bowen ratio data were quality controlled using the Ohmura algorithm and energy balance components and fluxes computed every 20-min. Soil temperature and soil moisture profile sensors in six depth layers down to 80 cm were installed at the same sites and monitored every 15-min. High frequency (10-min) recording piezometers for water table monitoring were also installed. Both irrigated and unirrigated sites started the 2004 growing season with virtually the same soil moisture conditions due to over winter precipitation and melting of the snowpack. The evaporative flux rates from the two sites were nearly identical early in the season, and the repeatability of the diurnal fluxes at the two sites during this period is excellent. Towards the middle of the growing season, the evaporative flux rate at the irrigated site increased relative to the unirrigated site until at the end of the season there was approximately a 40 percent unbiased (dividing by the mean) difference between the two sites. The micrometeorological data indicate nearly uniform atmospheric conditions at the two sites due to turbulent mixing of

  9. Clinical Effect of 5-aminolevulinic Acid Photodynamic Treating 10 Cases Bowen' s Disease%5-氨基酮戊酸光动力疗法治疗鲍温病10例疗效观察

    Institute of Scientific and Technical Information of China (English)

    熊林; 陆延娜; 万静; 魏亚东; 赵延东

    2012-01-01

    目的 观察5-氨基酮戊酸光动力疗法治疗鲍温病的临床疗效.方法 将20例鲍温病患者分为两组,各10例.治疗组予5-氨基酮戊酸外涂于皮损处,3h后予红光照射20min,能量密度100~120 J/cm2,1次/周,共4周.对照组外涂5-氟尿嘧啶软膏皮损处,2次/d,共4周.结果 治疗组完全缓解率为90.00%,对照组为30.00%,两组间完全缓解率比较,差异有统计学意义(P<0.05).且治疗组均未见严重不良反应,对照组有溃疡及瘢痕等不良反应.结论 5-氨基酮戊酸光动力疗法治疗鲍温病临床疗效较好,且无严重不良反应,值得临床推广应用.%Objective To observe the clinical effect of 5-aminolevulinic acid photodynamic therapy ( ALA-PDT) treating Bowen' s disease. Methods Twonty cases of Bowen' s disease were randomly divided into treatment group and control. Each group has 10 cases. Treatment group: applied 5-aminolevulinic acid (ALA) to the skin lesions, 3 hours later red light irradiated 20min, energy density was 100 ~ 120 J/cm2, one time a week for 4 weeks. Control group: smearing 5-fluorouracil cream(5-Fu ointment) on skin lesions,, twice daily for 4 weeks. Results Completely remission rate was 90. 00% in treatment group and 30. 00% in control. The difference between them had statistical significance(P <0.05). There were no serious side effects in the treatment group, but the control group appeared ulcer, scar and other side effects. Conclusion 5-aminolevulinic acid photodynamic is a good therapeutic method for Bowen' s disease.

  10. Estimation of annual Groundwater Evapotranspiration from Phreatophyte Vegetation in the Great Basin using Remotely Sensed Vegetation Indices and Ground Based Flux Tower measurements

    Science.gov (United States)

    Beamer, Jordan P.

    Escalating concerns about the future of water resource management in arid regions of the American Southwest have sparked numerous hydrologic studies looking into available water resources for in-basin and inter-basin transfers. Groundwater is the primary water supply source for much of the state of Nevada and the Great Basin, thus accurate estimates of the regional scale groundwater recharge and discharge components are critical for regional groundwater budgets. Groundwater discharge from phreatophyte vegetation by evapotranspiration (ET) is the dominant component of groundwater discharge in many hydrologically closed valleys of the Great Basin, and can be measured directly from eddy-covariance (EC) and Bowen-ratio (BR) flux tower systems. The purpose of this project was to develop a predictive equation based on relationship between annual ET and meteorological data from EC and BR sites in phreatophyte vegetation with remote sensing data. Annual total ET (ET a) measured from forty site/year combinations of flux tower data from Carson Valley, Walker River Basin, Oasis Valley, Snake Valley, Spring Valley, White River Valley, and the lower Colorado River Flow system were correlated with the Enhanced Vegetation Index (EVI) from Landsat Thematic Mapper (TM) satellite. EVI was extracted from source areas at corresponding locations from 15 mid-summer Landsat TM scenes. ETa was transformed into ET* by subtracting annual precipitation and normalizing by annual reference ET (ETo) (ET*=(ETa-precipitation)/(ETo-precipitation)). ET* correlated well with EVI (r2=0.97), and because it takes basin specific climate measurements into account, it is transferable to many shallow groundwater discharge areas in the Great Basin. This relationship was used to provide a first order estimate of the mean annual groundwater ET (ETg) from four phreatophyte groundwater discharge areas in Nevada using only a mid-summer Landsat EVI image, annual ETo and precipitation data. This simple approach

  11. Basin Hopping Graph

    DEFF Research Database (Denmark)

    Kucharik, Marcel; Hofacker, Ivo; Stadler, Peter;

    2014-01-01

    of the folding free energy landscape, however, can provide the relevant information. Results We introduce the basin hopping graph (BHG) as a novel coarse-grained model of folding landscapes. Each vertex of the BHG is a local minimum, which represents the corresponding basin in the landscape. Its edges connect...

  12. K Basin safety analysis

    International Nuclear Information System (INIS)

    The purpose of this accident safety analysis is to document in detail, analyses whose results were reported in summary form in the K Basins Safety Analysis Report WHC-SD-SNF-SAR-001. The safety analysis addressed the potential for release of radioactive and non-radioactive hazardous material located in the K Basins and their supporting facilities. The safety analysis covers the hazards associated with normal K Basin fuel storage and handling operations, fuel encapsulation, sludge encapsulation, and canister clean-up and disposal. After a review of the Criticality Safety Evaluation of the K Basin activities, the following postulated events were evaluated: Crane failure and casks dropped into loadout pit; Design basis earthquake; Hypothetical loss of basin water accident analysis; Combustion of uranium fuel following dryout; Crane failure and cask dropped onto floor of transfer area; Spent ion exchange shipment for burial; Hydrogen deflagration in ion exchange modules and filters; Release of Chlorine; Power availability and reliability; and Ashfall

  13. K Basin safety analysis

    Energy Technology Data Exchange (ETDEWEB)

    Porten, D.R.; Crowe, R.D.

    1994-12-16

    The purpose of this accident safety analysis is to document in detail, analyses whose results were reported in summary form in the K Basins Safety Analysis Report WHC-SD-SNF-SAR-001. The safety analysis addressed the potential for release of radioactive and non-radioactive hazardous material located in the K Basins and their supporting facilities. The safety analysis covers the hazards associated with normal K Basin fuel storage and handling operations, fuel encapsulation, sludge encapsulation, and canister clean-up and disposal. After a review of the Criticality Safety Evaluation of the K Basin activities, the following postulated events were evaluated: Crane failure and casks dropped into loadout pit; Design basis earthquake; Hypothetical loss of basin water accident analysis; Combustion of uranium fuel following dryout; Crane failure and cask dropped onto floor of transfer area; Spent ion exchange shipment for burial; Hydrogen deflagration in ion exchange modules and filters; Release of Chlorine; Power availability and reliability; and Ashfall.

  14. 5-aninplavulinic acid-photodynamic therapy in the treatment of solar keratosis and Bowen's disease%5-氨基酮戊酸光动力疗法治疗日光性角化病和鲍温病临床观察

    Institute of Scientific and Technical Information of China (English)

    罗东; 邹晓辉; 梁俊琴; 普雄明

    2012-01-01

    Objective To investigate the effects of 5-aninplavulinic acid-photodynamic therapy in the treatment of solar keratosis and Bowen's disease. Methods (ALA-PDT) Twelve patients with solar keratosis. ten patients with Bowen's disease were given 5-aninplavulinic acid followed by PDT. Results The clearance was Achieved in twelve patients with solar keratosis,seven patients with Bowen's disease by 5-aninplavulinic acid-photodynamic.The recurrence rates were 8.3%and 11% for solar keratosis and Bowen's disease respectively. Conclusions ALA-PDT is a simple,effective and good treatment with lower recurrent rates.no scar formation and excellent cosmetic results for solar keratosis and Bowen's disease,especially for the large and multifocal lesions located on the face external genitalia.%目的:探讨5-氨基酮戊酸光动力疗法(ALA-PDT)治疗日光性角化病和鲍温病的疗效.方法:对12例日光性角化病、10例鲍温病患者进行ALA-PDT.结果:12例日光性角化病患者的皮损均获得完全缓解,1例复发,复发率为8.3%; 10例鲍温病患者除1例获得部分缓解外,其它9例完全缓解,1例复发,复发率为11%.结论:ALA-PDT是一种疗效好、无明显痛苦、复发率低、美容效果好的治疗日光性角化病和鲍温病的方法,特别适合于头面部和外生殖器部位的多发性较大面积的皮损.

  15. Land surface phenological response to decadal climate variability across Australia using satellite remote sensing

    Directory of Open Access Journals (Sweden)

    M. Broich

    2014-05-01

    Full Text Available Land surface phenological cycles of vegetation greening and browning are influenced by variability in climatic forcing. Quantitative information on phenological cycles and their variability is important for agricultural applications, wildfire fuel accumulation, land management, land surface modeling, and climate change studies. Most phenology studies have focused on temperature-driven Northern Hemisphere systems, where phenology shows annually reoccurring patterns. Yet, precipitation-driven non-annual phenology of arid and semi-arid systems (i.e. drylands received much less attention, despite the fact that they cover more than 30% of the global land surface. Here we focused on Australia, the driest inhabited continent with one of the most variable rainfall climates in the world and vast areas of dryland systems. Detailed and internally consistent studies investigating phenological cycles and their response to climate variability across the entire continent designed specifically for Australian dryland conditions are missing. To fill this knowledge gap and to advance phenological research, we used existing methods more effectively to study geographic and climate-driven variability in phenology over Australia. We linked derived phenological metrics with rainfall and the Southern Oscillation Index (SOI. We based our analysis on Enhanced Vegetation Index (EVI data from the MODerate Resolution Imaging Spectroradiometer (MODIS from 2000 to 2013, which included extreme drought and wet years. We conducted a continent-wide investigation of the link between phenology and climate variability and a more detailed investigation over the Murray–Darling Basin (MDB, the primary agricultural area and largest river catchment of Australia. Results showed high inter- and intra-annual variability in phenological cycles. Phenological cycle peaks occurred not only during the austral summer but at any time of the year, and their timing varied by more than a month in

  16. Variation in forearc basin development along the Sunda Arc, Indonesia

    Science.gov (United States)

    van der Werff, W.

    The present forearc basin configuration along the Sunda Arc initially appears to have been controlled by extension and differential subsidence of basement blocks in response to the late Eocene collision of India with Asia. The late Oligocene increase in convergence between the South-east Asian and Indian Plates associated with a new pulse of subduction, resulted in basement uplift and the formation of a regional unconformity that can be recognized along the entire Sunda Arc. From the early to late Miocene, the Sumba and Savu forearc sectors along the eastern Sunda Arc may have been characterized by forearc extension. Submarine fan deposition on the arcward side of the evolving accretionary prism represents the first phase in forearc basin deposition. These fans were subsequently covered by basin and slope sediments derived from the evolving magmatic arc. Structural response to increased late Miocene compression varied along strike of the Sunda Arc. North of Bali, Lombok and Sumbawa, the incipient collision between Australia and the western Banda Arc caused back-arc thrusting and basin inversion. Towards the south of Java, an increase in both the size of the accretionary prism and convergence rates resulted in uplift and large scale folding of the outer forearc basin strata. Along the west coast of Sumatra, increased compression resulted in uplift along the inner side of the forearc along older transcurrent faults. Uplift of West Sumatra was followed by the deposition of a westward prograding sequence of terrigenous sediments that resulted in the development of a broad shelf. Initial forearc basin subsidence relates to the age of the subducting oceanic lithosphere, on top of which the basin is situated. Along the western Sunda Arc, both fexural loading of the evolving accretionary prism, and across arc strike-slip faulting represent additional factors that result in forearc subsidence.

  17. Recent developments in Australia's uranium mining industry

    International Nuclear Information System (INIS)

    Uranium is produced at two mining/milling operations in Australia - Ranger in the Alligator Rivers Region of the Northern Territory, and Olympic Dam in South Australia. In 1996, Ranger produced 4138 tonnes (t) U3O8 from stockpiled ore mined from Ranger No. 1 Orebody. The capacity of the Ranger mill is being expanded to 5000 tonnes per annum (tpa) U3O8 to coincide with the commencement of mining from No. 3 Orebody in mid-1997. The Olympic Dam copper-uranium-gold-silver deposit is the world's largest deposit of low cost uranium. The operation currently has an annual production of 85,000 t copper, 1700 t U3O8 and associated gold and silver. WMC Ltd proposes to expand annual production to 200 000 t copper and approximately 4600 t U3O8 by end of 1999. The environmental impact of the expansion is being assessed jointly by both Commonwealth and South Australian Governments. A draft Environmental Impact Statement (EIS) was released in May. Since its election in March 1996, the Liberal/National Party Coalition Government has made a number of changes to the Commonwealth Government's policies relating to uranium mining, including removal of the former Government's 'three mines' policy, and relaxation of the guidelines for foreign investment in Australian uranium mines. These changes, together with an improved outlook for the uranium market, have resulted in proposals to develop new mines at Jabiluka (Northern Territory), Kintyre (Western Australia) and Beverley (South Australia). Energy Resources of Australia Ltd proposes to develop an underground mine at Jabiluka with the ore to be processed at Ranger mill. Initial production will be 1800 tpa U3O8 which will increase to 4000 tpa U3O8 by the 14th year. The draft EIS was released for public comment in October 1996, and the final EIS is to be released in June 1997. Canning Resources Ltd proposes to mine the Kintyre deposit by open cut methods commencing in 1999 with an annual production of 1200 tpa U3O8. Heathgate Pty. Ltd

  18. 巢式PCR方法检测非生殖器部位Bowen病HPV DNA%Detection of human papillomavirus DNA in extragenital Bowen's disease by using a nested PCR

    Institute of Scientific and Technical Information of China (English)

    哈达; 孔迎辉; 魏烨平; 郑淑云

    2012-01-01

    Objective To develop a new nested PCR to detect human papillomavirus (HPV) DNA in lesions of extragenital Bowen's disease.Methods DNA was extracted from the lesions of 41 patients with extragenital Bowen's disease and suhjected to the amplification of HPV by a nested PCR.Five primers,including CN1FR,CN2FR,CN3FR,CN4FR and CN5FR,were designed and used in the second round PCR.Results Based on the ClustalX analysis,69 HPV subtypes,including mucosal types,cutaneous types and epidermodysplasia verruciformis-associated types,could be amplified by using the 5 designed primers.The detection limit varied from 10-3 to 10-2 copies of HPV DNA for this PCR.Of the 41 lesional specimens,5 were positive for HPV DNA,including 3 cases of high-risk HPV types (2 cases of HPV 16,1 case of HPV 33) and 2 cases of cutaneous HPV types (1 case of HPV 27 and 1 case of HPV 76).Conclusions The improved nested PCR is highly sensitive and specific for the detection of HPV DNA in lesions of extragenital Bowen's disease.The development of extragenital Bowen's disease may be associated with the infection with high-risk mucosal HPV types in some patients.%目的 建立一种巢式PCR方法,探讨HPV DNA在非生殖器部位Bowen病中的检出率.方法 巢式PCR方法,用5对不同引物包括CN1FR、CN2FR、CN3FR、CN4FR以及CN5FR进行扩增.结果 通过ClustalX软件,将所设计的每对引物与已知HPV亚型的碱基序列逐一相比较,得知改良设计的引物可以使69种HPV亚型得到扩增,包括黏膜型HPV、皮肤型HPV以及疣状表皮发育不良相关性HPV;PCR反应体系的敏感度在10-2~10-3拷贝之间.41例非生殖器部位Bowen病的组织标本中,5例HPV DNA阳性,其中高危黏膜型3例(2例HPV16,1例HPV33),皮肤型2例(HPV27和HPV76各1例).结论 改良的巢式PCR方法具有较高的敏感性、特异性,部分非生殖器部位Bowen病发病与黏膜高危型HPV感染相关.

  19. The Expression of △Np63 in Bowen Disease and Cutaneous Squamous Cell Carcinoma%鲍温病和皮肤鳞状细胞癌皮损中△Np63的表达

    Institute of Scientific and Technical Information of China (English)

    杜红霞; 邹勇莉; 吴潞明; 刘彤云; 郑博文; 何黎; 李谦; 顾华; 孙东杰; 涂颖

    2011-01-01

    目的 观察△Np63在鲍温病和皮肤鳞状细胞癌中的表达情况.方法 应用免疫组化Envision法检测10例正常皮肤、30例鲍温病及30例皮肤鳞状细胞癌组织中△Np63的表达水平,并对该3组标本△Np63的表达水平进行比较.结果 在鲍温病的皮损组织中,△Np63主要在表皮全层细胞中弥漫性表达;在皮肤鳞状细胞癌中,△Np63表达与其分化程度相关(p =0.004),即在高分化鳞状细胞癌中,△Np63在癌巢外周基底样细胞表达,在中分化鳞状细胞癌中,△Np63在癌巢中有弱弥漫性表达.△Np63在鲍温病、皮肤鳞状细胞癌及正常皮肤中的阳性表达率差异有统计学意义(P<0.05);但不同部位的鲍温病和皮肤SCC组组织中,△Np63表达差异均无统计学意义(P均>0.05).结论 △Np63多考虑是未分化及低分化上皮来源肿瘤的标记物.%Objective To observe the expressions of △Np63 in Bowen disease and cutaneous squamous cell carcinoma. Methods With immunohistochemical method, ANp63 in normal skin(n = 10) , Bowen disease (n =30) and cutaneous squamous cell carcinoma ( n = 30) tissues were detected and compared. Results The Bowen diseases showed remarkable expression of △Np63 in all cell layers of epidermis. Different expression pattern was associated with degree of SCC differentiation ( P < 0.05). In high differentiated SCC, ANp63 was confined to a ring of basal-like cells surrounding. In moderately differentiated SCC, most cells contained ANp63 and their distribution was diffuse in center of cancer nests. The expression of ANp63 in Bowen disease, cutaneous squamous cell carcinoma and normal skin showed statistically significance difference (all P<0.05). Conclusion ANp63 expression may be a valuable immunohistochemical marker for undifferentiated and poorly differentiated tumours of epithelial cell origin.

  20. Wada basin boundaries and basin cells

    NARCIS (Netherlands)

    Nusse, H.E.; Yorke, J.A.

    1996-01-01

    In dynamical systems examples are common in which two or more attractors coexist, and in such cases the basin boundary is nonempty. We consider a two-dimensional diffeomorphism F (that is, F is an invertible map and both F and its inverse are differentiable with continuous derivatives), which has at

  1. A comparison of integrated river basin management strategies: A global perspective

    Science.gov (United States)

    Zhao, Chunhong; Wang, Pei; Zhang, Guanghong

    In order to achieve the integrated river basin management in the arid and rapid developing region, the Heihe River Basin (HRB) in Northwestern China, one of critical river basins were selected as a representative example, while the Murray-Darling Basin (MDB) in Australia and the Colorado River Basin (CRB) in the USA were selected for comparative analysis in this paper. Firstly, the comparable characters and hydrological contexts of these three watersheds were introduced in this paper. Then, based on comparative studies on the river basin challenges in terms of the drought, intensive irrigation, and rapid industrialization, the hydrological background of the MDB, the CRB and the HRB was presented. Subsequently, the river management strategies were compared in three aspects: water allocation, water organizations, and water act and scientific projects. Finally, we proposed recommendations for integrated river basin management for the HRB: (1) Water allocation strategies should be based on laws and markets on the whole basin; (2) Public participation should be stressed by the channels between governance organizations and local communities; (3) Scientific research should be integrated into river management to understand the interactions between the human and nature.

  2. Reserves in western basins

    Energy Technology Data Exchange (ETDEWEB)

    Caldwell, R.H.; Cotton, B.W. [Scotia Group, Dallas, TX (United States)

    1995-04-01

    The objective of this project is to investigate the reserves potential of tight gas reservoirs in three Rocky Mountain basins: the Greater Green River (GGRB), Uinta and Piceance basins. The basins contain vast gas resources that have been estimated in the thousands of Tcf hosted in low permeability clastic reservoirs. This study documents the productive characteristics of these tight reservoirs, requantifies gas in place resources, and characterizes the reserves potential of each basin. The purpose of this work is to promote understanding of the resource and to encourage its exploitation by private industry. At this point in time, the GGRB work has been completed and a final report published. Work is well underway in the Uinta and Piceance basins which are being handled concurrently, with reports on these basins being scheduled for the middle of this year. Since the GGRB portion of the project has been completed, this presentation win focus upon that basin. A key conclusion of this study was the subdivision of the resource, based upon economic and technological considerations, into groupings that have distinct properties with regard to potential for future producibility, economics and risk profile.

  3. Stylobates birtlesi sp. n., a new species of carcinoecium-forming sea anemone (Cnidaria, Actiniaria, Actiniidae from eastern Australia

    Directory of Open Access Journals (Sweden)

    Andrea Crowther

    2011-04-01

    Full Text Available We describe a new species of carcinoecium-forming sea anemone, Stylobates birtlesi sp. n., from sites 680-960 m deep in the Coral Sea, off the coast of Queensland, Australia. An anemone of this genus settles on a gastropod shell inhabited by a hermit crab, then covers and extends the shell to produce a chitinous structure termed a carcinoecium. Stylobates birtlesi sp. n. is symbiotic with the hermit crab Sympagurus trispinosus (Balss, 1911. The nature of marginal sphincter muscle and nematocyst size and distribution distinguish Stylobates birtlesi sp. n. from other species in the genus. The four known species are allopatric, each inhabiting a separate ocean basin of the Indo-west Pacific. We also extend the known range of Stylobates loisetteae in the Indian Ocean off the coast of Western Australia.

  4. The Transmission of Chinese Medicine in Australia

    Directory of Open Access Journals (Sweden)

    Mary Garvey

    2011-12-01

    Full Text Available The paper explores some of the issues concerning the transmission of Chinese medicine in Australia, its practitioner training and the future of Chinese medicine as a distinct medical discipline in the Australian context. In China over the last century Chinese medicine was overhauled in order to align it with the biomedical perspective prevalent in the West. These changes, in turn, had important consequences for the transmission of CM in Australia and the West. But while the biomedicalisation of CM has offered the path of least resistance, it has also lead to unworkable simplifications and methodological failures. The paper thus argues for a renewed access to the tradition’s primary sources in order to ally the distinctive features and methods of traditional practice with biomedicine, as an alternative to an outright integration into biomedical practice.

  5. Introduction to Trans Australia Airlines CRM training

    Science.gov (United States)

    Davidson, Jim

    1987-01-01

    Trans Australia believes that its excellent accident rate record is due to a number of factors. It has a good group of standard operating procedures, and its crews are pretty well self-disciplined and adhere to those procedures. But the other thing that it believes is a factor in its safety record is that perhaps it is also due to its preparedness to be innovative, to keep up with what is going on in the rest of the world and, if it looks to have value, then to be amongst the first to try it out. Trans Australia commenced a program similar to Line Oriented Flight Training (LOFT) fairly early in 1979--that being its first windshear program-- which leads to why they are doing a course of resource management training, which we have chosen to call Aircrew Team Management (ATM). This course is detailed in another presentation.

  6. Sporotrichosis from the Northern Territory of Australia

    Science.gov (United States)

    Subedi, Shradha; Kidd, Sarah E.; Baird, Robert W.; Coatsworth, Nicholas; Ralph, Anna P.

    2014-01-01

    We report three cases of lymphocutaneous infection caused by the thermally dimorphic fungus, Sporothrix schenckii from Australia's tropical Northern Territory. Two cases were acquired locally, making them the first to be reported from this region. All three cases presented with ulceration in the limb; however, the classical sporotrichoid spread was present only in the first two cases. Their occurrence within several weeks of each other was suggestive of a common source of environmental contamination such as hay used as garden mulch. Diagnoses were delayed in each case, with each patient having substantial exposure to ineffective antibiotics before the correct diagnosis was made. These cases bring the total number of reported sporotrichosis cases in Australia since 1951 to 199. Lessons from these cases are to consider the diagnosis of sporotrichosis in lesions of typical appearance, even in geographical settings from where this pathogen has not previously been reported. PMID:25200259

  7. Overseas Students in Australia: Costs and Revenues

    OpenAIRE

    Creedy, John; Johnson, David; Baker, Meredith

    1998-01-01

    This paper considers the use of a university cost function to examine the costs and revenues of overseas students in Australia and to estimate the unobservable cost of providing education for only domestic students. The total costs (over all universities) of overseas students are found to be sensitive to variations in the cost function. The sensitivity of the specification of the cost function, particularly in terms of its nonlinearity, is examined. The paper also discusses the use of simple ...

  8. Perceptions of job security in Australia

    OpenAIRE

    Jeff Borland

    2002-01-01

    This study examines workers' perceptions of job security in Australia between August 1999 and May 2002. It uses a new quarterly survey that asks probabilistic questions on the likelihood of involuntary job loss, and of finding a similar job if involuntary job loss occurs. Workers' perceptions of job security are shown to display significant variation by gender, age, education, and recent job mobility, to vary pro-cyclically with business cycle conditions, and to have decreased significantly f...

  9. Additional Forms of Employee Representation in Australia

    OpenAIRE

    Gollan, Paul; Markey, Ray; Ross, Iain

    2001-01-01

    Additional forms of employee representation (AFER) may be defined as any representative mechanism which exists alongside or instead of trade unions, which historically have been the most common form of employee representation in Australia. Little is known about how AFER are composed, their independence from managerial influence, the 'representativeness' of such bodies, and their accountability. In addition, little has been documented about the impact of such structures on either the manageria...

  10. Lepromatous leprosy: A rare presentation in Australia

    OpenAIRE

    Sally Barkla; Sunny Modi

    2013-01-01

    Leprosy (Hansen’s disease) is caused by the obligate intracellular organism Mycobacterium leprae. It is an infectious, chronic granulomatous disease transmitted through close contact. The latest current data shows that in 2010, eleven new cases of leprosy were reported to the National Notifiable Diseases Surveillance System in Australia. We report the case of a patient with untreated chronic lepromatous leprosy diagnosed in Queensland, 2012. Delay in diagnosis may have been due to the rarity ...

  11. Lepromatous leprosy: A rare presentation in Australia

    Directory of Open Access Journals (Sweden)

    Sally Barkla

    2013-04-01

    Full Text Available Leprosy (Hansen’s disease is caused by the obligate intracellular organism Mycobacterium leprae. It is an infectious, chronic granulomatous disease transmitted through close contact. The latest current data shows that in 2010, eleven new cases of leprosy were reported to the National Notifiable Diseases Surveillance System in Australia. We report the case of a patient with untreated chronic lepromatous leprosy diagnosed in Queensland, 2012. Delay in diagnosis may have been due to the rarity of this condition.

  12. Contemporary racism and Islamaphobia in Australia

    OpenAIRE

    Dunn, Kevin M.; Klocker, Natascha; Salabay, Tanya

    2007-01-01

    Abstract Contemporary anti-Muslim sentiment in Australia is reproduced through a racialization that includes well rehearsed stereotypes of Islam, perceptions of threat and inferiority, as well as fantasies that the Other (in this case Australian Muslims) do not belong, or are absent. These are not old or colour-based racisms, but they do manifest certain characteristics that allow us to conceive a racialization process in relation to Muslims. Three sets of findings show how constru...

  13. Australia, Give You Endless Possibilities as Imagination…

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

      It's a place where the light changes everything. From the friendly attitude of its people, to the breathtaking blue of its skies and glistening gold of its sandy beaches. A place unlike any other, with animals and scenery you'll find nowhere else on earth and an unmatched diversity of fiavours, scents and sights. It is Australia, where the possibilities are only as endless as your imagination.……

  14. Australia, Give You Endless Possibilities as Imagination…

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ It's a place where the light changes everything. From the friendly attitude of its people, to the breathtaking blue of its skies and glistening gold of its sandy beaches. A place unlike any other, with animals and scenery you'll find nowhere else on earth and an unmatched diversity of fiavours, scents and sights. It is Australia, where the possibilities are only as endless as your imagination.

  15. GEOMAGNETIC ANOMALY FIELD VECTOR OFF WESTERN AUSTRALIA

    OpenAIRE

    ノギ, ヨシフミ; エグチ, ヨシアキ; セアマ, ノブカズ; イセザキ, ノブヒロ; Yoshifumi, NOGI; Yoshiaki, EGUCHI; Nobukazu, SEAMA; Nobuhiro, ISEZAKI

    1993-01-01

    Vector data of the geomagnetic anomaly field were obtained during the 32nd Japanese Antarctic Research Expedition (JARE-32) off Western Australia. The strikes of the magnetic boundaries at their position were derived from vector data of the geomagnetic anomaly field. These strikes were interpreted as the directions of magnetic anomaly lineations originated either by seafloor spreading (seafloor spreading anomaly) or by morphological structures (structural magnetic anomaly). Some strikes of st...

  16. The Implementation of Monetary Policy in Australia

    OpenAIRE

    Ric Battellino; John Broadbent; Philip Lowe

    1997-01-01

    In January 1990, the Reserve Bank of Australia (RBA) began announcing and explaining changes in the target cash rate. This has increased public understanding of monetary policy and, by increasing the attention given to changes in interest rates, has affected the way in which changes in policy are transmitted to the economy. In addition, the discipline of having to announce and explain changes in the target cash rate to the public has led to a clearer focus on the objectives of monetary policy...

  17. Increasing trends of herpes zoster in Australia.

    Directory of Open Access Journals (Sweden)

    Raina MacIntyre

    Full Text Available Increasing trends in incidence of herpes zoster (HZ have been reported in Australia and internationally. This may reflect the impact of childhood VZV vaccination programs introduced universally in Australia in late 2005. The objective of this study was to evaluate changes in incidence of HZ and PHN in Australia over time, and associated healthcare resource utilisation.Australian data on general practice (GP encounters for HZ, specific antiviral prescribing data from the pharmaceutical benefits scheme, emergency department presentations from the states of NSW and Victoria and national hospitalisation data for HZ were analysed for time trends using regression models. Two time periods (2000-2006 and 2006-2013 were compared which correspond broadly with the pre- and post- universal VZV vaccination period.All data sources showed increasing rates of HZ with age and over time. The GP database showed a significant annual increase in encounters for HZ of 2.5 per 100,000 between 1998 and 2013, and the rates of prescriptions for HZ increased by 4.2% per year between 2002 and 2012. In the 60+ population HZ incidence was estimated to increase from 11.9 to 15.4 per 1,000 persons using GP data or from 12.8 to 14.2 per 1,000 persons using prescription data (p<0.05, between the two periods. Hospitalisation data did not show the same increasing trend over time, except for the age group ≥80 years. Most emergency visits for HZ were not admitted, and showed significant increases over time.The burden of HZ in Australia is substantial, and continues to increase over time. This increase is seen both pre- and post-universal VZV vaccination in 2005, and is most prominent in the older population. The substantial burden of HZ, along with ageing of the Australian population and the importance of healthy ageing, warrants consideration of HZ vaccination for the elderly.

  18. General practice education in Australia. Current issues.

    Science.gov (United States)

    Sturmberg, Joachim; Heard, Sam

    2004-05-01

    General practice education is rapidly changing. Medical students now have exposure to general practice at most year levels, vocational training has been opened to competition, and continuing professional development is a mandatory requirement for maintenance of Health Insurance Commission recognition, and increasingly for state registration. This article outlines the foundations for, and challenge to, building a framework for quality general practice education in Australia. PMID:15227866

  19. Should Australia Export its Native Birds?

    OpenAIRE

    Kingwell, Ross S.

    1994-01-01

    Commercial export from Australia of native birds, wild or captive bred, is prohibited. This paper firstly describes the current legislation and regulations that restrict the export of native birds and discusses why governments have adopted such a regulatory approach to bird species preservation. Secondly, the paper reviews the debate concerning the export ban, pointing out strengths and weaknesses in arguments and indicating the important role of CITES. Lastly, the paper outlines a new case f...

  20. Australia's experience with the variable deposit requirement

    OpenAIRE

    Australian Treasury

    1999-01-01

    This article examines the implementation of the Variable Deposit Requirement (VDR) capital control scheme in Australia in the 1970s. It notes that while capital controls can play a role in certain circumstances, they should not be used as a substitute for addressing underlying policy needs or financial sector reforms of an economy. The scheme was short-term in nature, and depended on subjective judgements about what level of capital inflow was appropriate at the time, and was unrelated to lon...

  1. Perception of Innovative Crop Insurance in Australia

    OpenAIRE

    Meuwissen, M.P.M.; Molnar, T.A.

    2010-01-01

    Worldwide, extreme climate risks cause stakeholders in food supply chains to search for new risk management tools. In Australia, recently so‐called crop yield simulation insurance has been introduced based on an integrated agrometeorological simulation model. Current uptake is relatively low, possibly because Australian farmers perceive commodity price risk as more important than climate risk. Also, they perceive risk management tools such as water management and diversification as more impor...

  2. Sporotrichosis from the Northern Territory of Australia

    OpenAIRE

    Subedi, Shradha; Kidd, Sarah E.; Baird, Robert W.; Coatsworth, Nicholas; Ralph, Anna P

    2014-01-01

    We report three cases of lymphocutaneous infection caused by the thermally dimorphic fungus, Sporothrix schenckii from Australia's tropical Northern Territory. Two cases were acquired locally, making them the first to be reported from this region. All three cases presented with ulceration in the limb; however, the classical sporotrichoid spread was present only in the first two cases. Their occurrence within several weeks of each other was suggestive of a common source of environmental contam...

  3. A new species of Canalisporium from Australia

    OpenAIRE

    Goh, TK; Hyde, KD

    2000-01-01

    Canalisporium variabile sp. nov. is described and illustrated based on several specimens from submerged wood and decaying palm rachis in Australia. It is most similar to C. pallidurn in having pale conidia with clearly visible septa and canals, but they are two distinct species. In C. pallidurn, conidia are more stable in shape, size and septation, with mostly a single column of vertical septa. In C. vam'abile, however, conidia are more variable in morphology, with mostly two columns of verti...

  4. Asian immigrant settlement and adjustment in Australia.

    Science.gov (United States)

    Khoo, S; Kee, P; Dang, T; Shu, J

    1994-01-01

    "This article provides a broad assessment of the settlement and adjustment of people born in the many countries of Asia who are resident in Australia, based on recently available data from the 1991 Census of Population and Housing. It examines some indicators of economic adjustment such as performance in the labor market, and some indicators of social adjustment, such as acquisition of English language proficiency." PMID:12289777

  5. The Immigrant Housing Market: Analyses for Australia

    OpenAIRE

    Jamie Chua; Paul W. Miller

    2005-01-01

    This paper examines the immigrant adjustment process in Australia from the perspective of the housing market. It shows that immigrant “catch-up” to the native born in the housing market is much more rapid than in the labour market. A decomposition of the estimated coefficients of a logit model of tenure choice is developed that gives formal recognition to the immigrant adjustment process. The results from this decomposition demonstrate the importance of taking account of immigrant adjustment ...

  6. Gun Control in Australia: A Criminological Perspective

    OpenAIRE

    Rick Sarre

    2015-01-01

    In recent months there has been an upsurge in contributions to the popular press from social commentators insisting that guns make our nation safer. This essay questions these assertions. The paper provides evidence to support a contrary affirmation: that is, in order to have a reduction in gun violence, there needs to be a reduction in the number of guns generally, and a continuation of the legal controls that currently shape firearms policy in Australia.

  7. Best practice fox management in Australia

    OpenAIRE

    Saunders, G.; McLeod, L.

    2011-01-01

    Red foxes (Vulpes vulpes) impact on populations of many prey species in Australia, and so are the targets of widespread management programs. In this study we monitored fox management programs already operating across 4.5 million hectares of regional New South Wales (NSW) to compare the impact of varying fox baiting effort on the survival of lambs as a major prey species. The spatial coverage and frequency of fox baiting were both correlated with lamb survival. Lamb survival was higher in area...

  8. The Growth Effects of Education in Australia.

    OpenAIRE

    Paradiso, Antonio; Kumar, Saten; Rao, B. Bhaskara

    2011-01-01

    In this paper we estimate the growth effects of human capital with country-specific time series data for Australia. Previous empirical studies, based on international data, have been inconclusive, in terms of the extent of the contribution of human capital to growth. We extend the Solow (1956) growth model by using educational attainment as a measure of human capital, as developed by Barro and Lee (2010). The extended Solow (1956) model performs well after allowing for the presence of structu...

  9. Macroeconomic Policy: Some International Lessons for Australia

    OpenAIRE

    Corden, W. Max

    1995-01-01

    This paper reviews recent macroeconomic experience outside Australia, especially in the United States, the United Kingdom and continental Europe, and compares it with Australian experience. It discusses booms and recessions, inflation (especially the "credibility" issue), unemployment (cyclical and structural), and exchange rate policy. It also discusses implications for monetarism and rational expectations theories. Two conclusions are that the big remaining problem in Europe and in Australi...

  10. Gun Control in Australia: A Criminological Perspective

    Directory of Open Access Journals (Sweden)

    Rick Sarre

    2015-11-01

    Full Text Available In recent months there has been an upsurge in contributions to the popular press from social commentators insisting that guns make our nation safer. This essay questions these assertions. The paper provides evidence to support a contrary affirmation: that is, in order to have a reduction in gun violence, there needs to be a reduction in the number of guns generally, and a continuation of the legal controls that currently shape firearms policy in Australia.

  11. The regulation of herbal medicines in Australia

    International Nuclear Information System (INIS)

    Complementary medicines, including herbal medicines in Australia are regulated under therapeutics goods legislation. Based on risk, Australia has developed a two tiered approach to the regulation of therapeutic goods. Listed medicines are considered to be of lower risk than Registered medicines. Most, but not all, complementary medicines are Listed medicines. Managing the risk associated with therapeutic goods, including complementary medicines, is exerted through the processes of licensing of manufacturers; pre-market assessment of products; and post-market regulatory activity. Herbal medicines may be associated with low or high risk depending on the toxicity of ingredients, proposed dosage, appropriateness of the indications and claims for self-diagnosis and management and the potential for adverse reactions. Registered medicines are individually evaluated for safety, quality and efficacy before they are released onto the market. Listed medicines are individually assessed by the Therapeutic Goods Administration for compliance with legislation, they are not evaluated before release. They may only be formulated from ingredients that have undergone pre-market evaluation for safety and quality and are considered low risk. Listed complementary medicines may only carry indications and claims for the symptomatic relief of non-serious conditions, health maintenance, health enhancement and risk reduction. An important feature of risk management in Australia is that early market access for low risk complementary medicines is supported by appropriate post-market regulatory activity

  12. Symptomotology and Racial Politics in Australia

    Directory of Open Access Journals (Sweden)

    Ian Buchanan

    2012-01-01

    Full Text Available Jindabyne (a movie directed by Ray Lawrence, 2006 begins with the murder of a young aboriginal woman, but its real focus is the way people respond to this murder. In doing so, it tells several interesting truths about race relations in Australia today. I want to suggest that Jindabyne can usefully be read as a national allegory (in Jameson’s sense of the word. It maps or diagrams the cultural and political tropes of the present moment in history. My basic hypothesis is that it cannot be a coincidence that Jindabyne should give such prominence to the cultural problematic of the apology at this particular juncture in Australia’s history. Although this aspect of the film is scarcely mentioned in any of the reviews that accompanied the film’s premier, it strikes me that the timing is symptomatic: it is a topic that as Deleuze once said about difference was very much in the air. Produced only two years before the official national apology the Prime Minister of Australia Kevin Rudd made to the Indigenous peoples of Australia on February 13, 2008, Jindabyne responds to a complex assemblage of cultural problematics that have been on the national political agenda ever since the release in 1995 of Bringing Them Home, the Human Rights and Equal Opportunity Commission’s report on its national inquiry into the so-called “Stolen Generation”.

  13. Cannabis policy in Australia and New Zealand.

    Science.gov (United States)

    Abel, S

    1997-12-01

    This paper describes and compares current developments in policies to deal with cannabis in Australia and New Zealand. Both countries are bound by international conventions to control cannabis and in each case cannabis use, possession, cultivation and supply is illegal. In both countries almost all the supply is grown locally and patterns of use and health concerns appear to be similar. Strategies used to deal with cannabis include: demand reduction through enforcement of legislation, drug education and treatment; supply reduction through enforcement of legislation and crop recovery operations; and harm reduction through diversion of some offenders from the courts system, lenient enforcement policies for users and, in Australia, the formal decriminalization of cannabis use in two states/territories and de facto decriminalization in another. Australia has had a co-ordinated national drugs policy with a stated harm reduction focus for over a decade, while in New Zealand efforts to co-ordinate policy have been delayed by ongoing debates about cannabis's harm potential and what constitutes an appropriate approach. However, a national drugs policy with a professed harm reduction focus is currently being finalized. Despite these developments, government cut-backs and international and local prohibitionist influences on policy in both countries suggest that a harm reduction model may not necessarily be secure. PMID:16203457

  14. High-resolution modelling of interactions between soil moisture and convection development in mountain enclosed Tibetan basin

    Science.gov (United States)

    Gerken, T.; Babel, W.; Herzog, M.; Fuchs, K.; Sun, F.; Ma, Y.; Foken, T.; Graf, H.-F.

    2015-05-01

    The Tibetan Plateau plays a significant role in the atmospheric circulation and the Asian monsoon system. Turbulent surface fluxes and the evolution of boundary layer clouds to deep and moist convection provide a feedback system that modifies the Plateau's surface energy balance on scales that are currently unresolved in mesoscale models. This work analyses the land surface's role and specifically the influence of soil moisture on the triggering of convection at a cross-section of the Nam Co Lake basin, 150 km north of Lhasa using a cloud resolving atmospheric model with a fully coupled surface. The modelled turbulent fluxes and development of convection compare reasonably well with the observed weather. The simulations span Bowen-ratios of 0.5 to 2.5. It is found that convection development is strongest at intermediate soil moistures. Dry cases with soils close to the permanent wilting point are moisture limited in the convection development, while convection in wet soil moisture cases is limited by cloud cover reducing incoming solar radiation and sensible heat fluxes. This has a strong impact on the surface energy balance. This study also shows that local development of convection is an important mechanism for the upward transport of water vapour that originates from the lake basin that can then be transported to dryer regions of the plateau. Both processes demonstrate the importance of soil moisture and surface-atmosphere interactions on the energy and hydrological cycles of the Tibetan Plateau.

  15. High-resolution modelling of interactions between soil moisture and convective development in a mountain enclosed Tibetan Basin

    Science.gov (United States)

    Gerken, T.; Babel, W.; Herzog, M.; Fuchs, K.; Sun, F.; Ma, Y.; Foken, T.; Graf, H.-F.

    2015-09-01

    The Tibetan Plateau plays a significant role in atmospheric circulation and the Asian monsoon system. Turbulent surface fluxes and the evolution of boundary-layer clouds to deep and moist convection provide a feedback system that modifies the plateau's surface energy balance on scales that are currently unresolved in mesoscale models. This work analyses the land surface's role and specifically the influence of soil moisture on the triggering of convection at a cross section of the Nam Co Lake basin, 150 km north of Lhasa using a cloud-resolving atmospheric model with a fully coupled surface. The modelled turbulent fluxes and development of convection compare reasonably well with the observed weather. The simulations span Bowen ratios of 0.5 to 2.5. It is found that convective development is the strongest at intermediate soil moisture. Dry cases with soils close to the permanent wilting point are moisture limited in convective development, while convection in wet soil moisture cases is limited by cloud cover reducing incoming solar radiation and sensible heat fluxes, which has a strong impact on the surface energy balance. This study also shows that local development of convection is an important mechanism for the upward transport of water vapour, which originates from the lake basin that can then be transported to dryer regions of the plateau. Both processes demonstrate the importance of soil moisture and surface-atmosphere interactions on the energy and hydrological cycles of the Tibetan Plateau.

  16. Tulare Basin protection plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The Tulare Basin Protection Plan has been initiated by The Nature Conservancy to elucidate the problems and opportunities of natural diversity protection....

  17. Mitigation : Closed Basin Project

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The upcoming meeting on waterfowl mitigation for the Closed Basin Project will have several people talk about possible changes to the waterfowl mitigation program....

  18. Early Mesozoic basin aquifers

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This data set represents the extent of the Early Mesozoic basin aquifers in the states of Massachusettes, Connecticut, New York, New Jersey, Pennsylvania, Maryland,...

  19. California Air Basins

    Data.gov (United States)

    California Department of Resources — Air ResourcesCalifornia Air Resources BoardThe following datasets are from the California Air Resources Board: * arb_california_airbasins - California Air BasinsThe...

  20. Media and Australia's replacement reactor project

    International Nuclear Information System (INIS)

    In September 1997, the Commonwealth Government of Australia announced a proposal to build a replacement nuclear research reactor at Lucas Heights in Sydney. Extensive public consultation, parliamentary debate and independent reports were prepared to ensure that the new facility would meet strict international requirements, national safety and environmental standards, and performance specifications servicing the needs of Australia - for decades to come. On 6 June 2000, Argentine company INVAP SE was announced as the preferred tenderer. In July 2000 contracts were signed between INVAP and the Australian Nuclear Science and Technology Organisation for the construction the replacement reactor, due to be completed in 2005. In order to retain a strong local presence, INVAP undertook a joint venture with two of Australia's foremost heavy construction businesses. Briefly the new research reactor will be a replacement for the ageing Australian Reactor (HIFAR). Nuclear science and technology, in Australia, is no stranger to media controversy and misinformation. Understandably the announcement of a preferred tenderer followed by the signing of contracts, attracted significant national and international media attention. However in the minds of the media, the issue is far from resolved and is now a constant 'news story' in the Australian media. Baseless media stories have made claims that the project will cost double the original estimates; question the credibility of the contractors; and raise issues of international security. The project is currently linked with Australia's requirements for long term nuclear waste management and there has been an attempt to bring national Indigenous People's issues into play. Some of these issues have been profiled in the press internationally. So, just to set the record straight and give you an appropriate impression of what's 'really happening' I would like to highlight a few issues, how ANSTO dealt with these, and what was finally reported

  1. Recap of the 22nd Annual Conference on Pacific Basin Finance, Economics, Accounting and Management

    OpenAIRE

    Cheng-Few Lee; Yasuo Hoshino; Mohd Fazli Mohd Sam

    2015-01-01

    This is the 22nd Annual Conference on Pacific Basin Finance, Economics, Accounting, and Management which was held in Aichi University, Nagoya, Japan on September 4 to September 5, 2014. The first conference was held at Rutgers University in 1993. Since then, the conference has been held in Hong Kong (1994, 1998), Taipei (1995, 1999, 2003, 2006, 2011), Bangkok (2000, 2004, 2009), Rutgers (1996, 2001, 2005, 2012), Singapore (1997, 2002), Vietnam (2007), Australia (2008, 2013) and China (2010). ...

  2. K Basin Hazard Analysis

    Energy Technology Data Exchange (ETDEWEB)

    PECH, S.H.

    2000-08-23

    This report describes the methodology used in conducting the K Basins Hazard Analysis, which provides the foundation for the K Basins Final Safety Analysis Report. This hazard analysis was performed in accordance with guidance provided by DOE-STD-3009-94, Preparation Guide for U. S. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports and implements the requirements of DOE Order 5480.23, Nuclear Safety Analysis Report.

  3. The Aquitaine basin

    Energy Technology Data Exchange (ETDEWEB)

    Biteau, J.-J.; Le Marrec, A.; Le Vot, M.; Masset, J.-M.

    2006-07-01

    The Aquitaine Basin is located in the southwest of France, between the Gironde Arch in the north and the Pyrenean Mountain Chain in the south. It is a triangular-shaped domain, extending over 35000km{sup 2}. From north to south, six main geological provinces can be identified: (1) the Medoc Platform located south of the Gironde Arch; (2) the Parentis sub-basin; (3) the Landes Saddle; (4) the North Aquitaine Platform; (5) the foreland of the Pyrenees (also known as the Adour, Arzacq and Comminges sub-basins); and (6) the Pyrenean fold-and-thrust belt. Only the Parentis sub-basin, the foreland of the Pyrenean Chain and a minor part of the fold-and-thrust belt itself are proven hydrocarbon provinces. The Aquitaine Basin, in turn, is subdivided into four sub-basins - the Parentis, Adour-Arzacq, Tarbes and Comminges areas. The lozenge shape of these depocentres is related to the Hercynian tectonic framework of the Palaeozoic basement, reactivated during Early Cretaceous rifting. This rift phase aborted at the end of the Albian (prior to the development of an oceanic crust) in response to the beginning of the subduction of the Iberian plate under the European plate. During the Upper Cretaceous, continued subduction led to the creation of northwards-migrating flexural basins. In the Eocene, a paroxysmal phase of compression was responsible for the uplift of the Pyrenean Mountain Chain and for the thin-skinned deformation of the foreland basin. The resulting structuration is limited to the south by the internal core of the chain and to the north by the leading edge of the fold-and-thrust belt, where the Lacq and Meillon gas fields are located. Four main petroleum provinces have been exploited since the Second World War: (1) the oil-prone Parentis sub-basin and (2) salt ridges surrounding the Arzacq and Tarbes sub-basins; and (3) the gas-prone southern Arzacq sub-basin (including the external Pyrenean fold-and-thrust belt and the proximal foreland sub-basin) and (4

  4. Trends in Pan Evaporation and Application of the Complimentary Relationship of Evaporation in the Great Basin, USA

    Science.gov (United States)

    Huntington, J. L.; Caldwell, T.; Naranjo, R.; Burak, S.; Tyler, S.

    2007-12-01

    Evaluating available water resources in the Great Basin is an increasing topic of discussion by several local, State, and Federal government agencies due to proposals for water importation into areas of rapid population growth. In estimating a water budget for a particular flow system in the Great Basin, groundwater evapotranspiration (ET) from phreatophyte vegetation is often the most important as it is the only water budget component that can be estimated with some certainty, opposed to mountain block recharge and interbasin subsurface flow. Bouchet's complimentary relationship of evaporation has drawn noteworthy attention in recent years, not only because of its use in explaining observed changes in the hydrologic cycle, but also for its use in predicting ET using readily available meteorological data. The objective of this presentation is twofold: 1) to discuss pan evaporation trends in the Great Basin, and 2) discuss results from the application of the complimentary relationship for predicting evapotranspiration from phreatophyte shrubs when compared to measured ET at several U.S. Geological Survey eddy correlation and Bowen ratio sites. Initial findings indicate a decrease of pan evaporation in Death Valley, CA, the lowest, hottest, and driest location in North America, an opposite trend from analysis of several other sites in the Great Basin that indicate an increase of pan evaporation. It is believed that these opposing trends are likely the result of local water availability surrounding the pan, and or data quality. The application of a symmetric complimentary relationship indicate satisfactory results when compared to measured evapotranspiration, however, during the hottest months of the year the predicted ET over estimates the measured. Further investigation of micrometeorological data suggests that an asymmetric complimentary relationship between potential and actual ET exists, and when taken into account, improves the predictions markedly.

  5. Mound Spring Complexes in Central Australia: An Analog for Martian Groundwater Fed Outflow Channels?

    Science.gov (United States)

    Clarke, J. D. A.; Stoker, C.

    2003-01-01

    The arid inland of Australia contains a diversity of landscapes and landscape processes, often of great antiquity, extending back to the Mesozoic and Paleozoic. The potential of this landscape as a source of Mars analogs has, however, been little explored. The few examples studied so far include radiation-tolerant microbes in thermal springs and hematite-silica hydrothermal alteration near Arkaroola in the Finders Ranges, and aeolian landforms at Gurra Gurra water hole the north east of Arkaroola. Further Australian Mars analog studies were provided by the studies of Bourke and Zimbelman of the paleoflood record of the Todd and Hale Rivers in central Australia. To facilitate study of such analogues, Mars Society Australia has embarked on a project to construct a Mars Analog Research Station near Arkaroola. The international scientific community will soon have the opportunity to participate in Mars analog studies in central Australia utilizing this facility. An area of considerable Mars analog potential is the mound spring complexes that occur at the margins of the Great Artesian Basin (GAB) which underlies 22% of the Australian continent and covers 1.7 million km2. The mound springs are formed when ground water flows to a topographic low, and subsurface strata dips up causing a hydrological head at the surface. Minerals precipitated at the spring discharge zone form low mesas or "mounds", the height of which are controlled by the hydrological head. This paper describes the Dalhousie Mound Spring Complex (DMC) in the northern part of South Australia (Figure 1), and its potential as a Mars analog. Hydrogeology: The DMC consists of a cluster of more than 60 active springs formed by natural discharge from the GAB). Total measured discharge from the GAB is 1.74 GL per day, estimated unfocussed natural leakage through the aquaclude is thought be approximately equal to this figure. Some 54 ML per day are currently discharged by the DMC, 3% of the measured total. The

  6. Australia announces plans for expanded marine reserve network

    Science.gov (United States)

    Showstack, Randy

    2012-06-01

    Australia announces plans for expanded marine reserve network The Australian government has announced plans to increase the nation's network of marine reserves from 27 to 60, bringing the total size of the network to 3.1 million square kilometers, Australia's environment minister Tony Burke said on 14 June. The expansion, which would place more than one third of Australia's waters under protection, requires a 60-day consultation before it can become law.

  7. Climate Change, Mining and Traditional Indigenous Knowledge in Australia

    OpenAIRE

    Tony Birch

    2016-01-01

    Australia, in common with nations globally, faces an immediate and future environmental and economic challenge as an outcome of climate change. Indigenous communities in Australia, some who live a precarious economic and social existence, are particularly vulnerable to climate change. Impacts are already being experienced through dramatic weather events such as floods and bushfires. Other, more gradual changes, such as rising sea levels in the north of Australia, will have long-term negative ...

  8. Australia and New Zealand Dialysis and Transplant Registry

    OpenAIRE

    McDonald, Stephen P

    2015-01-01

    The ANZDATA Registry includes all patients treated with renal replacement therapy (RRT) throughout Australia and New Zealand. Funding is predominantly from government sources, together with the non-government organization Kidney Health Australia. Registry operations are overseen by an Executive committee, and a Steering Committee with wide representation. Data is collected from renal units throughout Australia and New Zealand on a regular basis, and forwarded to the Registry. Areas covered in...

  9. Wetland Preservation in Australia: The Administrative and Policital Threats

    Institute of Scientific and Technical Information of China (English)

    Mark Yaolin Wang

    2008-01-01

    The wetlands in Australia are of great physical, chemical and biological variety due to the continent's age, geological history and climate. The traditional physical and biological threats remain as the main challenges for wetland preservation in Australia. However, it has been increasingly recognized that the immediate survival of wetlands are being affected by more subtle threats, such as administrative and political threats. This paper identifies these non-physical threats and discusses how and why they have become the major barriers for sustainable wetland preservation in Australia. Finally, this paper calls for more practical policies and solutions to be implemented for sustainable wetland preservation in Australia.

  10. Tay-Sachs disease: current perspectives from Australia

    OpenAIRE

    Lew RM; Burnett L; Proos AL; Delatycki MB

    2015-01-01

    Raelia M Lew,1,7 Leslie Burnett,2,3,4 Anné L Proos,2 Martin B Delatycki5,6 1Department of Obstetrics and Gynecology, QEII Research Institute for Mothers and Infants, The University of Sydney, Australia; 2NSW Health Pathology North, Royal North Shore Hospital, St Leonards, Australia; 3SEALS, Prince of Wales Hospital, Randwick, Australia; 4Sydney Medical School-Northern, Royal North Shore Hospital E25, University of Sydney, Sydney, Australia; 5Department of Clinical Genetics...

  11. Paediatric CT imaging trends in Australia

    International Nuclear Information System (INIS)

    Full text: The use of CT has rapidly increased since its introduction. Although an important medical tool for diagnosis and treatment, CT is rec ognised as being among the highest contributors to population radiation exposure. As the risks associated with exposure are higher for children than for adults, this study assessed the impact of paediatric CT in Australia by analysing imaging trends. CT imaging trends were derived from Medicare data. Comparable data from a dedicated paediatric hospital (Royal Children's Hospital Melbourne (RCH)) were analysed to determine the validity of utilising Medicare statistics in the younger age groups. The resulting trends reflect the situation for paediatric CT imaging in Australia. In 2009, 2.1 million CT services were billed to Medicare in Australia for children and adults. The average annual growth in the number of CT services provided since 1994 was 8.5%, compared with population growth of 1.4%. Comparison of RCH and Medicare data revealed that only one third of pae diatric CT imaging is captured by Medicare. Combining the data sets showed that over the last 20 years, there has been an average annual increase of 5.1% in the CT imaging rate for 0 to 18-year-olds. However, in recent years, growth in the imaging rate for 11 to 18-year-olds has slowed, while for 5 to 10-year-olds the imaging rate has declined. The significant growth in CT services is attributable to increased demand from the adult demographic. Conversely, increases in the imaging rate for paediatric patients have slowed overall. In fact, for some age groups the rate has fallen.

  12. Development of NORM Management in Australia

    International Nuclear Information System (INIS)

    Australia has had a long involvement with NORM, mainly because of mining and processing of mineral ores. Radium mining was carried out in the early 20th century. After 1949, there was a rapid expansion in uranium mining (particularly in the Northern Territory) and mineral sand mining. Australia is a Federation of the Commonwealth, six States and two Territories, which independently regulate within their jurisdiction. Early mineral extraction and processing operations were unregulated, resulting in the existence of a large number of legacy sites. Regulation of uranium mining started in the 1970s, and mineral sand mining after 1980. The regulations vary in detail between jurisdictions. Most other NORM situations are not regulated in any of the States or Territories. A major review of the Western Australian mineral sand industry in the 1980s led to considerable reductions in doses to workers. Remediation of many of the old uranium mine sites in the Northern Territory has been carried out over the last 15 years and is continuing. International awareness of NORM as a potential source of risk to workers, members of the public and the environment has increased significantly in recent years. After an extensive stakeholder consultation process and the development of a position paper summarizing the NORM situation in Australia, a Safety Guide was developed, to enhance awareness and provide general guidance on NORM management. The Safety Guide recommends a graded approach to NORM management, based on exclusion, exemption, clearance and regulation. It includes sections on general radiation protection principles, impact assessment, assessment of the need for regulation, development of a NORM management plan, and annexes on NORM management in the oil and gas, bauxite processing and phosphate industries, written by experts from the industries. These industries were chosen because of their experience with NORM management and the availability of good data. (author)

  13. Unlocking Australia's Language Potential. Profiles of 9 Key Languages in Australia. Volume 6: Italian.

    Science.gov (United States)

    Di Biase, Bruno; And Others

    The status of the Italian language in Australia, particularly in the educational system at all levels, in Australian society in general, and in trade, technology, and tourism is discussed in this report. It begins with a description of the teaching of Italian in elementary, secondary, higher, adult/continuing, and teacher education. Trends are…

  14. Successful Swiss solar bicycles in Australia

    International Nuclear Information System (INIS)

    The article takes a look at the Swiss 'Spirit of Bike' team's success in the 'Power Challenge' race across Australia using solar-bicycles based on commercially available models. Apart from the sporting aspects of race, technical details on the cycles and their supply of solar power are given. Also, the history behind the success of the team is presented and the monitoring of man (and woman) and machine during the race is described. The article also discusses the electric bicycles that are commercially available and the potential of these energy-efficient vehicles in Switzerland

  15. Full Scale Explosive Tests in Woomera, Australia

    Institute of Scientific and Technical Information of China (English)

    GUPTA A; MENDIS P; LUMANTARNA R; NGO T

    2006-01-01

    Two large explosion trials (5 000 kg TNT and 500 kg ANFO) were conducted in Woomera,Australia in April/May 2006.Advance Protective Technologies for Engineering Structures (APTES) group tested 2 large single-storey concrete modules with individual components such as doors,windows and tiled panels.A description of the trial and details of various modules tested in these trials are presented in the paper.Numerical modelling and simulations are performed using computer programs,CONWEP,AIR3D and AUTODYN.A comparison of the pressure time histories obtained using these codes is made along with the concluding remarks.

  16. The Bank Lending Channel: Evidence from Australia

    Directory of Open Access Journals (Sweden)

    Luke Liu

    2014-06-01

    Full Text Available This study explores how monetary policy changes flow through the banking sector in Australia. Drawing on data between 2004 and 2010, we divide banks into three groups according to their size, and examine the impact of that cash rate change on lending of different types of loans. We find the response of bank lending after a monetary policy change varies with the size of the bank as well as the types of loan. Smaller banks are more sensitive to policy rate changes, and household loans, government loans and intra-group loans are less responsive to monetary policy compared with financial and non-financial loans.

  17. Detecting regime shifts in marine systems with limited biological data: An example from southeast Australia

    Science.gov (United States)

    Litzow, Michael A.; Hobday, Alistair J.; Frusher, Stewart D.; Dann, Peter; Tuck, Geoffrey N.

    2016-02-01

    The ability to detect ecological regime shifts in a data-limited setting was investigated, using southeast Australian ecosystems as a model. Community variability was summarized for 1968-2008 with the first two principal components (PCs) of recruitment estimates for six fish stocks and reproductive parameters for four seabird species; regional climate was summarized for 1953-2008 with the first two PCs for three parameters (sea surface temperature [SST], sea surface salinity, surface nitrate) measured at two stations; and basin-scale climate variability was summarized for 1950-2012 with mean South Pacific SST and the first two PCs of detrended South Pacific SST. The first two biology PCs explained 45% of total community variability. The first two PCs of basin-scale SST showed abrupt shifts similar to "regime" behavior observed in other ocean basins, and the first PC of basin-scale SST showed significant covariation with the first PC of regional climate. Together, these results are consistent with the strong community variability and decadal-scale red noise climatic variability associated with Northern Hemisphere regime shifts. However, statistical model selection showed that the first two PCs of regional climate and the first PC of biology time series all exhibited linear change, rather than abrupt shifts. This result is consistent with previous studies documenting rapid linear change in the climate and biology of southeast Australian shelf ecosystems, and we conclude that there is no evidence for regime shift behavior in the region's ecology. However, analysis of a large set of previously-published biological time series from the North Pacific (n = 64) suggests that studies using fewer than ∼30 biological time series, such as this one, may be unable to detect regime shifts. Thus we conclude that the nature of ecological variability in the region cannot be determined with available data. The development of additional long-term biological observations is needed

  18. Return to Black Mountain palaeomagnetic reassessment of the Chatsworth and Ninmaroo formations, western Queensland, Australia

    CERN Document Server

    Anderson, K L; Lackie, M A; Schmidt, P W; 10.1111/j.1365-246X.2003.02164.x

    2004-01-01

    Palaeomagnetic results from late Middle Cambrian-Early Ordovician carbonate sequences sampled at Black Mountain (Mt Unbunmaroo), Mt Datson and near Chatsworth Station (southeastern Georgina Basin) are presented. A palaeomagnetic reassessment of these carbonates was designed in an effort to constrain regional magnetization ages as results from an earlier study, conducted at Mt Unbunmaroo, play a pivotal role in a proposed Cambrian inertial interchange true polar wander (IITPW) event. Remanent magnetizations within these carbonates were found to be variably developed with most specimens displaying two of the five isolated components. Component PF, for which goethite is the identified remanence carrier, is thought to reflect a chemical remanent magnetization of recent origin. Component TR, held by haematite, has a palaeomagnetic pole consistent with the Tertiary segment of Australia's apparent polar wander path (APWP) and most probably was acquired as a consequence of prolonged weathering during this period. The...

  19. Donor research in australia: challenges and promise.

    Science.gov (United States)

    Masser, Barbara; Smith, Geoff; Williams, Lisa A

    2014-07-01

    Donors are the key to the core business of Blood Collection Agencies (BCAs). However, historically, they have not been a focus of research undertaken by these organizations. This model is now changing, with significant donor research groups established in a number of countries, including Australia. Donor research in the Australian Red Cross Blood Service (Blood Service) is concentrated in the Donor and Community Research (DCR) team. Cognizant of the complex and ever-changing landscape with regard to optimal donor management, the DCR team collaborates with academics located at universities around Australia to coordinate a broad program of research that addresses both short- and-long term challenges to the blood supply. This type of collaboration is not, however, without challenges. Two major collaborative programs of the Blood Service's research, focusing on i) the recruitment and retention of plasmapheresis donors and ii) the role of the emotion pride in donor motivation and return, are showcased to elucidate how the challenges of conducting collaborative BCA research can be met. In so doing, these and the other research programs described herein demonstrate how the Blood Service supports and contributes to research that not only revises operational procedures but also contributes to advances in basic science. PMID:25254025

  20. Private health insurance and regional Australia.

    Science.gov (United States)

    Lokuge, Buddhima; Denniss, Richard; Faunce, Thomas A

    2005-03-21

    Since 1996, an increasing proportion of federal government expenditure has been directed into Australia's healthcare system via private health insurance (PHI) subsidies, in preference to Medicare and the direct funding of public health services. A central rationale for this policy shift is to increase the use of private hospital services and thereby reduce pressure on public inpatient facilities. However, the impact of this reform process on regional Australia has not been addressed. An analysis of previously unpublished Australian Bureau of Statistics data shows that regional Australians have substantially lower levels of private health fund membership. As a result, regional areas appear to be receiving substantially less federal government health funding, compared with cities, than if these funds were allocated on a per-capita basis. We postulate that the lower level of membership in regional areas is mainly due to the limited availability of private inpatient facilities, making PHI less attractive to rural Australians. We conclude that PHI as a vehicle for mainstream federal health financing has potential structural failures that disadvantage regional Australians.

  1. Private health insurance and regional Australia.

    Science.gov (United States)

    Lokuge, Buddhima; Denniss, Richard; Faunce, Thomas A

    2005-03-21

    Since 1996, an increasing proportion of federal government expenditure has been directed into Australia's healthcare system via private health insurance (PHI) subsidies, in preference to Medicare and the direct funding of public health services. A central rationale for this policy shift is to increase the use of private hospital services and thereby reduce pressure on public inpatient facilities. However, the impact of this reform process on regional Australia has not been addressed. An analysis of previously unpublished Australian Bureau of Statistics data shows that regional Australians have substantially lower levels of private health fund membership. As a result, regional areas appear to be receiving substantially less federal government health funding, compared with cities, than if these funds were allocated on a per-capita basis. We postulate that the lower level of membership in regional areas is mainly due to the limited availability of private inpatient facilities, making PHI less attractive to rural Australians. We conclude that PHI as a vehicle for mainstream federal health financing has potential structural failures that disadvantage regional Australians. PMID:15777145

  2. Determinants of Business Exits in Australia

    Directory of Open Access Journals (Sweden)

    Yongqiang Li

    2014-09-01

    Full Text Available The annually increasing firm exits have significant financial, legal and social impacts on productivity, employment and economic growth in Australia. However, evidence of the impacts of firm exits is sparse. This paper undertakes a first-ever study that empirically investigates the determinants and their impacts on firm churn. This paper is innovative to the literature in four aspects: (1 Local Region Areas (LGAs data, rarely available in other countries, has been used for the analysis; (2 using LGAs as the basic analytical unit is able to eliminate the heterogeneity problems encountered by other studies which are based on national and cross-national data; (3 panel data modelling techniques identify robust evidence; (4 systematic statistical tests guarantees the robustness of the results. The dataset, provided by Australia Bureau of Statistics, include 3462 observations of 577 Local Government Areas (LGAs during 2004-2009. The research identifies variables positively and negatively affecting the exits and finds that size matters in determining business exits. The last section concludes with a discussion of limitations and future research directions.

  3. Rediscovering university teaching hospitals for Australia.

    Science.gov (United States)

    Penington, David G

    2008-09-15

    Partnership between research and health services has a long history in other countries, but has been relatively recent in Australia, with several models arising in the 1960s and 1970s as research-based specialties developed. Since the implementation of Medibank, which became Medicare, Australian Health Care Agreements have been primarily crafted on the basis of transactional numbers, ignoring the need for links with teaching and research and the need to implement new developments. Education and research have been seen as the responsibility of the federal government, and hospitals are progressively less recognised or funded for these functions by the states. Australia's teaching hospitals are in danger of falling seriously behind those in other countries and losing their capacity to monitor quality, to innovate and to branch into new strategies in partnership with primary care services. We should look at initiatives in other countries such as the United Kingdom and Canada, which are making big strides in tackling similar issues. University hospitals hold the key, if appropriately linked with other services. The current Australian Health Care Agreements are on hold. A new agency is needed to support clinical and service-related research, with a new structure and track for federal government funding, and providing oversight of research and development, of clinical governance and quality of outcomes in health care, linked with new strategies for prevention and treatment. A component of the foreshadowed additional federal government funding for health should be sequestered to set up such an agency. PMID:18803539

  4. Australia's South African war 1899-19021

    Directory of Open Access Journals (Sweden)

    Craig Wilcox

    2012-02-01

    Full Text Available Around twenty thousand Australians fought in the great war between the British empire and the republics of the Orange Free State and the Transvaal. Those Australians constituted five in every thousand of their people, or three in every two hundred of their male workers. In South Africa they made up just one in every twenty-five soldiers in a British army of almost half a million.2 As these bald figures immediately suggest, Australia's contribution to the war was too small to be decisive, and its experience of the war involved too few of its people to make a powerful impact on its society, let alone wrench its history onto some different course. Still, that contribution and that experience were unprecedented for a people who had never before gone to war as a people, and deserve more attention - and more balanced, dispassionate, critical attention - than they've yet received from historians of the war, of Australia, and of the British empire.3 In this lecture I'll strive for such balance by outlining why and how Australians went to war in South Africa, what their soldiers did there, and the war's legacy for their country and their descendants today.

  5. Modifed Great Basin Extent (Buffered)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Two different great basin perimeter files were intersected and dissolved using ArcGIS 10.2.2 to create the outer perimeter of the great basin for use modeling...

  6. Management of radio frequency radiation exposures in telecom Australia

    International Nuclear Information System (INIS)

    Telecom Australia is the largest non-military user of radio frequency radiation (RFR) in Australia and the management of risks to health from RFR exposure are discussed. The Australian RFR Exposure Standard forms that basis of risk assessment. Risk assessment and control procedures including the health surveillance of workers, other special occupational groups and members of the general public are outlined. (author)

  7. Harmonising and Matching IPR Holders at IP Australia

    OpenAIRE

    T’Mir D. Julius; Gaétan de Rassenfosse

    2014-01-01

    This document describes the methodology developed by the Melbourne Institute to: (i) harmonise holders of intellectual property rights (IPRs) at IP Australia (applications for patent, designs, trademarks and plant breeder’s rights); (ii) match Australian IPRs holders to the Australian business register; (iii) identify the ultimate owners within Australia; and (iv) identify which holders are small and medium size enterprises.

  8. Lessons from the Past: Education and Racism in Australia.

    Science.gov (United States)

    Dunn, Myra

    2001-01-01

    The history of racism in Australia is inextricably linked with prevailing ideologies of rural Australia, supported strongly by educational discourses of deficit and disadvantage. A challenge for the Reconciliation Movement will be to make an effective contribution to the development of anti-racist and non-racist practices in rural schooling.…

  9. Learning from Successful Skills Development Systems: Lessons from Australia

    Science.gov (United States)

    Karmel, Tom

    2014-01-01

    This article describes the main institutional features of Australia's TVET sector, focussing particularly on the qualifications framework, how it relates to the labour market, and the role of industry. It also looks briefly at two current policy challenges for Australia. Seeking lessons for other countries in the Asia Pacific region, it…

  10. Forty Years of Teacher Education in Australia: 1974-2014

    Science.gov (United States)

    Mayer, Diane

    2014-01-01

    In this paper, I analyse the history of teacher education in Australia from 1974 to the current policy moment in which questions are increasingly being asked about the quality of teaching and teacher education. Teacher education is, and has been, a highly scrutinised domain in Australia. Since the 1970s, we have seen more than 100 reviews of…

  11. Implications of climate change for tourism in Australia

    NARCIS (Netherlands)

    Amelung, B.; Nicholls, S.

    2014-01-01

    This study assesses the impacts of projected climate change on Australia's tourism industry. Based on application of the Tourism Climatic Index, it investigates potential changes in climatic attractiveness for Australia's major destinations, and discusses implications for tourist flows and tourism p

  12. 78 FR 58154 - Importation of Litchi Fruit From Australia

    Science.gov (United States)

    2013-09-23

    ... Animal and Plant Health Inspection Service 7 CFR Part 319 RIN 0579-AD56 Importation of Litchi Fruit From Australia AGENCY: Animal and Plant Health Inspection Service, USDA. ACTION: Final rule. SUMMARY: We are... shipments of litchi fruit from Australia into the continental United States, except Florida. As a...

  13. Music Australia and the Trove Transition: Consultation Forum

    OpenAIRE

    Holley, Rose

    2010-01-01

    Stakeholders are invited to comment and provide feedback on discovery services for music in Australia, particularly in relation to the transition of 'Music Australia' service into the newly released 'Trove' search service. The content and discovery service features are explained in detail.

  14. The Evolution of Distance Education in Australia: Past, Present, Future

    Science.gov (United States)

    Reiach, Stephen; Averbeck, Clemens; Cassidy, Virginie

    2012-01-01

    Australia's large size and scattered population made it a prime location for the development of correspondence education in the 1920s, and the country is still in the forefront of distance education. This article is based on an extensive interview with Terry Evans, professor at Deakin University in Australia, who reflects on the history of…

  15. Australia in German Geography Textbooks for Middle Schools

    Science.gov (United States)

    Hamann, Berta

    2007-01-01

    German Geography textbooks are structured using the principle of "Systematic Geography based on a regional example" that is predominant in Germany. Compared to other macroregions such as Europe, North America, Africa, or Asia, however, Australia is presented less frequently in school textbooks. Those textbooks which deal with Australia do not…

  16. Australia's Adoption of Outcomes Based Education: A Critique

    Science.gov (United States)

    Donnelly, Kevin

    2007-01-01

    Australia's adoption of outcomes based education (OBE), sometimes known as Essential Learnings or outcomes and standards based education, has been at the centre of a good deal of public scrutiny and debate. In Western Australia, during 2006, the planned introduction of OBE into years 11 and 12 led to a strident and vocal media campaign, in part,…

  17. A New Era for Research Education in Australia?

    Science.gov (United States)

    Marsh, Helene; Smith, Bradley; King, Max; Evans, Terry

    2012-01-01

    Use of the Australian research assessment exercise, Excellence in Research for Australia (ERA) to influence the policy and practice of research education in Australia will undoubtedly have many consequences, some of them unintended and potentially deleterious. ERA is a retrospective measure of research quality; research education is prospective.…

  18. Reversing the indus basin closure

    OpenAIRE

    2011-01-01

    After independence, a swift and extensive development of Indus river basin has intensified commitment of water resources. During dry period, the indication of over commitment and basin closure are visible. In the beginning 2000s, he river basin water resources were committed to more than 99% without any environmental flows. The paper tries to unfold drivers closing the Indus basin and the scope for change. Defining and implementing water allocation mechanism to ascertain equity, sustainabilit...

  19. Fluid Flow History in Lower Triassic Bulgo Sandstone, Central Sydney Basin, Australia

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The fluid flow history during diagenesis of the Lower Triassic Bulgo sandstone has been investigated through integrated analyses of petrography, stable isotope and fluid inclusion. Combined application of these techniques was intended to constrain the temperature, timing, chemistry and source of pore fluids during diagenetic cementation events in the Lower Triassic Bulgo sandstone. The dlagenesis proceeded in two different flow regimes: early dynamic fluid flow regime and late slow static fluid flow regime. The former was characterized by a slight increase of δ(18O) of pore waters form estimated -15 × 10-3 to -14 × 10-3 with the temperature increasing from ~ 10 ℃ to ~ 75 ℃. During early diagenesis, early clays and pore filling carbonates precipitated from the pore waters. The late slow flow/static fluid regime was characterized by a rapid 18O-enrichment process. δ(18O) of pore waters increased from -14× 10-3 to -5× 10-3 with the temperature increasing from 75 ℃ to 110 ℃. During the late diagenesis, kaolin (generation Ⅲ ), quartz and illite crystallized. Oil migrated to the sandstones of the Bulgo sandstone during quartz cementation.

  20. Acidification and buffering mechanisms in acid sulfate soil wetlands of the Murray-Darling Basin, Australia.

    Science.gov (United States)

    Glover, Fiona; Whitworth, Kerry L; Kappen, Peter; Baldwin, Darren S; Rees, Gavin N; Webb, John A; Silvester, Ewen

    2011-04-01

    The acid generation mechanisms and neutralizing capacities of sulfidic sediments from two inland wetlands have been studied in order to understand the response of these types of systems to drying events. The two systems show vastly different responses to oxidation, with one (Bottle Bend (BB) lagoon) having virtually no acid neutralizing capacity (ANC) and the other (Psyche Bend (PB) lagoon) an ANC that is an order of magnitude greater than the acid generation potential. While BB strongly acidifies during oxidation the free acid generation is less than that expected from the measured proton production and consumption processes, with additional proton consumption attributed to the formation of an acid-anion (chloride) FeIII (oxyhydr)oxide product, similar to akaganéite (Fe(OH)2.7Cl0.3). While such products can partially attenuate the acidification of these systems, resilience to acidification is primarily imparted by sediment ANC. PMID:21375259