Journal articles on the topic 'Quartz Victoria'
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1
Hughes, Martin J., G. Neil Phillips, and Stephen P. Carey. "Giant Placers of the Victorian Gold Province." SEG Discovery, no. 56 (January 1, 2004): 1–18. http://dx.doi.org/10.5382/segnews.2004-56.fea.
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ABSTRACT The Victorian gold province has yielded 2500 tonnes (t) Au, nearly 2 percent of cumulative world gold production, mostly mined between 1851 and 1910. Fifty-five percent (1375 t) was placer gold from modern and paleostream systems, and from eluvial deposits, and the remainder came from primary quartz vein-related deposits. Most of the alluvial gold placers are in unconsolidated or weakly cemented quartz pebble conglomerate and gravel, dominated by hydrothermal quartz, although a few paleoplacers are within duricrusted conglomerate that required crushing. Large and abundant gold nuggets were common. Placer gold deposits formed in three intervals following uplift in the Late Cretaceous, Late Eocene, and Pliocene. An important factor in the preservation of the paleoplacers has been their burial by younger sediments and basalt flows, with consequent protection from erosion and dispersal. Factors in the formation of the giant gold placers of Victoria include the following: (1) the existence of a major primary gold province with several multimillion-ounce gold deposits; (2) uplift and reactivation of older faults; and (3) high rainfall and deep Paleogene weathering.
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Lennox, P. G., and S. D. Golding. "Quartz veining in simply folded arenites, Cape Liptrap, southeast Victoria, Australia." Australian Journal of Earth Sciences 36, no. 2 (June 1989): 243–61. http://dx.doi.org/10.1080/08120098908729484.
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Birch, William D. "Mineralogy of the Silver King deposit, Omeo, Victoria." Proceedings of the Royal Society of Victoria 129, no. 1 (2017): 41. http://dx.doi.org/10.1071/rs17004.
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The Silver King mine (also known as Forsyths) operated very intermittently between about 1911 and the late 1940s on Livingstone Creek, near Omeo, in northeastern Victoria. The deposit consists of six thin and discontinuous quartz lodes that are variably mineralised. Assays of up to 410 ounces of silver per ton were obtained but there are only a few recorded production figures. Examination of representative ore samples shows that the main silver-bearing minerals in the primary ore are pyrargyrite, freibergite, andorite and the rare sulphosalt zoubekite, which occur irregularly with pyrite, arsenopyrite, galena and sphalerite. Phase assemblage data indicate that crystallisation occurred over an interval from about 450°C to less than 250°C, with the silver-bearing minerals crystallising at the lowest temperatures. The lodes were formed by the emplacement of hydrothermal solutions into fractures within the Ensay Shear Zone during the Early Devonian Bindian Orogeny. There are similarities in mineralisation and timing of emplacement between the Silver King lodes and the quartz-reef-hosted Glen Wills and Sunnyside goldfields 35‒40 km north of Omeo.
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Wilson, C. J. L., P. M. Schaubs, and L. D. Leader. "Mineral Precipitation in the Quartz Reefs of the Bendigo Gold Deposit, Victoria, Australia." Economic Geology 108, no. 2 (February 21, 2013): 259–78. http://dx.doi.org/10.2113/econgeo.108.2.259.
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Gabo-Ratio, J. A. S., K. D. Jabagat, O. B. Soberano, K. Yonezu, and Y. H. Lee. "Geochemistry and geochronology of intrusive units in the Suyoc epithermal deposit: Constraints on magma fertility in the Mankayan Mineral District, Philippines." IOP Conference Series: Earth and Environmental Science 1071, no. 1 (August 1, 2022): 012021. http://dx.doi.org/10.1088/1755-1315/1071/1/012021.
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Abstract The Mankayan Mineral District in northern Luzon, Philippines is host to world-class Cu-Au hydrothermal deposits such as the Far Southeast porphyry copper deposit and the Lepanto, Victoria, and Teresa epithermal deposits. It also hosts the Suyoc epithermal prospect in the southern portion of the district. This study focuses on the petrography, whole rock geochemistry, mineral chemistry and U-Pb dating of the three massive batholitic intrusive units (gabbro-diabase basement, tonalite-granodiorite, and hornblende quartz diorite) in Suyoc. U-Pb dating results reveal that the tonalite is Late Eocene in age (37.20 ± 4.70 Ma), while the hornblende quartz diorite was dated 3.18 ± 0.77 Ma (Middle Pliocene). The gabbro-diabase exhibits tholeiitic signature while the tonalite-granodiorite and hornblende quartz diorite are calc-alkaline. Trace element plots for the three host rocks indicate formation in a subduction setting. Furthermore, discrimination diagrams point to an adakitic character for the younger hornblende quartz diorite and typical arc rock signatures for the older gabbro and tonalite-granodiorite. The results indicate that hydrothermal mineralization is attributed to the hornblende quartz diorite, which coincides with the Pliocene mineralization recognized in the Mankayan Mineral District.
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Henry, D. A., R. J. Squire, C. J. L. Wilson, and T. J. Rawling. "Structural and lithological controls on the high-grade Hangingwall Reef quartz – gold veins, Stawell, Victoria." Australian Journal of Earth Sciences 53, no. 5 (October 2006): 759–66. http://dx.doi.org/10.1080/08120090600827439.
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Cook, Y. A. "Precambrian rift-related magmatism and sedimentation, south Victoria Land, Antarctica." Antarctic Science 19, no. 4 (August 16, 2007): 471–84. http://dx.doi.org/10.1017/s0954102007000612.
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AbstractPrecambrian continental extension is described in detail for the first time in the Victoria Land segment of the Transantarctic Mountains and is comparable with plume related intercontinental rifting of the Afar area, Africa. The Baronick Formation comprises igneous-derived conglomerate, marble and volcanic to sub-volcanic igneous layers. Volcanic and carbonate horizons were eroded in a fluvial or marine environment and provided debris for mass flow and slump deposits which formed in a marginal marine basin in the Precambrian. Clasts in these deposits include basalt, trachyte and comendite, and along with the interbedded volcanic layers of basalt, trachyte and quartz syenite, indicate proximity and contemporaneity of volcanic activity. Igneous layers and source rocks for clasts of the Baronick Formation have an enriched MORB chemistry and underwent albitization of calcic feldspar before erosion and conglomerate deposition. The Highway Suite forms a kilometre-scale body of gabbro and dolerite plugs and is interpreted as a slice of transitional continental oceanic crust. The chemistry of all igneous rocks suggests a continental rift environment and the associated sediments are consistent with such a setting. The Baronick Formation was locally intruded by sills of the Highway Suite; however, the main body of the Highway Suite was juxtaposed against the Baronick Formation during greenschist facies shearing before c. 551 Ma.
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Josh, Matthew, Melvyn J. Lintern, Anton W. Kepic, and Mike Verrall. "Impact of grain-coating iron minerals on dielectric response of quartz sand and implications for ground-penetrating radar." GEOPHYSICS 76, no. 5 (September 2011): J27—J34. http://dx.doi.org/10.1190/geo2010-0321.1.
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An unexpected result of ground-penetrating radar (GPR) surveys in the Great Victoria Desert (South Australia) was the lack of returning signal in what appeared to be a favorable environment for GPR, with dry silica sand and calcrete aggregates in the near surface. We found that the dielectric response of the dry sand samples had much higher dielectric losses than comparable sands from Western Australia and that the dielectric losses are controlled by the presence of iron oxide minerals, although iron concentrations themselves are only around 0.4%. The samples contained over 90% quartz, with subsidiary amounts of carbonates, kaolin, and smectite occurring with the iron oxide minerals as a coating on the quartz grains. An acid washing procedure removed the reducible iron oxide minerals from the clay coating but left the clays substantially unaltered. Subsequent dielectric and magnetic analysis of the samples indicates that the iron oxide minerals removed during the washing process are responsible for the reduction of GPR penetration at 250 MHz from approximately 10 m to only 1 m.
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Renna, Maria Rosaria, Massimo Tiepolo, and Riccardo Tribuzio. "In situ U-Pb geochronology of baddeleyite-zircon pairs using laser-ablation ICPMS: the case-study of quartz gabbro from Varney Nunatak (central Victoria Land, Antarctica)." European Journal of Mineralogy 23, no. 2 (May 3, 2011): 223–40. http://dx.doi.org/10.1127/0935-1221/2011/0023-2083.
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EVANS, D. T. W. "The Midas Pond Gold Prospect, Victoria Lake Group, Central Newfoundland: A Mesothermal Quartz Vein System with Epithermal Characteristics." Exploration and Mining Geology 9, no. 1 (January 1, 2000): 65–79. http://dx.doi.org/10.2113/0090065.
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Lipar, Matej, and John Webb. "The Middle–Late Pleistocene Bridgewater Formation on Cape Bridgewater, south-western Victoria: chronostratigraphy and palaeoclimatic significance." Proceedings of the Royal Society of Victoria 127, no. 2 (2015): 81. http://dx.doi.org/10.1071/rs15020.
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The Pleistocene Bridgewater Formation is well exposed at Cape Bridgewater and surrounding areas in south-western Victoria, where field studies, mineralogical and isotopic analyses and OSL dating have shown that it can be divided into three members, here named (in stratigraphic order) the Descartes Bay, Bats Ridge and Duquesne members. Each member consists of aeolian calcarenite deposited as a coastal dune, that was karstified (with solution pipe development) and then overlain by a red or purple palaeosol. The aeolianites were deposited in three distinct phases corresponding to interglacials MIS 11, MIS 9 and MIS 7, respectively, when the shoreline was near present sea level. Karstification occurred as a result of the high effective precipitation characteristic of the transition between interglacial and glacial periods, followed by aeolian dust accession and palaeosol formation during the drier, windier glacial climates. Comparison with the coeval Tamala Limestone in south-western Western Australia shows simultaneous changes in palaeoclimate: high effective precipitation during the transition from MIS 11 to MIS 10, and a relatively dry transition from MIS 9 to MIS 8. Abundant rainfall during MIS 5 caused extensive limestone dissolution (solution pipes in Victoria, pinnacles in Western Australia) and the resulting quartz sand residue was redeposited during MIS 2-4.
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Cox, S. F., S. S. Sun, M. A. Etheridge, V. J. Wall, and T. F. Potter. "Structural and geochemical controls on the development of turbidite-hosted gold quartz vein deposits, Wattle Gully Mine, central Victoria, Australia." Economic Geology 90, no. 6 (October 1, 1995): 1722–46. http://dx.doi.org/10.2113/gsecongeo.90.6.1722.
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Cattle, Stephen R., and Carol M. S. Smith. "Fabric of soil derived from parna and the riddle of transported pellets." Soil Research 56, no. 3 (2018): 219. http://dx.doi.org/10.1071/sr16343.
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It is generally accepted that large areas of southern New South Wales (NSW) and northern Victoria are mantled by soils derived from clayey loess deposits called parna. These parna deposits are believed to have formed during arid phases of the Pleistocene and the mineral constituents are assumed to have been transported as silt- and fine sand-sized pellets of calcareous clay, with some companion quartz grains of a similar size. A common property of parna-derived soils is subplasticity, where the apparent field texture grade becomes more clayey with increasing mechanical working of the bolus. This propensity for subplastic behaviour suggests that parna-derived soils contain stable silt- and fine sand-sized pellets of clay, yet there has been little direct micromorphological evidence of these pellets ever published. In the present study, thin section samples from several parna type-sites in southern NSW were examined micromorphologically to reveal the presence of very well size-sorted quartz grain populations (companion grains) and identifiable prolate clay aggregations of a similar silt to fine sand size. These prolate pellets, comprised of quartz, illite, kaolinite and chlorite, have a very distinctive mosaic-speckled b-fabric and are more widely distributed throughout the soil than the similarly sized and shaped faunal faecal pellets. Where these pelletal aggregations are not evident, such as in the deeper parna deposits, abundant illuviation features suggest that clay particles deposited within the parna, whether as pellets or coatings on grains, have subsequently undergone considerable weathering and a range of pedogenic processes.
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Voisey, Christopher R., David Willis, Andrew G. Tomkins, Christopher J. L. Wilson, Steven Micklethwaite, Filomena Salvemini, Jeremy Bougoure, and William D. A. Rickard. "Aseismic Refinement of Orogenic Gold Systems." Economic Geology 115, no. 1 (January 1, 2020): 33–50. http://dx.doi.org/10.5382/econgeo.4692.
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Abstract Orogenic Au deposits have contributed the majority of Au recovered globally throughout history. However, the mechanism that concentrates Au to extremely high bonanza grades in small domains within these deposits remains enigmatic. The volume of fluid required to provide extreme Au endowments in localized occurrences is not reflected in field observations (e.g., in the extent of quartz veining or hydrothermal alteration). Detailed optical, scanning and transmission electron microscopy, nanoscale secondary ion mass spectrometry, and 3-D neutron tomography have been used to investigate the processes responsible for development of anomalously high grade ore (upward of 3% Au) found in quartz veins at Fosterville gold mine (Victoria, Australia). Distinct textural settings of visible Au include (1) Au concentrated along pressure solution seams associated with wall-rock selvages, (2) as nano- to microscale dusty Au seams parallel to pressure solution seams, and (3) in microscale tension fractures perpendicular to stylolitic seams. The distribution of Au in arsenopyrite and pyrite hosted within pressure solution seams changes as a function of the extent of deformation. Sulfides in highly deformed pressure solution seams exclusively host Au as nano- to micrometer-sized clusters within features associated with corrosion and brittle failure, whereas sulfides in mildly deformed pressure solution seams have Au bound in the crystal structure. It is proposed that Au supersaturation in fluids introduced during seismic periods led to the deposition of abundant Au nanoparticles in quartz-carbonate veins. Subsequent pressure dissolution of vein quartz and carbonate during interseismic intervals allowed for episodic increase in the Au/quartz ratio and permitted liberation and migration of Au nanoparticles, promoting Au grain growth in favorable textural settings. Galvanic corrosion and brittle fracturing of auriferous sulfides during the interseismic period allowed additional remobilization and/or enrichment of sulfide-hosted Au. Repetition of this mechanism over the time scale of deposit formation acted to concentrate Au within the lodes. This Au ore upgrading model, referred to as “aseismic refinement,” provides a new insight for the genesis of ultrarich Au mineralization and, based on textures reported from many Au deposits, may be a globally significant component in the formation of orogenic Au deposits.
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Measday, Danielle, Sarah Babister, and Stuart Mills. "Can Lightning Strike Twice? The Reassembly of the Karnak Fulgurite at Museums Victoria." Biodiversity Information Science and Standards 2 (June 13, 2018): e27043. http://dx.doi.org/10.3897/biss.2.27043.
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In 1959, the longest recorded specimen of fulgurite in Victoria was discovered in the sandhills of Karnak in Western Victoria, Australia. Measuring 1.5 metres in vertical length, the specimen was formed by a discharge of lightning penetrating and fusing the quartz sand along its path. Considering the high number of cloud-to-ground lightning strikes, it has been estimated that up to ten fulgurites may be formed globally per second Pasek and Block 2009. Despite this, fulgurites are a rare find, particularly ones of significant length. The amorphous glass tubes created by lightning discharge are notoriously brittle and thin walled. Unequal contraction of the glass upon cooling produces fine cracks which weather over time, often resulting in the specimen breaking into segments. The Karnak fulgurite was systematically extracted from the ground segment by segment and reassembled for display in the museum, where it remained on exhibition from the early 1960s until 1990 Beasley 1964. When removed from display, the Karnak fulgurite was accidentally fractured into hundreds of pieces. For nearly 30 years it has remained fragmented and spread across multiple vials in the collection. The level of detail provided in field notes, still images and archives from the time of its collection provide a complete record of its appearance prior to the damage. The conservation and mineralogy departments of the museum collaborated on a project to return the fulgurite to its original form. This poster will track the journey of its reassembly, including mapping the original shape and dimensions of the specimen, analysis and removal of aged adhesives, and designing a mounting system for future display and storage.
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Al-Yaseri, Ahmed, Mohammad Sarmadivaleh, Ali Saeedi, Maxim Lebedev, Ahmed Barifcani, and Stefan Iglauer. "N2+CO2+NaCl brine interfacial tensions and contact angles on quartz at CO2 storage site conditions in the Gippsland basin, Victoria/Australia." Journal of Petroleum Science and Engineering 129 (May 2015): 58–62. http://dx.doi.org/10.1016/j.petrol.2015.01.026.
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Craw, D., and Y. A. Cook. "Retrogressive fluids and vein formation during uplift of the Priestley metamorphic complex, north Victoria Land, Antarctica." Antarctic Science 7, no. 3 (September 1995): 283–91. http://dx.doi.org/10.1017/s0954102095000393.
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The poly-deformed Priestley schist (Wilson Terrane) of north Victoria Land, Antarctica ranges in metamorphic grade from lower greenschist facies to upper amphibolite facies. All grades of schist have been affected by structurally controlled retrogressive H2O-CO2 fluids with 45–70 mole % CO2. The fluids have deposited quartz-carbonate veins with pyrite and chlorite or biotite in late stage structures. Veins typically constitute < 1% of the rock mass, but in one greenschist facies area > 10% of the rock is vein. Veins in higher grade schists have been boudinaged after formation, and many have been annealed. Primary fluid inclusions are preserved in veins in biotite zone schists in two localities. At one locality, entrapment of immiscible fluids (water with c. 8 and 45 mole % CO2) occurred during vein formation, at about 280–300°C and 700 ± 200 bars fluid pressure. The aqueous fluid is slightly saline (4 wt % NaCl equivalent). At the other primary fluid inclusion locality, veins were formed from a single phase fluid (c. 70 mole % CO2) at 200–350°C and 1600 ± 500 bars fluid pressure. Both these vein systems are inferred to have formed between 2 and 8 km depth, near the brittle-ductile transition. Retrogressive fluid mobility and vein formation occurred throughout schist in the Priestly metamorphic complex during uplift in the latter part of the Ross Orogeny (c. 490 Ma), following near-isobaric cooling at metamorphic depths.
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Buschette, Michael J., and Stephen J. Piercey. "Hydrothermal alteration and lithogeochemistry of the Boundary volcanogenic massive sulphide deposit, central Newfoundland, Canada." Canadian Journal of Earth Sciences 53, no. 5 (May 2016): 506–27. http://dx.doi.org/10.1139/cjes-2015-0237.
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The Boundary volcanogenic massive sulphide deposit (0.50 Mt at 3.5% Cu, 4.0% Zn, and 1.0% Pb, 34 g/t Ag) is hosted by the Tally Pond group (∼510 Ma), Victoria Lake supergroup, central Newfoundland, Canada, and represents a subseafloor replacement-style massive sulphide deposit. The deposit is hosted by rhyolitic lapilli tuff of the Bindons Pond formation. The rhyolites have immobile element signatures consistent with the formation of felsic rocks through the melting of juvenile-weakly evolved crust within an extensional rift environment (rifted peri-continental arc). The host rocks of the Boundary deposit contain elevated alteration indices, including high Ba/Sr, Hg/Na2O, chlorite–carbonate–pyrite index, and Ishikawa alteration index values. The mobile element geochemistry effectively differentiates between three distinct hydrothermal alteration styles: intense chlorite, chlorite-sericite, and quartz-sericite. Intense chlorite alteration exhibits mass gains in MgO and Cu and depletions in K2O and Ba. Chlorite-sericite alteration contains variable gains and losses of SiO2, K2O, Ba, MgO, and Fe2O3 depending on the dominant matrix mineral phase (i.e., chlorite vs. sericite). The quartz-sericite assemblage has mass gains in SiO2, K2O, Ba, and Fe2O3. Short-wave infrared spectroscopic data, particularly AlOH and FeOH absorption hulls, differentiate alteration styles and correlate with lithogeochemical results: AlOH absorption features increase in length (>2208 nm) proximal to Zn mineralization and wavelength variations correspond to relative abundances of sericite and chlorite. Electron probe microanalyses indicate that increasing short-wave infrared wavelengths correlate with increasing Mg–Fe and Fe contents in sericite and chlorite, respectively. Collectively, these data have been used to develop a three-dimensional alteration model of the Boundary deposit.
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Elliott, Christine. "Influence of temperature and moisture availability on physical rock weathering along the Victoria Land coast, Antarctica." Antarctic Science 20, no. 1 (October 15, 2007): 61–67. http://dx.doi.org/10.1017/s0954102007000685.
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AbstractRock weathering plays an important role in soil development. A better understanding of how different temperature and moisture regimes impact on the rates of rock breakdown can thus contribute to our knowledge of how rates of soil production might be affected by changes in climate. Laboratory simulations using two temperature cycles determined from field data and three moisture levels were carried out on samples of granite from three locations along the Victoria Land coast. Estimates of weathering rate from these experiments were of the same order of magnitude as some other more field based studies undertaken in similar environments. However, actual values for samples from the three locations varied depending on the specific characteristics of the rock, especially grain size, porosity and extent of micro-cracking. Moisture availability was found to be an important factor in determining weight loss in the samples from Gneiss Point but not in those from Terra Nova Bay or Teall Island with the moderate level of moisture application having the greatest impact. Spring/autumn temperature cycles had a different effect on the breakdown of the rock samples compared to summer cycles but the magnitude of the effect was dependent on moisture level and rock characteristics, especially quartz content and the ability to absorb heat and moisture. The samples of rock from Terra Nova Bay and Gneiss Point where no moisture had been applied had significantly higher rates of breakdown under spring/autumn cycles than summer ones. However, this effect was reversed in the Gneiss Point samples after moisture was added. A future climate scenario using the weathering rates found in this research where there was, for example, a 10% increase in summer temperature cycles and a corresponding decrease in spring/autumn cycles predicted that a reduction in weathering would occur in conditions of little or no precipitation at Terra Nova Bay and Gneiss Point but there would be limited effect under higher levels of moisture.
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Jia, Y. "A Fluid Inclusion Study of Au-Bearing Quartz Vein Systems in the Central and North Deborah Deposits of the Bendigo Gold Field, Central Victoria, Australia." Economic Geology 95, no. 3 (May 1, 2000): 467–94. http://dx.doi.org/10.2113/95.3.467.
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Sibson, R. H., and J. Scott. "Stress/fault controls on the containment and release of overpressured fluids: Examples from gold-quartz vein systems in Juneau, Alaska; Victoria, Australia and Otago, New Zealand." Ore Geology Reviews 13, no. 1-5 (April 1998): 293–306. http://dx.doi.org/10.1016/s0169-1368(97)00023-1.
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Birch, William D., Allan Pring, D. J. M. Bevan, and Kharisun. "Wycheproofite: a new hydrated sodium aluminium zirconium phosphate from Wycheproof, Victoria, Australia, and a new occurrence of kosnarite." Mineralogical Magazine 58, no. 393 (December 1994): 635–39. http://dx.doi.org/10.1180/minmag.1994.058.393.13.
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AbstractWycheproofite is a new hydrated sodium aluminium zirconium phosphate from a pegmatite vein in granite at Wycheproof, in northwestern Victoria, Australia. The mineral occurs as compact, finely fibrous masses in small cavities in the quartz/feldspar/muscovite/schorl-bearing pegmatite. The fibrous crystals are between 5 and 10 µm wide and up to several mm long. Accompanying minerals include two other zirconium phosphates — kosnarite and a new species, selwynite, the K-analogue of gainesite — as well as wardite, eosphorite, cyrilovite, leucophosphitc, rockbridgeite, a kidwellite-like mineral and saleeite. The wycheproofite aggregates are pale pinkish to brownish orange, with a vitreous to pearly lustre. The streak is colourless, fracture rough, cleavage not observed and the Mohs hardness is between 4 and 5. Optical data are incomplete due to the fibrous nature of the mineral; the indices of refraction are in the range 1.62–1.64. The measured density is 2.83 g cm−3. Chemical analysis gave (wt.%) Na2O 6.36, K2O 0.44, CaO 0.66, FeO 0.36, MnO 0.21, Al2O3 12.03, Cs2O 0.03, ZrO2 32.43, HfO2 1.24, P2O5 35.85, SiO2 0.23, F 0.34, H2O 9.0, less 0=F 0.14, Total 99.04. The simplified formula is NaAlZr(PO4)2(OH)2·H2O. Wycheproofite is triclinic with unit cell parameters a=10.926(5) Å, b = 10.986(5) Å, c = 12.479(9) Å, α= 71.37(4)°, β = 77.39(4)°, γ= 87.54(3)° V = 1375.9 Å3. For Z= 6, the calculated density is 2.81 g cm-3. The strongest lines in the X-ray powder diffraction pattern are [dobs (Å), Iobs,hkl] 2.603 (100) 040; 4.128 (80) 121; 3.711 (65) 023; 3.465 (60) 030; 8.865 (40) 101; 3.243 (35) 132. The crystal structure has not been solved due to the finely fibrous nature of the material available. The name is for the locality, which in the local Australian Aboriginal language means ‘witchie bushes growing on a hilltop’.Data on the third occurrence of kosnarite, KZr2(PO4)3, at Wycheproof are also given.
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Brook, Edward J., Mark D. Kurz, Robert P. Ackert, George H. Denton, Erik T. Brown, Grant M. Raisbeck, and Francoise Yiou. "Chronology of Taylor Glacier Advances in Arena Valley, Antarctica, Using in Situ Cosmogenic 3He and 10Be." Quaternary Research 39, no. 1 (January 1993): 11–23. http://dx.doi.org/10.1006/qres.1993.1002.
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AbstractIn situ produced cosmogenic nuclides provide a new technique for constraining exposure ages of glacial deposits. In situ3He and 10Be in quartz sandstone boulders from Arena Valley, southern Victoria Land, Antarctica, provide chronological constraints for a sequence of moraines ("Taylor II-IVb" moraines) related to expansions of Taylor Glacier and the East Antarctic Ice Sheet. Mean 3He ages are 113,000 ± 45,000 yr, 208,000 ± 67,000 yr, 335,000 ± 187,000 yr, and 1.2 ± 0.2 myr, for Taylor II,III,IVa, and IVb moraines, respectively (mean ± 1σ). Corresponding mean 10Be ages for Taylor II and IVb moraines are 117,000 ± 51,000 yr and 2.1 ± 0.1 myr. For the older deposits the 3He ages are probably lower limits due to diffusive loss. Although the exposure ages appear consistent with the few previous age estimates, particularly with an isotope stage 5 age for Taylor II, each moraine exhibits a broad age distribution. The distribution probably results from a variety of factors, which may include prior exposure to cosmic rays, 3He loss, erosion, postdepositional boulder movement, and radiogenic production of 3He. Nonetheless, the exposure ages provide direct chronological constraints for the moraine sequence, and suggest a maximum thickening of Taylor Glacier relative to the present ice surface of ∼500 m since the late Pliocene-early Pleistocene.
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Mykhailov, V., and А. Tots. "A NEW GOLD ORE REGION IN TANZANIA." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 3 (82) (2018): 55–59. http://dx.doi.org/10.17721/1728-2713.82.07.
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Tanzania is one of the leading gold mining countries in the world and the discovery of new gold resources on its territory is an actual task. Known gold deposits are concentrated mainly in the northwest of the country, in the metallogenic zone of Lake Victoria, where they are associated with the Archean greenstone belts, and to a lesser extent – in the southwest, in the ore regions of Lupa and Mpanda, confined to the Ubendian Paleoproterozoic mobile belt. With regard to the eastern regions of Tanzania, where the Proterozoic structures of the Uzagaran mobile belt are developed, until recently in this region any significant manifestations of gold mineralization were not known. As a result of our research in the northern part of the Morogoro province of the Republic of Tanzania, a new previously unknown gold deposit Mananila was discovered. It is represented by a large volume, up to 400–450 m long, up to 60–80 m thick, mineralized shear zone over intensely leached and schistosed migmatites, gneisses, amphibolites, penetrated by echelon systems of quartz veins and veinlet, steeply dipping bodies of quartz breccia up to 1.0–1.5 m thick. Gold contents range from 0.61 to 8.11 g/t, the average zone content is 2.5–3.0 g/t. Parallel to the main zone, similar structures are developed on the site, although they are of lower thickness. The forecast resources of the deposit are estimated at 20 tons of gold. 2.8 km to the east from the Mananila field, the recently discovered Mazizi gold deposit is located, and a number of small occurrences of gold are also known in the region. All these objects are located within a large shear zone of the northeastern strike, up to 4–5 km width, over 20 km in length. This serves as the basis for the identification of a new gold ore region in the northern part of the Morogoro province of the United Republic of Tanzania, within the Proterozoic mobile belt of Usagaran, the possible gold content of which has never been previously discussed in geological literature.
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Wilkins, Colin, and Mike Quayle. "Structural Control of High-Grade Gold Shoots at the Reward Mine, Hill End, New South Wales, Australia." Economic Geology 116, no. 4 (June 1, 2021): 909–35. http://dx.doi.org/10.5382/econgeo.4807.
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Abstract The Reward mine at Hill End hosts structurally controlled orogenic gold mineralization in moderately S plunging, high-grade gold shoots located at the intersection between a late, steeply W dipping reverse fault zone and E-dipping, bedding-parallel, laminated quartz veins (the Paxton’s vein system). The mineralized bedding-parallel veins are contained within the middle Silurian to Middle Devonian age, turbidite-dominated Hill End trough forming part of the Lachlan orogen in New South Wales. The Hill End trough was deformed in the Middle Devonian (Tabberabberan orogeny), forming tight, N-S–trending, macroscopic D2 folds (Hill End anticline) with S2 slaty cleavage and associated bedding-parallel veins. Structural analysis indicates that the D2 flexural-slip folding mechanism formed bedding-parallel movement zones that contained flexural-slip duplexes, bedding-parallel veins, and saddle reefs in the fold hinges. Bedding-parallel veins are concentrated in weak, narrow shale beds between competent sandstones with dip angles up to 70° indicating that the flexural slip along bedding occurred on unfavorably oriented planes until fold lockup. Gold was precipitated during folding, with fluid-flow concentrated along bedding, as fold limbs rotated, and hosted by bedding-parallel veins and associated structures. However, the gold is sporadically developed, often with subeconomic grades, and is associated with quartz, muscovite, chlorite, carbonates, pyrrhotite, and pyrite. East-west shortening of the Hill End trough resumed during the Late Devonian to early Carboniferous (Kanimblan orogeny), producing a series of steeply W dipping reverse faults that crosscut the eastern limb of the Hill End anticline. Where W-dipping reverse faults intersected major E-dipping bedding-parallel veins, gold (now associated with galena and sphalerite) was precipitated in a network of brittle fractures contained within the veins, forming moderately S plunging, high-grade gold shoots. Only where major bedding-parallel veins were intersected, displaced, and fractured by late W-dipping reverse faults is there a potential for localization of high-grade gold shoots (>10 g/t). A revised structural history for the Hill End area not only explains the location of gold shoots in the Reward mine but allows previous geochemical, dating, and isotope studies to be better understood, with the discordant W-dipping reverse faults likely acting as feeder structures introducing gold-bearing fluids sourced within deeply buried Ordovician volcanic units below the Hill End trough. A comparison is made between gold mineralization, structural style, and timing at Hill End in the eastern Lachlan orogen with the gold deposits of Victoria, in the western Lachlan orogen. Structural styles are similar where gold mineralization is formed during folding and reverse faulting during periods of regional east-west shortening. However, at Hill End, flexural-slip folding-related weakly mineralized bedding-parallel veins are reactivated to a lesser degree once folds lock up (cf. the Bendigo zone deposits in Victoria) due to the earlier effects of fold-related flattening and boudinage. The second stage of gold mineralization was formed by an array of crosscutting, steeply W dipping reverse faults fracturing preexisting bedding-parallel veins that developed high-grade gold shoots. Deformation and gold mineralization in the western Lachlan orogen started in the Late Ordovician to middle Silurian Benambran orogeny and continued with more deposits forming in the Bindian (Early Devonian) and Tabberabberan (late Early-Middle Devonian) orogenies. This differs from the Hill End trough in the eastern Lachlan orogen, where deformation and mineralization started in the Tabberabberan orogeny and culminated with the formation of high-grade gold shoots at Hill End during renewed compression in the early Carboniferous Kanimblan orogeny.
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Briner, Jason P., Caleb K. Walcott, Joerg M. Schaefer, Nicolás E. Young, Joseph A. MacGregor, Kristin Poinar, Benjamin A. Keisling, et al. "Drill-site selection for cosmogenic-nuclide exposure dating of the bed of the Greenland Ice Sheet." Cryosphere 16, no. 10 (October 4, 2022): 3933–48. http://dx.doi.org/10.5194/tc-16-3933-2022.
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Abstract. Direct observations of the size of the Greenland Ice Sheet during Quaternary interglaciations are sparse yet valuable for testing numerical models of ice-sheet history and sea level contribution. Recent measurements of cosmogenic nuclides in bedrock from beneath the Greenland Ice Sheet collected during past deep-drilling campaigns reveal that the ice sheet was significantly smaller, and perhaps largely absent, sometime during the past 1.1 million years. These discoveries from decades-old basal samples motivate new, targeted sampling for cosmogenic-nuclide analysis beneath the ice sheet. Current drills available for retrieving bed material from the US Ice Drilling Program require < 700 m ice thickness and a frozen bed, while quartz-bearing bedrock lithologies are required for measuring a large suite of cosmogenic nuclides. We find that these and other requirements yield only ∼ 3.4 % of the Greenland Ice Sheet bed as a suitable drilling target using presently available technology. Additional factors related to scientific questions of interest are the following: which areas of the present ice sheet are the most sensitive to warming, where would a retreating ice sheet expose bare ground rather than leave a remnant ice cap, and which areas are most likely to remain frozen bedded throughout glacial cycles and thus best preserve cosmogenic nuclides? Here we identify locations beneath the Greenland Ice Sheet that are best suited for potential future drilling and analysis. These include sites bordering Inglefield Land in northwestern Greenland, near Victoria Fjord and Mylius-Erichsen Land in northern Greenland, and inland from the alpine topography along the ice margin in eastern and northeastern Greenland. Results from cosmogenic-nuclide analysis in new sub-ice bedrock cores from these areas would help to constrain dimensions of the Greenland Ice Sheet in the past.
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Birch, W. D., E. A. J. Burke, V. J. Wall, and M. A. Etheridge. "Ecandrewsite, the zinc analogue of ilmenite, from Little Broken Hill, New South Wales, Australia, and the San Valentin Mine, Sierra de Cartegena, Spain." Mineralogical Magazine 52, no. 365 (April 1988): 237–40. http://dx.doi.org/10.1180/minmag.1988.052.365.10.
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AbstractEcandrewsite, the zinc analogue of ilmenite, is a new mineral which was first described from the Broken Hill lode in 1970 and discovered subsequently in ores from Little Broken Hill (New South Wales) and the San Valentin Mine, Spain. The name ‘ecandrewsite’ was used in a partial description of the mineral in ‘Minerals of Broken Hill’ (1982), thereby establishing the Little Broken Hill locality, specifically the Melbourne Rockwell Mine, as the type locality. Microprobe analysis of ecandrewsite from the type locality gave ZnO 30.42 (wt.%), FeO (total Fe) 11.37, MnO 7.64, TiO2 50.12, total 99.6%, yielding an empirical formula of (Zn0.59Fe0.24Mn0.17)1.00Ti0.99O3 based on 3 oxygen atoms. All compositions from Little Broken Hill and the San Valentin Mine are ferroan manganoan ecandrewsite. The strongest lines in the X-ray powder diffraction data are (d in Å, (hkil), I/Io):2.746, (104), 100; 2.545, (110), 80; 1.867, (024), 40; 3.734, (012), 30; 1.470, (3030), 30; 1.723, (116), 25. Ecandrewsite is hexagonal, space group RR3¯ assigned from a structural study, with a = 5.090(1), c = 14.036(2)Å, V = 314.6(3)Å3, Z = 6, D(calc.) = 4.99. The mineral is opaque, dark brown to black with a similar streak, and a submetallic lustre. In plane polarized light the reflection colour is greyish white with a pinkish tinge. Reflection pleochroism is weak, but anisotropism is strong with colours from greenish grey to dark brownish grey. Reflectance data in air between 470 and 650 nm are given. At the type locality, ecandrewsite forms disseminated tabular euhedral grains up to 250 × 50 µm, in quartz-rich metasediments. Associated minerals include almandine-spessartine, ferroan gahnite and rutile. The name is for E. C. Andrews, pioneering geologist in the Broken Hill region of New South Wales. Type material consisting of one grain is preserved in the Museum of Victoria (M35700). The mineral and name were approved by the IMA Commission on New Minerals and Mineral Names in 1979.
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JIA, YIEFEI, XIA LI, and ROBERT KERRICH. "Stable Isotope (O, H, S, C, and N) Systematics of Quartz Vein Systems in the Turbidite-Hosted Central and North Deborah Gold Deposits of the Bendigo Gold Field, Central Victoria, Australia: Constraints on the Origin of Ore-Forming Fluids." Economic Geology 96, no. 4 (July 2001): 705–21. http://dx.doi.org/10.2113/gsecongeo.96.4.705.
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JIA, Y. "Stable Isotope (O, H, S, C, and N) Systematics of Quartz Vein Systems in the Turbidite-Hosted Central and North Deborah Gold Deposits of the Bendigo Gold Field, Central Victoria, Australia: Constraints on the Origin of Ore-Forming Fluids." Economic Geology 96, no. 4 (July 1, 2001): 705–21. http://dx.doi.org/10.2113/96.4.705.
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Darragh, Thomas A. "George Ulrich’s contributions in German on Victorian geology, mining and mineralogy (1859–1864)." Proceedings of the Royal Society of Victoria 134, no. 1 (September 5, 2022): 7–44. http://dx.doi.org/10.1071/rs22001.
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Translations of four German publications on Victorian geology, mining and mineralogy by George Ulrich are provided. The hitherto unknown 1859 publication is the earliest detailed account of central Victorian geology and includes descriptions of the techniques for separating gold from quartz and comments on the loss of gold in the tailings and the inefficient mining practices of the time. Ulrich also discussed theories on the origin of auriferous quartz reefs and recorded 19 minerals occurring in the quartz reefs, as well as 14 in basalts with detailed descriptions of many of the minerals. The other three publications continue the geological and mineralogical topics raised in the first with new information gathered since the time of its publication.
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Hunter, Nicholas J. R., Christopher R. Voisey, Andrew G. Tomkins, Christopher J. L. Wilson, Vladimir Luzin, and Natasha R. Stephen. "Deformation Mechanisms in Orogenic Gold Systems During Aseismic Periods: Microstructural Evidence from the Central Victorian Gold Deposits, Southeast Australia." Economic Geology 116, no. 8 (December 1, 2021): 1849–64. http://dx.doi.org/10.5382/econgeo.4885.
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Abstract In many orogenic gold deposits, gold is located in quartz veins. Understanding vein development at the microstructural scale may therefore provide insights into processes influencing the distribution of gold, its morphology, and its relationship to faulting. We present evidence that deformation processes during aseismic periods produce characteristic quartz microstructures and crystallographic preferred orientations, which are observed across multiple deposits and orogenic events. Quartz veins comprise a matrix of coarse, subidiomorphic, and columnar grains overprinted by finer-grained quartz seams subparallel to the fault trace, which suggests an initial stage of cataclastic deformation. The fine-grained quartz domains are characterized by well-oriented quartz c-axis clusters and girdles oriented parallel to the maximum extension direction, which reveals that fluid-enhanced pressure solution occurred subsequent to grain refinement. Coarser anhedral gold is associated with primary quartz, whereas fine-grained, “dusty” gold trails are found within the fine-grained quartz seams, revealing a link between aseismic deformation and gold morphology. These distinct quartz and gold morphologies, observed at both micro- and macroscale, suggest that both seismic fault-valving and aseismic deformation processes are both important controls on gold distribution.
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Prado, Ricardo, and Lisandra Ogg Gomes. "Entrevista: Maria Victoria de Mesquita Benevides: “Não existe nenhuma escola sem partido”." Veras 8, no. 2 (February 14, 2019): 108. http://dx.doi.org/10.14212/veras.vol8.n2.ano2018.art334.
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Educação, política e direitos humanos sempre se entrelaçam na vida acadêmica da socióloga Maria Victoria de Mesquita Benevides, professora-titular aposentada da Faculdade de Educação da Universidade de São Paulo (USP), onde lecionou Sociologia e orientou teses de mestrado e doutorado na cátedra de Direitos Humanos. E foi com preocupação quanto ao encontro da política com os direitos humanos, e sob o impacto da indicação ocorrida na véspera de Ricardo Vélez-Rodriguez, um egresso da Escola de Comando e Estado-Maior do Exército, para o Ministério da Educação do governo que tomará posse em janeiro de 2019, que ela recebeu a revista Veras para uma entrevista. Nela, que segue transcrita abaixo, a professora abordou o movimento escola sem partido, um nome que para ela é “uma contradição em termos”, e a perspectiva de uma “lei da mordaça” que possa ameaçar, de forma velada ou explícita, o que ela considera a outra face da educação, tão imprescindível quanto a transmissão de conhecimentos: a educação para a cidadania, aquela “que vai preparar a criança, e depois o adolescente, a participar no futuro mais ativamente da política, nas eleições e nos processos decisórios da sociedade”.
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Beaudet, Gilles. "L’action pastorale du Frère Marie-Victorin au Collège de Longueuil (1904-1929)." Sessions d'étude - Société canadienne d'histoire de l'Église catholique 51 (January 12, 2012): 67–79. http://dx.doi.org/10.7202/1007452ar.
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Au Collège de Longueuil, le Frère Marie-Victorin fonde, en 1906, un cercle littéraire dans le but « d’arracher les âmes à la vulgarité où elles semblent engluées ». Affilié à l’ACJC peu après, le cercle voit une section des Anciens s’ajouter à la section Collégiale, le tout regroupant environ 75 membres. Des initiatives variées appellent les jeunes à s’impliquer, au profit matériel et spirituel de leurs semblables. L’une des plus remarquables, même si les circonstances n’ont pas permis de la mener à terme, c’est le projet d’une maison de famille. Vers 1930, après un quart de siècle d’activités, le Frère Marie-Victorin avait tenu près de mille réunions, il avait rejoint plus de 500 jeunes dans une relation personnelle. Son engagement progressif et accaparant dans la carrière scientifique l’empêcha de poursuivre cette forme spécifique d’apostolat qui lui avait tenu si fort à coeur : « La seule chose qui m’attache à la vie présentement, c’est le cercle des Anciens », notait-il en 1911. L’article montre comment s’est concrétisé cet attachement.
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Brito, Giovani Greigh de, Ervandil Corrêa Costa, Heleno Maziero, Andréia Bordini de Brito, and Felipe Augusto Dörr. "Preferência da broca-das-cucurbitáceas [Diaphania nitidalis Cramer, 1782 (Lepidoptera: Pyralidae)] por cultivares de pepineiro em ambiente protegido." Ciência Rural 34, no. 2 (April 2004): 577–79. http://dx.doi.org/10.1590/s0103-84782004000200038.
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A broca-das-cucurbitáceas (Diaphania nitidalis) é uma praga de grande importância em diversas culturas, principalmente do pepineiro. Esta espécie pode apresentar preferência em relação a determinadas cultivares quanto à sua alimentação e até mesmo oviposição. Nesse sentido, o presente estudo objetivou avaliar a ocorrência desta praga em frutos de seis cultivares de pepineiro, em ambiente protegido. As cultivares Patton, Victoria, Premier, Vlaspik e Napoleon apresentaram, respectivamente, 50%, 43,75%, 37,50%, 34,37% e 25,87% dos frutos brocados. A cultivar Marinda apresentou resultado promissor, com apenas 10,37% dos frutos com presença de larvas de D. nitidalis.
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Atienzo, Daniela Rebeca Campos, and Maria Carolina De Godoy. "Mulheres e literatura: vozes de reconhecimento, transgressão e identidade." Letrônica 13, no. 1 (April 8, 2020): 34935. http://dx.doi.org/10.15448/1984-4301.2020.1.34935.
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O interesse deste artigo é tratar de vozes de escritoras negras que representam sua condição tanto no plano individual quanto coletivo. Para tanto, a proposta é estudar a poesia da brasileira contemporânea Cristiane Sobral e o poema “Me gritaron Negra”, da peruana Victoria Santa Cruz (1923-2014), a fim de compará-las quanto ao modo de reconhecerem-se negras e às suas afirmações identitárias no campo literário, por meio da representação de múltiplas vozes e as raízes ancestrais. Para a discussão teórica e crítica, centraremos em Deleuze (1977), Bernd (1988), Spivak (1988); e Hall (2005). É importante ressaltar como a identidade é construída a partir do olhar do Outro em debate com o próprio sistema de pensamento, por conseguinte constataremos como as conexões que se estabelecem entre as múltiplas vozes presentes nos poemas reafirmam suas raízes ancestrais e de “identificação” vistas como “um processo em andamento” (HALL, 2006), e não como uma obra acabada e fixa.
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Moens, Robin. "Bouvines : victoire du roi ou victoire du Roye ? Les querelles factionnaires à la cour de France dans le premier quart du XIIIe siècle." Revue du Nord 437, no. 4 (March 12, 2021): 701–22. http://dx.doi.org/10.3917/rdn.437.0701.
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Duncan, Maria Teresa. "Obtenção de dados normativos para desempenho no teste de Stroop num grupo de estudantes do ensino fundamental em Niterói." Jornal Brasileiro de Psiquiatria 55, no. 1 (2006): 42–48. http://dx.doi.org/10.1590/s0047-20852006000100006.
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OBJETIVO: Os objetivos deste trabalho foram realizar um estudo de normatização para o teste de Stroop numa amostra brasileira, tradicionalmente aceita como medida de atenção seletiva e flexibilidade mental, usando como referência a versão Victoria do teste, bem como analisar diferenças no desempenho de estudantes de escolas das redes pública e particular, e também investigar diferenças quanto ao sexo, além de observar se aumento de idade e anos de escolaridade favorecem um melhor desempenho no teste. MÉTODOS: Cento e trinta e dois estudantes de duas escolas (uma particular e outra pública), na faixa etária de 12 a 14 anos, alunos da 6ªà8ªsérie do ensino fundamental, participaram da pesquisa após levantamento do rendimento escolar e entrevista inicial. RESULTADOS: Aanálise estatística dos resultados revelou que os alunos da escola pública tiveram um desempenho significativamente pior em relação aos da particular. Quanto à variável sexo, os resultados não foram significativos e, em relação à idade, o resultado não foi consistente, revelando que essa variável perde a significância quando analisada à luz das seis medidas dependentes do experimento. CONCLUSÕES: Os resultados sugerem a influência das diferentes condições socioeconômicas, educacionais e culturais a que estão expostos os alunos das duas escolas como uma possível explicação para as diferenças observadas no desempenho no teste.
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KNIGHT, DAVID. "SCIENCE AND CULTURE IN MID-VICTORIAN BRITAIN: THE REVIEWS, AND WILLIAM CROOKES' QUARTERLY JOURNAL OF SCIENCE." Nuncius 11, no. 1 (1996): 43–54. http://dx.doi.org/10.1163/182539196x00817.
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Abstracttitle RIASSUNTO /title L'Origine delleSpecie, che Charles Darwin pubblic nel 1859, sovente considerata come l'opera che segn un punto di svolta nel conflitto tra sapere scientifico e religione. Recenti studi, specialmente sul ruolo giocato nella vicenda da T. H. Huxley, il bulldog di Darwin, sottolineano invece (o meglio, al pari) l'intenzione di Huxley di escludere soprattutto appassionati e dilettanti da un ambito di ricerca che si stava trasformando in un settore per esperti. Per quanto le riviste del periodo contenessero soltanto un 10% di articoli scientifici, la domanda nei confronti di informazioni non specialistiche era in diminuzione; scienza e discipline umanistiche si stavano difatti trasformando in ci che C. P. Snow avrebbe poi definito le due culture.
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Lupton, Deborah. ""Desenvolvendo-me por inteiro": cidadania, neoliberalismo e saúde contemporânea no currículo de Educação Física." Movimento (ESEFID/UFRGS) 9, no. 3 (December 26, 2007): 11–31. http://dx.doi.org/10.22456/1982-8918.2816.
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Recentemente, em vários estados australianos, os campos de educação em saúde e educação física têm sido articulados nas escolas em uma única área de ensino. Este artigo identifica discursos a respeito de saúde que se evidenciam no contexto de um currículo contemporâneo de educação física em saúde, especificamente aquele que está sendo aplicado nas escolas australianas do Estado de Victoria. Por intermédio da análise do currículo e de narrativas de professores a respeito dos princípios curriculares, e de suas experiências em implementá-los, fica demonstrado que atualmente são predominantes noções particulares de saúde relacionadas aos ideais neoliberais de cidadania, hdlismo e identidade pessoal. Há uma forte evidência da influência dos pressupostos da "nova saúde pública" e de idéias a respeito da importância do controle emocional e da auto-estima, tanto no currículo quanto nos relatos dos professores. No entanto, argumenta-se que, ao mesmo tempo em que os ideais dominantes do currículo são geralmente aceitos pelos professores, há também evidências de resistência, intencionais ou não, a estes mesmos ideais no âmbito escolar.
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Hernandez, José Guadalupe Vargas, and Jesús Iván Gonzáles Otiveros. "Municipal urban wasteto-energy business model in Mexico: a study of three companies." Bahia Análise & Dados 28, no. 2 (December 31, 2018): 272–91. http://dx.doi.org/10.56839/bd.v28i2.12.
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O principal objetivo desta pesquisa é identificar os aspectos centrais de três empresas de geração de energia, a partir do biogás produzido em aterros sanitários, em três cidades do país: “Benlesa” em Salinas Victoria, Nuevo León; “Ylem Energy Limited” em Aguascalientes, Aguascalientes; e “Biogás Juárez” em Ciudad Juárez, Chihuahua. A análise dessas empresas e do seu modo de operação e ambiente de negócios permite identificar oportunidades de comercialização nesta área. Conclui-se que existe um grande potencial de mercado inexplorado, que trabalha através de mecanismos e alianças estratégicas com entidades públicas, como uma opção mais viável para reduzir o risco de investimentos e viabilizar projetos. O uso de tecnologias de ponta, a composição dos resíduos urbanos e a infraestrutura disponível são fatores-chave na produção de bioenergia. O estudo dessas três empresas em operação permite a identificação de fatores que podem auxiliar na implementação de mais iniciativas de geração de energia a partir de resíduos sólidos urbanos, em mais áreas do país que sejam bem-sucedidas e lucrativas, tanto para o capital privado quanto para o interesse social. Palavras-chave: Biogás. Bioenergia. Aterro sanitário. Resíduo-energia. Negócio.
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Stuart, John, and Ian Welch. "William Henry Fitchett: Methodist, Englishman, Australian, Imperialist." Social Sciences and Missions 21, no. 1 (2008): 57–72. http://dx.doi.org/10.1163/187489408x308037.
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AbstractHistorians of colonial Australia have long been fascinated by the effects of religious change on urban New South Wales and Victoria in the last quarter of the nineteenth century. This period, it is generally acknowledged, was one of evangelical revival amongst Anglicans and nonconformists alike. Well known (and sometimes world-renowned) evangelists from Great Britain and the United States invariably included cities such as Sydney and Melbourne on their international itineraries. But the local evangelical presence was strong; and this article focuses on William Henry Fitchett, a Melbourne-based evangelical Methodist clergyman who has largely escaped the attention of historians of religion. The reason he has done so is because he achieved fame in a rather different field: as a popular author of imperial histories and biographies. His published works sold in the hundreds of thousands. Yet he also wrote many serious works on religious matters. This article places Fitchett in the context of evangelical mission and revival within and beyond Australia, while also paying due attention to the influence of religion on his writing career. Les historiens de l'Australie coloniale ont longtemps été fascinés par les effets des transformations religieuses dans le monde urbain de New South Wales et Victoria durant le dernier quart du 19e siècle. Cette période est généralement considérée comme ayant été celle d'un Réveil évangélique parmi les Anglicans et les non-conformistes. Des évangélistes connus (et parfois mondialement connus) venus de Grande Bretagne et des Etats-Unis incluaient invariablement dans leurs périples internationaux des villes comme Sydney et Melbourne. Mais la présence évangélique locale était aussi forte, et cet article se concentre sur un pasteur de l'Eglise Méthodiste évangélique basé à Melbourne, William Henry Fitchett, qui a largement échappé à l'attention des historiens de la religion. La raison en est qu'il s'est rendu célèbre dans un domaine autre que religieux, à savoir comme auteur populaire d'histoires et biographies impériales. Les travaux qu'il a publiés se sont vendus par centaines de milliers d'exemplaires, mais il a aussi écrit des œuvres sérieuses sur des questions de religion. Le présent article replace Fitchett dans le contexte de la mission évangélique et du Réveil en Australie et au-delà, tout en se penchant sur la question de l'influence de la religion sur sa carrière d'auteur.
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Dal Ri, Neusa Maria. "Editorial." Revista ORG & DEMO 20, no. 1 (June 28, 2019): 5–6. http://dx.doi.org/10.36311/1519-0110.2019.v20n1.01.p5.
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Apresentamos aos leitores e às leitoras o número 1, do volume 20 de ORG&DEMO relativo ao ano de 2019, que está composto por seis artigos. O primeiro artigo apresentado denomina-se Régimen de trabajo y participación en los procesos de recuperación de empresas en Argentina en el nuevo siglo e foi escrito por María Victoria Deux Marzi da Universidad Nacional de Rosario, Argentina. O segundo artigo é intitulado Agronegócio e agratóxico: uma parceria para o (in)sucesso da produção de alimentos e foi elaborado por Raimunda Áurea Dias de Sousa e Luciano Alves Pereira da Universidade de Pernambuco, Campus Petrolina. O terceiro artigo apresentado foi elaborado por José Marcos Nunes Benevenute, Sheila Ataíde Domingues de Souza e Ângela Maria do Amaral Abreu Carvalho do Instituto Federal do Espírito Santo, Campus de Alegre. Problemáticas que dificultan el desarrollo de investigaciones en escuelas secundarias de sectores medios-altos. Dos experiencias en la Provincia de Buenos Aires, Argentina é o título do quarto artigo escrito por Pablo Kopelovich da Universidad Nacional de La Plata, Argentina. O quinto artigo foi escrito por Renata Bento Leme, da Universidade Estadual de Londrina, Paraná, e Tania Suely Antonelli Marcelino Brabo da Universidade Estadual Paulista, Campus de Marília, São Paulo. Traços de pesquisa no cotidiano docente: os horários pedagógicos como oportunidade de estudos é o sexto artigo apresentado e foi elaborado por Débora Roquini de Souza e Celso Vallin da Universidade Federal de Lavras, em Minas Gerais.
Aos nossos leitores e leitoras desejamos uma boa leitura.
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Rudolph, Lloyd I. "Self as Other: Amar Singh's Diary as Reflexive ‘Native’ Ethnography." Modern Asian Studies 31, no. 1 (February 1997): 143–75. http://dx.doi.org/10.1017/s0026749x00016966.
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Amar Singh at twenty began writing on a daily basis. His diary extends over 44 years, from 1898 to 1942. Its last entry is dated 1 November 1942. He died that night. These days, the 89 quarto-size bound volumes averaging 800 manuscript pages can be found at Kanota Fort, ten miles east of Jaipur off the Agra road, where Mohan Singh, his nephew and heir, keeps them in glass-fronted Victorian cabinets in one of the several rooms Amar Singh called his library. In the essay that follows1 I try to show why and how Amar Singh, a diarist writing reflexively about himself, constructed a ‘self as other’ethnography of turn-of-the-century princely and British India. Through the medium of his diary he becomes a participant, an observer, an informant, a narrator, and an author. I set the stage for Amar Singhʼns self-as-other ethnography by examining the separation and alienation in anthropological discourse of self and other. Common to ethnography since Malinowskiʼns invented participant-observer field work, the separation was questioned, then challenged by postcolonial Indian and by postmodern Western anthropologists. I then show how Amar Singh, a self-conscious and critical ‘native’ self, constitutes the other in constituting himself. It is a story about how a native came to represent, speak for, and know himself.
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Aiyegbusi, Ayoola, Bidemi Tella, and Chukwuebuka Okeke. "Variáveis biomecânicas dos membros inferiores são indicadores do padrão de apresentação da tendinopatia patelar em atletas de elite africanos de basquetebol e voleibol." Revista Brasileira de Ortopedia 54, no. 05 (September 2019): 540–48. http://dx.doi.org/10.1055/s-0039-1693743.
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Resumo Objetivo Este estudo determinou o padrão de apresentação e gravidade da tendinopatia patelar (TP) e sua relação com variáveis biomecânicas selecionadas em atletas de elite. Métodos O estudo envolveu 98 jogadores de elite nigerianos de basquetebol e voleibol com idades entre 18 e 35 anos. Testes clínicos e ultrassonografia foram usados para separar os participantes em grupos sintomáticos e assintomáticos. Procedimentos padrão foram utilizados para avaliar o ângulo do quadríceps (ângulo Q), a torção da tíbia, a dorsiflexão do tornozelo, a flexibilidade dos isquiotibiais, e a postura do pé. Usou-se o questionário Victorian Institute of Sport Assessment Questionnaire, Patellar Tendon (VISA-P) para avaliar a gravidade dos sintomas nos grupos sintomáticos. A análise estatística foi realizada por meio de análise de variância (ANOVA, na sigla em inglês), análise post hoc, e correlação de Pearson, com nível de significância estabelecido em p < 0,05. Resultados Pontuações significativamente menores de sentar e alcançar (p = 0,01), aumento da pontuação do índice de postura do pé (p = 0,01), e redução da amplitude de dorsiflexão do tornozelo (p = 0,03) foram encontrados em participantes de ambos os sexos com TP sintomática. Ângulos Q (p = 0,02) maiores nos homens e ângulos de torção tibial maiores (p = 0,001) nas mulheres também foram encontrados nos grupos de TP sintomática. A gravidade dos sintomas foi significativamente maior no grupo que tinha apenas sintomas clínicos (p = 0,042), e estava significativamente correlacionada com a flexibilidade dos isquiotibiais tanto nos homens (r = -0,618) quanto nas mulheres (r = -0,664). Conclusão A redução da flexibilidade dos isquiotibiais, o aumento da pronação do pé, e a redução da amplitude de dorsiflexão do tornozelo foram significativos em participantes com TP sintomática.
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PRICE, J. H. "L. J. SCHAAF. Sun gardens Victorian photograms by Anna Atkins. [Silver Mountain Foundation Inc.] New York. Pp 103+ [1]. Quarto. ISBN 0-89381-203-X. Price $30.00. Publication organized by Hans. P. Kraus, Jr, N.Y. [Issued in U.K. by Phaidon, 13 March 1986.]." Archives of Natural History 13, no. 2 (June 1986): 193–95. http://dx.doi.org/10.3366/anh.1986.13.2.193.
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Abrantes da Silva, Alexander, and José Eustáquio Romão. "MIR COSTA, Victoria; GÓMEZ MASDEVALL, Maria Teresa; CARRERAS I SUREDA, Llorenç; NADAL I FARRERAS, Montserrat. Evaluación y postevaluación en educación infantil: Cómo evaluar y qué hacer después. Madrid: Narcea; São Paulo: Cortez, 2016." EccoS – Revista Científica, no. 60 (March 29, 2022): e21284. http://dx.doi.org/10.5585/eccos.n60.21284.
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Embora já tenha mais de cinco anos de publicação, a obra objeto desta resenha, referenciada em epígrafe, se justifica por duas razões: uma editorial e outra de conteúdo. A primeira diz respeito a um programa da Editora Cortez, de São Paulo, de publicar, no Brasil, textos já publicados em outros países, sem traduzi-los, apenas negociando sua impressão no formato original – inclusive com as mesmas características físicas da edição estrangeira –, como é o caso da obra em tela. A segunda, relacionada à primeira, refere-se ao fato de ser muito pobre a bibliografia sobre a avaliação na Educação Infantil acessível aos educadores brasileiros da infância.Incorporada recentemente nos sistemas educacionais brasileiros1, a “Educação Infantil”2 e, mais recentemente ainda, o tema da avaliação da aprendizagem nela aplicada, estão 1Embora a Lei n.º 9.394, de 20 de dezembro de 1996 já tenha um quarto de século, sabemos que a produção de pesquisas sobre avaliação neste grau de ensino continua escassa, não só por sua complexidade, como porque a temática certamente ainda não conquistou prestígio na comunidade acadêmico-científica.2 Aqui registrada entre aspas, porque, embora seja esta a expressão consagrada na própria legislação e largamente disseminada na sociedade brasileira e estrangeira, parece que a denominação mais adequada seria “Educação da Infância”, já que o qualificativo “infantil” carrega consigo uma conotação histórico-sociológicaa merecer mais estudos e pesquisas para passarem a incorporar, respectivamente, as políticas e os programas de formação de educadores de infância e os currículos dirigidos para este segmento da Educação Básica.Avaliar, na Educação Infantil, é mais do que fazer verificações ou medir dimensões das performances estudantis. Aí, a avaliação é uma atividade indissociável das tarefas de ensino e das práticas de aprendizagem. Ela se constitui como uma atividade que deve ser desenvolvida ao longo de todo o processo do-discente em sala de aula. Consensualmente entre os pesquisadores do campo, independentemente de suas diferenças conceituais, a avaliação é uma ferramenta estratégica, seja para a verificação de objetivos e metas alcançadas (ou não) e, neste sentido, útil para a eventual correção de políticas, programas e planos educacionais – ou, no limite, até mesmo para sua eventual substituição –; seja, finalmente, para o desenvolvimento bio-psíquico-cognitivo-social dos pequenos.Ao contrário do que afirmam as teorias mais tradicionais, a avaliação não termina com a publicação dos resultados de determinado desempenho objeto da verificação levada a efeito, mas estende-se, na “pós-avaliação” para sua autoavaliação, em suma, para a meta-avaliação, no sentido de sua própria submissão aos processos que propõe e aplica nos outros” (pessoas e instituições). Aliás, a expressão “pós-avaliação” deve ser posta entre aspas porque a meta- avaliação faz parte intrínseca do próprio processo de avaliação educacional, não vindo, portanto, depois dele. O livro em tela, além de tratar conceptualmente da avaliação, oferecendo um repertório variado de reflexões e exemplos de experiências concretamente vividas em sala de aula, brinda o leitor com procedimentos e instrumentos meta-avaliados, para aplicação, com mais segurança, por educadores da infância que trabalham com crianças da faixa etária de 0 a 6 anos. Como de praxe em qualquer resenha, a(s) autora(s) e o(s) autor(es) da obra resenhada devem ser apresentados inicialmente. No caso da obra em tela, além dos autores – sobre as(os) quais se fala a seguir, registra-se uma “equipe de trabalho”, constituída por Mireia Crespo i Torres, Coral Saus i Raurrel, María Dilmé i Gualta e Montserrat Planas de Farners i Valentí, numa clara demonstração que se trata de uma obra de autoria, mais do que coletiva, mas, transindividual, porque “interdisciplinariza”, sintetiza e socializa teorias, práticas e propostas de uma equipe de pesquisadores (coautores) e de “aplicadores” (equipe de trabalho”).A primeira das autoras é Victoria Mir Costa, licenciada em Pedagogia, professora e diplomada em Atividades Infantis e Juvenis. Foi tutora de estágios, nas universidades de Girona negativa, como algo identificado com a imaturidade. Ora, a educação oferecida aos pequenos e às pequenas não pode ser “infantil”, na medida mesma de sua complexidade, mas, profunda e cientificamente consolidada, pois eles e elas são mais vulneráveis às influências adultas.e Central da Catalunha (UVic)). Ela tem formado uma boa dupla com María Teresa Gómez Masdevall, psicóloga especialista em educação da infância e de adolescentes e docente da Universidade de Sevilha. Por vários anos, ambas vêm sendo coautoras, como, por exemplo, nas obras Propuestas de intervención en el aula: técnicas para lograr um clima favorable en clase (1991) e Altas capacidades em niños y niñas: detección, identificación e integración en la escuela y en la família (2011) e Crecer en valores (2011), as duas primeiras na mesma editora do livro ora em resenha e a última na editora Sal Terrae. Os demais autores, Llorenç Carreras i Sureda (docente na educação Básica), Montserrat Valentí i Plantés (idem) e Anna Nadal i Farreras (formada em Letras e Filosofia pela Universidade de Barcelona) trabalham nas mesmas temáticas mencionadas em relação às duas primeiras autoras e vêm constituindo uma equipe de pesquisadores e docentes, com importantes obras teórico-práticas sobre a educação básica da Catalunha. Uma auto apresentação de Anna Nadal i Farreras sintetiza o espírito das equipes que produziram esta obra:Eu me defino como mãe, professora e cidadã. Eu sou apaixonada pelo meu trabalho. Tenho o privilégio de trabalhar pelo que mais gosto e com extraordinários companheiros de viagem (alunos, familiares e professores). Continuamos fiéis ao trabalho por uma escola inovadora, solidária, participativa, democrática, sensível à diversidade e que valoriza o zelo criativo das crianças. Uma escola alegre e animada onde todos somos atores, famílias, alunos e professores (https://educaciodema.cat/qui-es-qui/innovador/anna-maria-nadal-farreras, consultado em 20 de novembro de 2021).Evaluación y postevaluación en educación Infantil trata da avaliação que se debruça sobre o antes, o durante e o depois da vida do estudante pequeno em momentos determinados da verificação da aprendizagem na escola. Mesmo porque a proposta abriga-se numa concepção que privilegia a avaliação em processo, isto é, aquela que se dá ao longo e no próprio processo do-discente. De uma certa maneira, as autoras e os autores da obra se inscrevem no universo da chamada “avaliação formativa”, sem qualquer preocupação com comparações e classificações.Certamente, a avaliação sempre ocorreu, desde que o ser humano passou a analisar conscientemente suas escolhas, a partir de critérios e objetivos. Contudo, a avaliação foi compreendida inicialmente apenas para comparar e medir, sem tratar da valorização da pessoa como agente de sua própria aprendizagem – mediatizado pelo mundo, como dizia Paulo Freireem várias de suas obras – e de sua própria avaliação.Os autores deste livro deixam claro que a avaliação, de alguma forma, está destinada a evidenciar os equívocos dos avaliados em um determinado desempenho, mas, ao mesmo tempo, ela não pode deixar de demonstrar os avanços, fazendo-a instrumento de um projeto de alegria,de modo que as próprias educandas e os próprios educandos encontrem motivos e desejos reais para serem avaliados e passarem a avaliar as próprias dificuldades.Fica claro no texto que, na avaliação da aprendizagem, entrelaçam-se dois eixos: verificação da aprendizagem das(os) estudantes e levantamento, identificação e análise das práticas político-pedagógicas das professoras e dos professores. As autoras e o autor previnem: “A criança deve ser compreendida, aceita e amada por seus pais e professores” (p. 33). Nessa perspectiva, acentuam que o trabalho educativo deve fazer com que a(o) educanda(o) aceite a si mesmo, fazendo da avaliação um hábito que, desde a infância, fará a(o) menina(o) encontrar condições de refletir sobre seus problemas comuns, buscando o próprio aperfeiçoamento para melhor interferir e se inserir no mundo. Mais do que avaliar a capacidade cognitiva, afetiva, psicomotora etc. da(o) educanda(o), a obra destaca que é preciso levá-la(o) a contribuir consigo mesma(o) por meio do pensamento crítico, a fim de melhor situar-se nos coletivos, já que o ser humano é um ser que somente se plenifica pela vida em sociedade, intervindo na realidade de modo mais qualificado.A avaliação, demonstram as autoras e o autor, é um tema que requer objetividade, clareza, liberdade e criatividade, para que os que nela se envolvem sejam formados como sujeitos livres, criativos e capazes de se adaptarem às diferentes culturas e às novas tecnologias.Os professores, em sua maioria, têm uma imagem consolidada de avaliação no sentidode ela ser um instrumento que aprisiona os estudantes ao fracasso e, pela revelação deste fracasso, atentam contra sua autoestima, pois, na maioria dos casos, não lhes dão chance de participação do processo avaliativo, a não ser como objetos e, não, como sujeitos autônomos, críticos e responsáveis. Se a escola não trabalha a avaliação formativa, impedirá a formação de sujeitos capazes de “voar”. A avaliação é primordial, pois, mesmo nela, o professor é um facilitador da aprendizagem dos estudantes, na medida em que revela seus avanços e os desafios ainda não superados, mas que podem sê-lo, se bem desvendados na meta-avaliação.O livro evidencia um dos aspectos mais importantes da avaliação na educação para a infância e, por que não dizer do próprio processo educacional de crianças como um todo: a importância das atividades lúdicas, mesmo nos momentos formais da verificação das aprendizagens, sem falar que oferece um amplo e diversificado repertório de instrumentos de avaliação “empapados” de ludicidade. Nos instrumentos e exemplo oferecidos destaca-se, ainda, a oportunidade e a propriedade das expressões não orais, mais especificamente, das expressões corporais, certamente voltadas para a avaliação do desenvolvimento psicomotor das crianças, sem falar que a linguagem corporal acaba por se revelar como poderoso canal de comunicação.Como as autoras e o autor da obra tratam do insucesso do estudante e da estudante infantil? Tratam-nos como fracassados e fracassadas, que devem ser condenados e condenadas à exclusão do ambiente escolar? De modo algum: são reconhecidos e reconhecidas como seres capazes de aprender, na medida em que são considerados como protagonistas de sua própria avaliação. Nessa medida, cabe a nós leitores refletirmos sobre suas análises e propostas.Mais do que um texto de avaliação para a Educação Infantil, mais do que mais um livro na pobre literatura do campo, a obra é, também, um manual de didática, no bom sentido dos dois termos, com sugestões preciosas de atividades a serem desenvolvidas com crianças, sem falar na ampla e magnífica antologia de contos e de jogos, detalhadamente descritos e disponibilizados para os educadores e educadoras da infância. Certamente, por sua riqueza e profundidade, o livro não deve ser recomendado somente aos educadores da infância que trabalham profissionalmente nas instituições de Educação Infantil do País, mas a todos os educadores que lidam com crianças da primeira infância.
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Hartigan, Joshua, Shev MacNamara, Lance Leslie, and Milton Speer. "High resolution simulations of a tornadic storm affecting Sydney." ANZIAM Journal 62 (May 23, 2021): C1—C15. http://dx.doi.org/10.21914/anziamj.v62.16113.
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On 16 December 2015 a severe thunderstorm and associated tornado affected Sydney causing widespread damage and insured losses of $206 million. Severe impacts occurred in Kurnell, requiring repairs to Sydney's desalination plant which supplies up to 15% of Sydney water during drought, with repairs only completed at the end of 2018. Climatologically, this storm was unusual as it occurred during the morning and had developed over the ocean, rather than developing inland during the afternoon as is the case for many severe storms impacting the Sydney region. Simulations of the Kurnell storm were conducted using the Weather Research and Forecasting (WRF) model on a double nested domain using the Morrison microphysics scheme and the NSSL 2-moment 4-ice microphysics scheme. Both simulations produced severe storms that followed paths similar to the observed storm. However, the storm produced under the Morrison scheme did not have the same morphology as the observed storm. Meanwhile, the storm simulated with the NSSL scheme displayed cyclical low- and mid-level mesocyclone development, which was observed in the Kurnell storm, highlighting that the atmosphere supported the development of severe rotating thunderstorms with the potential for tornadogenesis. The NSSL storm also produced severe hail and surface winds, similar to observations. The ability of WRF to simulate general convective characteristics and a storm similar to that observed displays the applicability of this model to study the causes of severe high-impact Australian thunderstorms. References J. T. Allen and E. R. Allen. A review of severe thunderstorms in Australia. Atmos. Res., 178:347–366, 2016. doi:10.1016/j.atmosres.2016.03.011. Bureau of Meteorology. Severe Storms Archive, 2020. URL http://www.bom.gov.au/australia/stormarchive/. D. T. Dawson II, M. Xue, J. A. Milbrandt, and M. K. Yau. Comparison of evaporation and cold pool development between single-moment and multimoment bulk microphysics schemes in idealized simulations of tornadic thunderstorms. Month. Wea. Rev., 138:1152–1171, 2010. doi:10.1175/2009MWR2956.1. H. Hersbach, B. Bell, P. Berrisford, S. Hirahara, A. Horanyi, J. Munoz-Sabater, J. Nicolas, C. Peubey, R. Radu, D. Schepers, et al. The ERA5 global reanalysis. Quart. J. Roy. Meteor. Soc., 146:1999–2049, 2020. doi:10.1002/qj.3803. Insurance Council of Australia. Victorian bushfire losses push summer catastrophe bill past $550m, 2016. E. R. Mansell, C. L. Ziegler, and E. C. Bruning. Simulated electrification of a small thunderstorm with two-moment bulk microphysics. J. Atmos. Sci., 67:171–194, 2010. doi:10.1175/2009JAS2965.1. R. C. Miller. Notes on analysis and severe-storm forecasting procedures of the Air Force Global Weather Central, volume 200. Air Weather Service, 1972. URL https://apps.dtic.mil/sti/citations/AD0744042. H. Morrison, J. A. Curry, and V. I. Khvorostyanov. A new double-moment microphysics parameterization for application in cloud and climate models. Part I: Description. J. Atmos. Sci., 62:1665–1677, 2005. doi:10.1175/JAS3446.1. H. Morrison, G. Thompson, and V. Tatarskii. Impact of cloud microphysics on the development of trailing stratiform precipitation in a simulated squall line: Comparison of one- and two-moment schemes. Month. Wea. Rev., 137:991–1007, 2009. doi:10.1175/2008MWR2556.1. J. G. Powers, J. B. Klemp, W. C. Skamarock, C. A. Davis, J. Dudhia, D. O. Gill, J. L. Coen, D. J. Gochis, R. Ahmadov, S. E. Peckham, et al. The Weather Research and Forecasting Model: Overview, system efforts, and future directions. Bull. Am. Meteor. Soc., 98:1717–1737, 2017. doi:10.1175/BAMS-D-15-00308.1. H. Richter, A. Protat, J. Taylor, and J. Soderholm. Doppler radar and storm environment observations of a maritime tornadic supercell in Sydney, Australia. In Preprints, 28th Conf. on Severe Local Storms, Portland OR, Amer. Meteor. Soc. P, 2016. W. C. Skamarock, J. B. Klemp, J. Dudhia, D. O. Gill, Z. Liu, J. Berner, W. Wang, J. G. Powers, M. G. Duda, D. Barker, and X.-Y. Huang. A description of the advanced research WRF Model version 4. Technical report, 2019. Storm Prediction Center. The Enhanced Fujita Scale (EF Scale), 2014. URL https://www.spc.noaa.gov/efscale/. R. A. Warren, H. A. Ramsay, S. T. Siems, M. J. Manton, J. R. Peter, A. Protat, and A. Pillalamarri. Radar-based climatology of damaging hailstorms in Brisbane and Sydney, Australia. Quart. J. Roy. Meteor. Soc., 146:505–530, 2020. doi:10.1002/qj.3693.
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Oliveira, Rafael, João Paulo Brito, Nuno Loureiro, Vítor Padinha, Bruno Ferreira, and Bruno Mendes. "Effects of match location, match result and the quality of opposition in training load on a two-matches week in a top-class elite European soccer team." Cuadernos de Psicología del Deporte 21, no. 2 (April 20, 2021): 183–97. http://dx.doi.org/10.6018/cpd.465531.
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El fútbol y el rendimiento pueden verse afectados por variables de contexto. Así, el objetivo de este estudio es analizar los efectos de la ubicación, resultado del juego y nivel de los oponentes sobre la carga de entrenamiento en los dos días posteriores al juego (día del juego [MD] más [+], MD+1; MD+2) en un equipo de fútbol europeo de élite que participó en la UEFA Champions League en la temporada 2015/16. Nueve jugadores participaron en este estudio. Analizamos: utilicé un sistema de posicionamiento global para medir la distancia total (TD), distancias con diferentes zonas de intensidad (1-5) y velocidad media (AvS). También se recogieron el esfuerzo subjetivo percibido de la sesión (s-RPE) y el Índice Hooper (fatiga, estrés, calidad del sueño, dolor muscular-DOMS). Cada semana analizada incluyó dos juegos. Los principales resultados mostraron valores más bajos de DOMS, tamaño del efecto (ES) = 1,69 y fatiga, ES = 1,25, en MD+1 después de una victoria fuera de casa que una derrota en casa ante un rival de bajo nivel (todos, p<0.05). También se observaron valores más altos de calidad del sueño, ES = 1,44, zona 1, ES = -4,35 y AvS, ES = -12,65, pero valores más bajos de s-RPE, ES = 3,52, en MD+1 después de una victoria a domicilio, contra un oponente nacional de alto nivel (todos, p<0.05). Finalmente, se observaron valores más altos para la zona 3, ES = 1,71, y valores más bajos para AvS, ES = -6,06 en la MD+1 después de ganar fuera de casa que después de una derrota en casa, contra un oponente en la liga de campeones número 1 (todos, p<0.05). TD, AvS y zona 4 fueron más altos en MD+1 después de jugar contra oponentes nacionales en MD+1 que en MD+2 y / o oponentes en la liga de campeones que en MD+2. En general, cuanto mayor sea la calidad de los oponentes, mayor será el valor del índice Hooper en el MD+1. S-RPE fue más alto después de jugar con un oponente de bajo nivel en comparación con los otros oponentes. Además, después de jugar contra oponentes nacionales, TD, zona 1 y zona 4 fueron mayores que contra oponentes internacionales. The aim of this study is to analyse effects of match location, match result and level of opponents in training load on the two following days of the match (MD+1; MD+2) in a top-class elite soccer European team. Nine players participated in this study. Total distance covered, distances of different exercise training zones (1–5) and average speed (AvS) were analysed. The session rating of perceived exertion (s-RPE) and Hooper Index scores (fatigue, stress, sleep quality, delayed onset muscle soreness-DOMS) were also analysed. Data was analysed regarding the two following days of a match. All weeks analysed included two matches. The results showed lower values of DOMS, effect size (ES)= 1.69, and fatigue ES=1.25, on the day following an away-win match than a home-defeat match against a bottom level opponent (all, p<0.05). It was also observed higher values of sleep quality ES=1.44, zone 1, ES=-4.35, and AvS, ES=-12.65, but lower values of s-RPE, ES=3.52, on the day following away-win match against a national top-level opponent (TLO). Finally, higher values for zone 3, ES=1.71, and lower value for AvS, ES=-6.06 were observed on the day following away-win match than a home-defeat match against champions league opponent number 1 (all, p<0.05). Total distance, AvS and zone 4 were higher after playing national opponents and/or champions league opponents in MD+1 than MD+2. The pattern of training load seems to be affected by situational variables. In general, the higher the quality of the opponents, the higher Hooper index in MD+1. S-RPE seems to be higher after playing a bottom level opponent when compared with the other opponents. Also, after playing national opponents, total distance, zones 1 and 4 were higher than against international opponents. O objetivo deste estudo é analisar os efeitos da localização, resultado do jogo e nível dos adversários na carga de treino nos dois dias seguintes ao jogo (MD+1; MD+2) numa equipa de futebol europeia de elite. Nove jogadores participaram neste estudo. Foram analisadas: distância total (TD), distâncias com zonas de intensidade (1–5) e velocidade média (AvS). A perceção subjetiva de esforço da sessão (s-RPE) e o Índice de Hooper (fadiga, stress, qualidade do sono, dor muscular-DOMS) também foram analisados. Todas as semanas analisadas incluíram dois jogos. Os resultados mostraram valores mais baixos de DOMS, tamanho do efeito (ES)=1,69 e fadiga, ES=1,25, no MD+1 após uma vitória fora de casa do que uma derrota em casa contra um adversário de baixo nível (todos, p<0.05). Também foram observados valores mais elevados de qualidade do sono, ES=1,44, zona 1, ES=-4,35 e AvS, ES=-12,65, mas valores mais reduzidos de s-RPE, ES=3,52, no MD+1 após uma vitória fora de casa, contra um adversário nacional de alto nível (todos, p<0.05). Finalmente, foram observados valores mais altos para a zona 3, ES=1,71 e valores mais baixos para AvS, ES=-6,06 no MD+1 após vitória fora de casa do que após uma derrota em casa, contra adversário na liga dos campeões número 1 (todos, p<0.05). TD, AvS e zona 4 foram maiores no MD+1 depois de jogar contra adversários nacionais e/ou adversários da liga dos campeões do que no MD+2. Em geral, quanto maior a qualidade dos adversários, maior o valor do índice de Hooper no MD+1. S-RPE foi maior depois de jogar com um oponente de nível baixo quando comparado com os outros oponentes. Além disso, depois de jogar contra adversários nacionais, TD, zonas 1 e 4 foram maiores do que contra adversários internacionais.
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ΛΟΥΓΓΗΣ, Τηλέμαχος Κ. "Δοκίμιο για την κοινωνική εξέλιξη στη διάρκεια των λεγόμενων «σκοτεινών αιώνων»." BYZANTINA SYMMEIKTA 6 (September 29, 1985): 139. http://dx.doi.org/10.12681/byzsym.701.
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<p> </p><p>T. C. Lounghis</p><p>Essai sur l'évolution sociale à Byzance pendant les «siècles obscurs»<em> </em></p><p>Se basant sur les données des sources narratives (Chronographies de Théophane et de Nicéphore et quelques vies de saints) l'étude tâche de suivre les changements internes de la société byzantine, changements qui, depuis la révolution de Phocas en 602, ont abouti à la transformation radicale de ses structures vers le troisième quart du IXe siècle.</p><p>La première partie, sous le titre «la fin de l'aristocratie protobyzantine» mène de 602 à la mort du second empereur iconoclaste Constantin V en 775: pendant le VIIe siècle, la noblesse sénatoriale qui avait pu -jusqu'à la fin du VIe siècle - intégrer et assimiler dans ses rangs les débris de l'ex-aristocratie provinciale des <em>curiales, </em>mène une lutte de survie contre la force ascendante de la société byzantine de l'époque qu'est l'armée provinciale des thèmes. Entre ces deux camps qui se heurtent violemment, les empereurs de la dynastie d'Héraclius n'ont pas d'attitudes semblables: Héraclius et Constantin IV sont pour le sénat et ils ont à l'égard de l'armée une méfiance vindicative; par contre, Constant II et Justinien II mènent toute une lutte contre les nobles et les sénateurs et ils sont obligés à maintes reprises de prendre la fuite devant la haine de l'aristocratie. </p><p>Après maintes vicissitudes, l'armée peut renverser les empereurs qui soutiennent la noblesse sénatoriale Léonce, Philippicus et Anastase II, pendant que dans le camp des militaires le rapport des forces penche du côté des Anatoliques avec Léon l'Isaurien tandis que, jusqu'en 716/717 les soldats de l'Opsikion en constituaient la force prépondérante. Après 717 la noblesse sénatoriale passe à l'opposition et l'armée triomphante donne l'assaut contre la dernière partie de l'aristocratie protobyzantine qui est restée intacte jusqu'alors: le haut clergé et les moines. La lutte entre l'armée et le clergé constitue le noyau de la lutte sociale pendant le premier Iconoclasme. Tout au long de la narration sont eclaircis maints détails en aboutissant à d'identifications de détail (l'amiral Jean de 715 est le même amiral Jean de 698, le sceau d'Isôès, comte de l'Opsikion etc.).</p><p>La deuxième partie sous le titre «les débuts de la nouvelle aristocratie byzantine» a comme point de départ la capitulation idéologique des chefs de l'armée des thèmes devant l'autorité du clergé et des moines, peu après la victoire des militaires sous Constantin V. L'alliance entre les chefs de l'armée et le clergé constitue le noyau de la nouvelle aristocratie byzantine qui ne cessera dans l'avenir d'élargir son influence et ses activités, au point de rendre l'institution impériale de plus en plus inefficace pendant le IXe siècle. Nicéphore Ier et Staurakios qui sont déjà pleinement conscients du fait que l'aristocratie mentionnée comme nouvelle dans la Chronique de l'an 811 peut réduire le régime byzantin en <em>démocratie, </em>reprennent les réformes de Constantin V sans le prétexte iconoclaste qui ne peut plus leur assurer le support des stratèges; Léon V et Théophile font de vains efforts pour subjuguer l'alliance entre le clergé et l'armée en ranimant la querelle iconoclaste mais le prétexte iconoclaste n'a plus aucune chance. L'échec de Théophile prend des dimensions alarmantes sous le règne de Michel III qui est totalement dépassé par les initiatives de la nouvelle aristocratie qu'avait vainement combattu son père. Ainsi, l'avènement de Basile Ier peut être désigné comme une réaction de l'institution impériale devant le danger que constitue pour elle la nouvelle aristocratie. Le schéma théorique exposé ci-dessus est suivi pas à pas et presque rien n'est laissé au hasard: la disparition des institutions protobyzantines et leur remplacement par de nouvelles institutions depuis le VIIe siècle; l'évolution du régime des thèmes; la soi-disante rébellion des Arméniaques en 793 ; l'apparition de la nouvelle aristocratie dans la Chronique de l'an 811; le rôle des mouvements populaires (Thomas le Slave et, dans une certaine mesure, les Pauliciens); les relations entre l'armée et le clergé à tout moment donné; la destinée des officiers moyens de l'armée après la capitulation idéologique de leurs chefs; les initiatives politiques de la nouvelle aristocratie; l'attitude de Michel II le Bègue en tant que premier empereur qui s'appuie consciemment sur la nouvelle aristocratie; la révolte avortée de Bardanès Tourcos etc.</p><p>L'étude vise à démontrer que toutes les transformations politiques, institutionnelles etc. qui ont dû avoir lieu pendant les «siècles obscurs» sont des produits concrets et directs ou indirects d'une lutte sociale très réelle et très profonde à la fois qui a mené à de changements de structures, à de changements qualitatifs. Tandis que la noblesse protobyzantine était composée par la noblesse sénatoriale, la noblesse des villes de province et le clergé, la noblesse mésobyzantine est composée principalement par l'armée et le clergé (vu que m. A. Guillou a déjà remarqué en ce qui concerne l'exarchat de Ravenne au VIIe siècle). Une attention particulière est accordée aux vicissitudes du rôle des militaires, depuis la «terreur» de Phocas jusqu'à l'avènement de Basile Ier. Quelques empereurs, tel Constantin IV ou Anastase II perdent quelque chose de leur auréole, tandis que d'autres, tel Constant II et Justinien II sont placés sans louanges dans le vrai contexte politique de leur époque. Toute la structure de l'étude, en dernière analyse, tend à soutenir que des affirmations comme «Héraclius s'est trompé d'ennemi (au lieu d'attaquer les Arabes, il a détruit la Perse!!!), ou «tel empereur est mort très jeune» ou encore «Michel III était bon ou mauvais empereur» n'ont aucune place dans la science de l'Histoire et doivent en être définitivement exclus.</p>
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Brasil Irala, Valesca, Paulo Fernando Marques Duarte Filho, and Gabriela Bohlmann Duarte. "Cenário avaliativo inovador no Ensino Superior: análise a partir de uma e-rubrica holística bifocal (An innovative assessment scenario in Higher Education: analysis from a bifocal holistic e-rubric)." Revista Eletrônica de Educação 15 (December 22, 2021): e5223072. http://dx.doi.org/10.14244/198271995223.
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e5223072This text focuses on the adoption of innovative assessment practices in Higher Education. The study was carried out in two curricular components, Spanish and English Literacies, of an Additional Languages undergraduate program, offered in a public university in Brazil. It aims to contrast the use of a holistic e-rubric, adopted to assess both the process and the outcome of the students' performances during an academic semester in which an interdisciplinary project was promoted, based on the theme of Happiness. Throughout the semester, a set of mentoring sessions aimed at qualifying the actors' assessment literacy. At the end of the academic semester, it was proposed that both professors and students used the same holistic rubric created for both subjects. The data showed that there were no statistical differences between the scores assigned by the professors and the self-rated scores by the students. Also, the final performances were higher with the adoption of the implemented assessment proposal, compared to the semesters in which there was no assessment through rubrics nor did the integrated work between both disciplines. The experience brought reliability to the professors about the students' sincere and adequate self-perception concerning their knowledge, and it proved to be favorable for the expansion, diffusion, and adoption of similar proposals in other contexts.ResumoEste texto está centrado na adoção de práticas avaliativas inovadoras no Ensino Superior. O estudo foi realizado em dois componentes curriculares, Letramentos em Espanhol e Letramento em Inglês, de um curso de Letras - Línguas Adicionais ofertado em uma universidade pública brasileira, tendo como objetivo contrastar a utilização de uma e-rubrica holística adotada para a avaliação tanto do processo quanto dos resultados de desempenhos discentes durante um semestre letivo em que se promoveu um projeto integrado a partir da temática da Felicidade. Ao longo do semestre, foram realizadas um conjunto de mentorias voltadas a qualificar o letramento em avaliação dos atores envolvidos. Ao final do semestre letivo, foi proposto que tanto as docentes quanto os discentes lançassem mão de uma mesma rubrica holística criada para ambas as disciplinas. Os dados evidenciaram que não ocorreram diferenças estatísticas entre as pontuações atribuídas pelas docentes e as pontuações autoatribuídas pelos discentes. Além disso, os desempenhos finais foram mais altos com a adoção da proposta avaliativa implementada, em comparação aos semestres em que não havia a avaliação através de rubricas e tampouco o trabalho integrado entre ambas as disciplinas. A experiência trouxe confiabilidade para as docentes sobre a autopercepção sincera e adequada dos discentes em relação ao seu conhecimento e se mostrou favorável para ampliação, difusão e adoção de propostas similares em outros contextos.ResumenEste texto se centra en la adopción de prácticas evaluativas innovadoras en la educación superior. El estudio se llevó a cabo en dos asignaturas, Literacidad en Español y Literacidad en Inglés, de un curso de Letras - Lenguas Adicionales que se ofrece en una universidad pública brasileña, con el objetivo de contrastar el uso de una e-rúbrica holística adoptada tanto para la evaluación de los procesos como de los resultados de las actuaciones de los estudiantes durante un semestre académico en el que se impulsó un proyecto integrado, con base en la temática de la Felicidad. A lo largo del semestre, se llevó a cabo un conjunto de sesiones de mentorías orientadas a calificar la literacidad en evaluación de los actores involucrados. Al final del semestre académico, se propuso que tanto las profesoras como los estudiantes utilizaran la misma rúbrica holística creada para ambas asignaturas. Los datos demostraron que no hubo diferencia estadística entre los puntajes asignados por las profesoras y los puntajes de las autocalificaciones asignadas por los estudiantes. Además, los desempeños finales fueron superiores con la adopción de la propuesta de evaluación implementada, en comparación a los semestres en que no hubo evaluación a través de rúbricas ni tampoco el trabajo integrado entre ambas asignaturas. La experiencia brindó confiabilidad a las docentes sobre la autopercepción sincera y adecuada de los estudiantes con respecto a sus conocimientos y resultó favorable para la expansión, difusión y adopción de propuestas similares en otros contextos.Palavras-chave: Avaliação do Desempenho Discente, Ensino Superior, Educação para a Inovação, Curso de Licenciatura.Keywords: Student Performance Assessment, Higher Education, Education for Innovation, Undergraduate Teaching Course.Palabras clave: Evaluación de la Actuación Estudiantil, Enseñanza Superior, Educación para la Innovación, Carrera de Formación Docente.ReferencesAUBUSSON, Peter; SCHUCK, Sandy. Researching and Learning from our Practices. In: AUBUSSON, Peter; SCHUCK, Sandy. (Orgs.). 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