Plantae Yucatanae. (Regionis Antillanae) Plants of the insular, coastal and plain regions of the peninsula of Yucatan, Mexico. [By Charles Frederick Millspaugh.].

v.3:no.2(1904)

Cape of Good Hope and Cape Town Region, South Africa, Nautical Chart, 1822 (Raster Image)

This layer is a georeferenced raster image of the historic, paper map entitled: Survey of the Cape of Good Hope, by Lieut. A.T.E. Vidal of H.M.S. Leven, assisted by Captn. Chas. Lechmere, R.N. Lieut T. Boteler, and Mr. H.A. Gibbons, Admlty. Midn. under the direction of Captn. W.F.W. Owen, 1822. J. & C. Walker sculpt. It was published according to Act of Parliament at the Hydrographical Office of the Admiralty, 4th March 1828. Scale [ca. 1:153,512]. Covers the Cape Peninsula region, including False Bay and Cape Town, South Africa. The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'WGS 1984 UTM 34S' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows coastal features such as beacons, rocks, channels, points, coves, islands, bottom soil types, anchorage points, and more. Includes also selected land features such as roads, drainage, land cover, selected buildings, towns, and more. Relief shown by contours; depths by soundings. Includes notes, table of heights, and two views. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

U, FE, AND LI ISOTOPE RATIOS IN THE MINERALIZED AND BARREN AREAS OF THE KOMBOLGIE BASIN

The Paleo- to Meso-Proterozoic Jabiluka unconformity related uranium mine is located within the Alligator River Uranium Field, found in the Northern Territories, Australia. The uranium ore is hosted in the late middle Paleoproterozoic Cahill Formation, which is unconformably overlain by a group of unmetamorphosed conglomerates known as the Kombolgie subgroup. The Kombolgie subgroup provided the source for oxidized basinal brines, carrying U as the mobile form U(VI), which interacted with reducing lithologies in the Cahill formation, thus reducing U(VI) to the solid U(IV), and leading to the precipitation of uraninite (UO2). In order to characterize fluid interaction with the ore body and compare that to areas without mineralization, several isotopic tracers were studied on a series of clay samples from drill core at Jabiluka as well as in barren areas throughout the ARUF. Among the potential tracers, three were selected: U (redox sensitive and recent fluid mobilization), Fe (redox sensitive), and Li (fractionated by hydrothermal fluids and adsorption reactions). δ238U values were found to be closely linked to the mineralogy, with samples with higher K/Al ratios (indicating high illite and low chlorite concentrations) having higher δ238U values. This demonstrates that 235U preferentially absorbs onto the surface of chlorite during hydrothermal circulation. In addition, δ234U values lie far from secular equilibrium (δ234U of 30‰), indicating there was addition or removal of 234U from the surface of the samples from recent (<2.5Ma) interactions of mobile fluids. δ57Fe values were found to be related to lithology and spatially to known uranium deposits. Decreasing δ57Fe values were found with increasing depth to the unconformity in a drill hole directly above the ore zone, but not in drill holes in the barren area. Similarly to δ238U, δ7Li is found to correlate with mineralogy, with higher δ7Li values associated with samples with more chlorite. In addition, higher δ7Li values are found at greater depth throughout the basin, indicating that the direction of the mineralizing fluid circulation was upwards from the Cahill formation to the Kombolgie subgroup.

The impact of demographic change and its challenges for the workforce in the European public sectors. Three priority areas to invest in future HRM. EIPA Working Paper 2012/W/01

European public sectors are particularly affected by the demographic challenge and an ageing and shrinking workforce. According to OECD statistics, over 30% of public employees of central government in 13 countries will leave during the next 15 years. Moreover, the public sector has as compared to the private sector to rely on a much older workforce, who will have to work longer in future. Against this background, European governments need to react and re-think major elements of current HR and organisational management in the public sector. Particularly the skills in age management should be improved in order to also maintain in future a highly productive, competent and efficient public sector and to ensure that public employees stay longer ‘employable’, ‘healthy’, ‘fit for the job’ and ‘up to the task’. The survey suggests some solutions by investing more in three priority areas in the field of HRM.