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41.
Ana Julia Sagasti Juan García Massini Ignacio H. Escapa Diego M. Guido Alan Channing 《Alcheringa: An Australasian Journal of Paleontology》2016,40(4):456-474
Sagasti, A.J., García Massini, J., Escapa, I.H., Guido, D.M. & Channing, A., August 2016. Millerocaulis zamunerae sp. nov. (Osmundaceae) from Jurassic geothermally influenced wetland environments of Patagonia, Argentina. Alcheringa 40, xxx–xxx. ISSN 0311-5518A new species of Millerocaulis Erasmus ex. Tidwell emend. Vera is defined based on several permineralized stems recovered from geothermally influenced chert deposits in the Middle–Late Jurassic La Matilde Formation (Santa Cruz, Argentina). Millerocaulis zamunerae sp. nov. is characterized by the presence of an ectophloic dictyoxylic siphonostele, inner parenchymatic and outer sclerotic cortices, homogeneous sclerotic ring in the petiole bases, two masses of sclerenchyma lining the concavity of the petiolar vascular bundle, petiolar inner cortex with sclerenchyma strands in the outermost petiole cycles and stipular wings having one large and several smaller sclerenchyma bundles. Millerocaulis zamunerae inhabited geothermal wetlands and other hot-spring-related sedimentary facies associated with the La Bajada epithermal deposit. Reference to active geothermal wetlands, analogous living plants and other fossil hot spring ecosystems suggest the plant’s tolerance of physico-chemical stressors including elevated temperature, pH, salinity and phytotoxic metals/metalloids. Millerocaulis zamunerae thrived in wetlands preserved in the Jurassic geothermal systems of Santa Cruz Province, the same kind of environment in which Equisetum thermale Channing et al. was recorded previously.Ana Julia Sagasti [anajusagasti@gmail. com] División Paleobotánica, Facultad de Ciencias Naturales y Museo. Becaria Doctoral Consejo Nacional de Investigaciones Científicas y Técnicas, Paseo del Bosque S/N B1900FWA La Plata, Buenos Aires, Argentina. Juan García Massini [massini112@yahoo. com. ar] Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), Provincia de La Rioja, UNLaR, SEGEMAR, UNCa, CONICET. Entre Ríos y Mendoza S/N, 5301 Anillaco, La Rioja Argentina. Ignacio H. Escapa [iescapa@mef. org. ar] Museo Paleontológico Egidio Feruglio, Consejo Nacional de Investigaciones Científicas y Técnicas, Av. Fontana 140, U9100GYO, Trelew, Chubut, Argentina. Diego M. Guido [diegoguido@yahoo. com] Instituto de Recursos Minerales (INREMI), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. Consejo Nacional de Investigaciones Científicas y Técnicas. Calle 64 y 120, La Plata (1900), Argentina. Alan Channing [channinga@gmail. com] School of Earth & Ocean Sciences, Cardiff University, Cardiff CF10 3AT, UK. 相似文献
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High-tech development has been broadly accepted as a prominent matter of regional development policies and plans at the global level. Strategies to enhance it have evident implications for spatial planning policies, plans and visions. Consequently, careful attention should be paid to the role that spatial planning policies play in the national and regional efforts to advance high-tech development in a particular place. This study addresses the relationship between the spatial planning system and high-tech development, searching to explain the spatial implications resulting from this relationship. It approaches the topic by comparing high-tech development experiences in the Netherlands and Taiwan from an institutional perspective. Although both countries have used a range of spatial strategies for economic growth through high-tech development, the results show that their different institutional settings, power relations between different levels of government and conceptions of science park have led to the implementation of two very distinct spatial strategies, shaping different spatial patterns of high-tech development clustering in these two regions. The findings demonstrate the potential of the institutional approach to study international planning issues, and contribute to theories of high-tech development and spatial planning. 相似文献
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Ana Dragojlovic 《Gender, place and culture : a journal of feminist geography》2016,23(2):243-256
Scholarly literature on interpersonal relationships between tourist women and local men has been largely discussed under the heteronormative framework of love and sexuality. However, the plenitude of ways in which these intimacies manifest themselves requires that we pay attention to the manifold forms of heterosexual relatedness that these intimacies generate. This article considers how intimate liaisons between Western women and Balinese men that commenced as holiday romances in Bali transform into unruly relationality and transnational motherhood. Focusing the analysis on women's narratives, the article explores how subjects engage in the production of sexual, reproductive, social and economic forms of transnational relatedness wherein the mother and child live permanently in the women's country of citizenship while the Balinese father remains in Bali. Rather than aspiring towards a monogamous relationship and cohabitation as heteronormativity prescribes, the article demonstrates how these non-conventional, transnational families perpetually challenge the nuclear family norm, boundaries of normative motherhood and dichotomies of home versus away. 相似文献
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Social mobilizations that are devoted to contesting development and creating alternative economic arrangements conducive to the pursuit of a dignified life have recently sprung up. Not only do they criticize the current state of affairs but they actively seek and experience new ways of living, inspired by what Bloch calls the anticipatory consciousness of the ‘not‐yet‐become’, that is, another reality not yet materialized but which can be already experienced. This article argues that these mobilizations are not adequately captured by the term ‘social movements’. The uniqueness of these mobilizations requires a conceptual and epistemological turn that is able to accommodate the post‐development critique of development as well as their emancipatory dimension. We propose to name them ‘hope movements’ to account for the collective action directed to anticipate, imperfectly, alternative realities that arise from the openness of the present one. We conclude by discussing the political relevance of hope movements for the pursuit of the good life as an alternative to development. 相似文献
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Ana M. González Ramos 《Gender, place and culture : a journal of feminist geography》2013,20(5):613-629
International mobility has become a key requirement in science and technology (S&T) professional career progression. On the one hand, the increasing mobility of women suggests that this may be a way for them to avoid or get away from women-unfriendly working environments. On the other hand, international mobility can present problems for women as they, particularly, have to plan their lives around their professional goals and personal lives. This article addresses the international mobility strategies of women regarding their personal and professional choices. We analyse their motivations to move, the way they manage their lives abroad and the effects of mobility on their lives. The analysis is based on 24 in-depth interviews of highly skilled women working in Spanish S&T sectors. Our main findings show that mobility is a new challenge which may improve women's family lives and professional careers. However, they have to plan carefully their lives on a long-term as well as a daily basis. In this sense, they need strong personal determination and the ability to balance their professional and personal goals. Moreover, their personal decisions depend not only on them as individuals, but also on their partners and families, on wider social values, on the institutional support they enjoy, and on the general public policies which they are affected by. 相似文献
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Ana Ejarque Yannick Miras Santiago Riera Josep Maria Palet Hector A. Orengo 《Journal of archaeological science》2010
Previous research acknowledges the ancient and complex land-use history of European mountainous areas, which are characterised by a remarkable regional variability in terms of human practices and patterns of occupation during the Holocene. However, the combined palaeoenvironmental and archaeological study of highland human management at a micro-regional scale remains a largely unexplored research field, especially in the Pyrenees. A combined pollen, stomata, non-pollen palynomorphs (NPPs) and macrocharcoal study was carried out at three nearby alpine and subalpine peat basins from a relatively small territory (ca.1700 ha) at the Madriu valley (Andorra, eastern Pyrenees), following a fine spatial-resolution strategy. The purpose was to test the suitability of high altitudinal palaeoecological sequences when reconstructing past small-scale land-use variability. The palaeoecological results of those peat records are compared and further integrated with archaeological local data, and together underline the marked complexity of high mountain land-use system over the Holocene period. Main phases of micro-regional land-use and landscape variability can be distinguished from the middle Neolithic to the early Bronze Age and from the Roman Period to the Modern Era. Conversely, several phases of homogeneous landscape management are distinguishable during the early Neolithic, and from the late Bronze to the late Iron Age. Results drawn from this study show that landscape variability is not necessarily connected to topographic or climatic parameters, and underline the role of social, economical and cultural parameters in the land-use organisation and the landscape shaping of high mountain spaces since Prehistory. 相似文献
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Ana Rull Suárez 《International Journal of Cultural Policy》2013,19(3):360-362
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V. Kuznetsov F. Maksimov A. Zheleznov G. Cherkashov V. Bel’Tenev L. Lazareva 《Geochronometria》2011,38(1):72-76
A radiochemical study was carried out on massive sulfides from Semyenov hydrothermal district at the Mid-Atlantic Ridge. New
and published results provide evidence that 230Th/U ages obtained for massive sulfides are reliable. The sulfide deposits from the West, North-West, North-East, and East
hydrothermal sites at the Semyenov hydrothermal district were formed between ∼124 ka and ∼37 ka ago. The hydrothermal activity
might have started in the eastern part of the district and moved to the west by episodic ore formation. 相似文献