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41.
Marsola, J.C.A., Grellet-Tinner, G., Montefeltro, F.C., Sayão, J.M., Hsiou, A.S. & Langer, M.C., 2014. The first fossil avian egg from Brazil. Alcheringa 38, 563–567. ISSN 0311-5518.

In contrast to the rich record of eggs from non-avian dinosaurs, complete eggs attributable to Mesozoic birds are relatively scarce. Nevertheless, several well-preserved specimens have been discovered over the last three decades revealing functional and phylogenetic characters that shed light on the breeding strategies of extinct birds. Here we report the first fossil avian egg from Brazil, which was discovered in Upper Cretaceous strata of São Paulo in the southeastern part of the country. The taxonomic identity and structural features of the biomineralized tissues were determined using a combination of Scanning Electron Microscopy, Wave Dispersion Energy analyses and Computed Tomography. These show that the 125.5-μm-thick shell of the 31.4?×?19.5?mm egg incorporates three structural layers of similar thickness with both prismatic and aprismatic boundaries. Close similarity between the Brazilian bird egg and those of enantiornithines from the Upper Cretaceous Bajo de la Carpa Formation (Río Colorado Subgroup) of Argentina advocates affinity with basal Ornithothoraces. Furthermore, coherency of their depositional contexts might imply a compatible preference for breeding and nesting environments.

Júlio Cesar de A. Marsola [], Annie Schmaltz Hsiou [] and Max C. Langer [], Laboratório de Paleontologia de Ribeirão Preto, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, Ribeirão Preto, São Paulo state, 14040-901, Brazil. Gerald Grellet-Tinner [], Centro Regional de Investigaciones La Rioja—Consejo Nacional de Investigaciones Científicas y Técnicas, Entre Ríos y Mendoza s/n, 5301 Anillaco, Argentina; Orcas Island Museum, PO Box 134, 181 North Beach Road, Eastsound, WA 98245. Felipe C. Montefeltro [], Departamento de Zoologia, Universidade Estadual Paulista, Avenida 24A 1515, Rio Claro, São Paulo State, 13506-900, Brazil. Juliana M. Sayão [], Laboratório de Diversidade do Nordeste, Núcleo de Biologia, Centro Acadêmico de Vitória, Universidade Federal de Pernambuco, Rua do Alto do Reservatório s/n, Bela Vista, Vitória de Santo Antão, Pernambuco state, 52050-480, Brazil. Received 18.12.2013; revised 30.4.2014; accepted 18.5.2014.  相似文献   
42.
As Northern Ireland transitions out of conflict, increased attention is being paid to the role heritage can play in building peace across society and developing a more sustainable future. Recent archaeological investigations at Dunluce Castle have uncovered elements of the site’s Gaelic past and the remains of an early seventeenth-century town built immediately prior to the Crown-sponsored Plantation of Ulster. The project included a dynamic programme of community engagement and outreach that created opportunities to work as a group in the embodied act of recovering the physical past. This formed a space in which to challenge aspects of the region’s contested past and facilitated the renegotiation of accepted local histories and existing identity constructs.  相似文献   
43.
During the pre‐reform era, Chinese state‐owned enterprises (SOEs) operated not only as firms, but also as mini‐welfare states, providing employees with lifetime employment, inexpensive housing, free health care, and pensions. Since China’s market transition began in the late 1970s, however, SOEs have had to bear increasingly heavy burdens for welfare provisions to their employees. The steep increase in welfare spending has not only eroded the base of state revenue, but has also impeded further SOE reforms. To lighten welfare burdens upon SOEs and to remove institutional obstacles to marketization and privatization embedded in the existing welfare system, the Chinese state has imposed many welfare reforms aimed at shifting responsibilities for welfare provision from SOEs to a combination of government, enterprises, communities, and individuals. This article examines the belated welfare reforms in China’s state sector and their impact upon the reform of SOEs. It finds that reform implementation has been sluggish. To achieve the policy goal of welfare reforms, high degrees of state autonomy and capacity are needed.  相似文献   
44.
我国新疆出土于唐代元和年间的“坎曼尔诗签” ,在70年代初期于北京展出后 ,学术界引起很大震动 ,但也产生了一些不同观点的争论。本文围绕“诗签”的真伪问题 ,对主要观点作了述评  相似文献   
45.
顾伊  陈淳 《文物世界》2001,(1):18-24
化遗产保护是一个国际性的课题,无论发达国家还是第三世界国家,在经济发展中都会面临如何妥善保护本国历史遗迹和物的严峻问题。而世界各国在处理发展和保护这对矛盾时,都有根据自己的国情而采取的一些成功经验。在世界经济一体化的过程中,各国也开始对自己的各种规章制度进行调节,与国际接轨,以适应日益频繁和密切的国际交流。而他国的各种成功经验也为我国所重视并加以科学的借鉴。  相似文献   
46.
The Imperial Dream: The British Commonwealth and Empire 1775–1969 by Edward Grierson. London: Collins, 1972. Pp. 320. £2.50. It is a pity that no one has troubled to read the proofs; the bibliography is peppered with spelling mistakes.

Commonwealth: A History of the British Commonwealth of Nations by H. Duncan Hall, with an introduction by Sir Robert Menzies. London, New York, Cincinnati, Toronto, Melbourne: Van Nostrand Reinhold Co., 1971. Pp. xxxvi+1015, maps, illustrations. £10.00.  相似文献   
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Emerging from a participatory research project, this article draws on in-depth, semi-structured interviews, and home tours with trans masculine individuals and couples in the US Northeast to examine how homes come to function as spaces of both grounding and disidentification for transmasculine participants. In this article we argue that photographs and items of décor–particular, meaningful objects in trans homes–function to materialize the queerness of transition, and thus constitute a material expression of queer time. They provide a means for trans folks to acknowledge the queerness of the multiple life course temporalities co-present in the intimacy of private space, and we suggest that through these objects trans bodies engage in a process of becoming through moments of ‘co-substancing’ with the objects that are cherished, displayed, or hidden, in trans homespaces. In this article we suggest that objects on display in the home allow not just for a stretching of normative temporalities of the self, but also for the performance of home space as trans. We argue that more scholarly attention needs to be paid to the everyday, mundane geographies of transgender lives.  相似文献   
50.
The small body of scholarship that examines the intersection between forced displacement and physical disability draws important attention to the material difficulties simultaneously disabled and displaced people experience. Instead of focusing on disability as a condition lived against the spatial backdrop of forced displacement, this paper approaches disability and displacement as mutually referential spatial conditions. Based on fieldwork with internally displaced landmine victims in Colombia’s Magdalena Medio region, this research highlights how the intersection between physical impairment and forced displacement produces both disabling spatial imaginaries of fear as well as painfully embodied rhythms of daily life. Nonetheless, this paper draws attention to urban agricultural projects’ enabling potential to produce grounding rhythms of labor for landmine victims. Finally, this paper suggests that contexts of forced displacement require close consideration of spatial imaginaries of fear as well as experiences of direct structural violence as key factors underpinning the social production of disability.  相似文献   
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