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排序方式: 共有105条查询结果,搜索用时 78 毫秒
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An experimental approach in order to investigate the possibility that some Italian limestones were used for the production of Roman Cement is proposed. Three types of Pietra Alberese, a marly limestone used since Roman times for the production of “lime” in Tuscany (Italy), were selected. By burning of these stones, specimens of binders were realized. The characteristics of these binders were compared with the binder obtained by burning a French marly limestone commercially used for the production of Roman Cement.

All samples of carbonate stones were preliminarily characterized from the chemical, mineralogical, and petrographic point of view. The colorimetric coordinates were measured on both rock samples and hardened binder samples. The analysis carried out shows that Pietra Alberese with an high content of clay minerals develops a similar microstructure with respect to that developed by the French marly limestone used for the production of Roman Cement.  相似文献   

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Rita Barbuto 《Modern Italy》2014,19(2):161-168
Since 2001 DPI Italia, the Italian section of Disabled People's International, has played an important role in a series of research projects in the European Commission's Daphne Programme on violence against women with disabilities. Several different types of violence have been identified, from sexual abuse to removal of women's control over their environment to invasion of their privacy in healthcare contexts to control of their reproductive capacity, particularly of women with intellectual disabilities. In the light of these projects, and of the CRPD's recognition of the multiple discriminations experienced by many women with disabilities, the article argues for a shift away from an ethics of care and dependency towards one of equal reciprocal relations between disabled women and others and to a bioethics grounded not in exceptional need but in everyday life. Peer counselling among disabled women is particularly important in effecting this shift.  相似文献   
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This article attempts to isolate the structural characteristics that affect the resilience of a regional economy. It focuses on the role played by related/unrelated variety and differentiated knowledge bases as drivers for regional resilience and originally explores their interdependences. Italy is the empirical setting, and Italian local labour systems the unit of analysis. Regional resilience is measured as growth of the employment rate after the Great Recession that began in 2008. Results confirm the importance of related variety and of differentiated knowledge bases as drivers for regional resilience. We found support of the creative capacity of culture argument, providing evidence that a moderate concentration in symbolic knowledge-based economic activities contributes to resilience. Synthetic and analytical knowledge-based activities provide positive and no support to regional resilience, respectively. Finally, the relatedness of the symbolic knowledge-based activities increases regional economic resilience. Some policy implications are then derived from these findings.  相似文献   
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Cutmarks found on the fossilised bones of butchered animals provide direct evidence for the procurement of meat through technological means. As such, they hold some of the oldest available information on cognitive ability and behaviour in human evolution. Here we present a new method that allows a three-dimensional reconstruction of cutmark morphology and the quantification of profile parameters. We have tested this new technique on cutmarks that were experimentally inflicted on a pig rib using a steel knife and an un-retouched flint flake at different angles. The method allows for the cross-sectional shape, the sharpness and depths of the resulting cutmarks to be quantified. The data show that knife mark sections are characterised by a V-shape or √-shape depending on the inclination of the knife. Cutmarks produced with the flint flake were less clearly defined and generally less sharp than those produced by the knife. We discuss the method's potential to provide new information on butchery technique and cognitive abilities developed by the human lineage, from the earliest tool-using hominins through to modern Homo sapiens.  相似文献   
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Many socio‐economic changes occurred in southern Europe during the first millennium BC. In north‐eastern Iberia societies evolved from the small‐scale local groups of the Late Bronze Age to the more complex societies of the Iron Age. Together with a diversity of material changes (detected in pottery, agricultural techniques, architecture, etc.), a new ritual manifestation is attested in the Ancient Iberian Period (about 550 BC), lasting until some time after the Roman conquest. This consisted of sheep and goats (among other species) being carefully deposited below the floors of some domestic buildings. In this article the characteristics of these associated bone groups are described and their significance is discussed.  相似文献   
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ABSTRACT

New technology offers extremely novel and useful ways of exploring ‘the everyday’ of young people’s lives and can include videos, live feeds filmed on social media, text messages, email communication, and messaging or headset communication on gaming consoles. The significance of mobile communication in the lives of young people means that digital diaries offers alternate ways of implementing PhotoVoice methods. This viewpoint proposes the ways in which digital diaries are a useful method of collecting data in research with young people and highlights the challenges and ethical concerns that must be considered when using this method.  相似文献   
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