首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   213篇
  免费   15篇
  2022年   3篇
  2020年   3篇
  2019年   5篇
  2018年   22篇
  2017年   13篇
  2016年   15篇
  2015年   8篇
  2014年   16篇
  2013年   47篇
  2012年   7篇
  2011年   11篇
  2010年   5篇
  2009年   5篇
  2008年   6篇
  2007年   1篇
  2006年   1篇
  2005年   3篇
  2004年   4篇
  2003年   2篇
  2002年   5篇
  2001年   4篇
  2000年   2篇
  1999年   1篇
  1998年   3篇
  1997年   4篇
  1996年   1篇
  1995年   4篇
  1994年   3篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1990年   3篇
  1989年   2篇
  1988年   4篇
  1987年   4篇
  1981年   3篇
  1979年   1篇
  1969年   1篇
排序方式: 共有228条查询结果,搜索用时 15 毫秒
91.
92.
The recently found metal casting mould from Gaj O?awski (SW Poland) was designed for the production of socketed axes typical for later stages of the Bronze Age in Poland (ca. 1100–900 bc). This unique artefact is a half of a durable, two-piece wedge-shaped mould and measures 17.5?×?7.2?×?4.0 cm. The surface of the mould is covered copper oxides and carbonates, and the remnant of beeswax was found on its inner surface. The metal forming mould consists of cored dendrites of Cu-dominated (Cu >96.5 wt%, up to 2.2 wt% Sn) and Cu impoverished (Cu ~86.0 wt%, Sn ~9.4 wt%, some Sb, As and Ag) end compositions and volumetrically subordinate α?+?δ eutectoid. The “as cast” structure of the metal shows that the mould was never used for molten metal casting. Since this kind of moulds was used for mass casting of metal, the Gaj O?awski one was probably never used, and the beeswax is the remain of its coating. This is the first remain of the Bronze Age beeswax described in metallurgical context in Europe.  相似文献   
93.
94.
95.
Abstract

This article examines the spatial, and especially scalar, dimension of feminism in a contemporary French anarchist organisation. This perspective is contextualised by a reminder of the role of feminism in the political history of anarchism and of the role of the spatial dimention through the question of anarchist federalism. The empirical study is based on research conducted through participant observation within the organisation Alternative Libertaire between 2006 and 2012. The problem to be addressed is the question of whether anarchist women succeed as well as they claim in bringing into question, in their promotion of feminism both inside the organisation and outside, the centrality of Paris in favour of an anarchist federalism. For this reason two scales or levels are studied: the national level and the local level of the city. The city of Paris is treated as both the national capital and as a locality.  相似文献   
96.
The aim of this paper is to describe the creation of a method to apply digital image treatment, consisting of a combination of filters and algorhythms, to prehistoric rock carvings, to enhance the information obtained from them. In the experimental phase a study was made of a laboratory piece and two highly valuable pieces of cave art from the Tamanart Valley in Morocco and the Casares Cave in Guadalajara, Spain. The results clearly demonstrate the potential of the proposed digital methodas information was obtained that could not have been achieved by the traditional techniques.  相似文献   
97.
In this paper, we propose the application—for the first time in the Mediterranean area—of the combination of the study of chemical residues in floors and ceramics, with the aim of providing information about the activities carried out in archeological buildings. We chose the Garum Shop at Pompeii to test the method. In fact, due to the peculiarity of this archeological context, it provided an ideal case in which the activities performed are in part known, and the ceramic vessels recovered are still in situ. Floor samples were studied by means of spot tests developed in Mexico aimed at identifying the presence of phosphates, fatty acids, and protein residues, while the organic residues preserved in the ceramic matrix of amphorae, dolia, and other ceramic vessels were studied by gas chromatography coupled with mass spectrometry. Moreover, we integrated the data obtained with specific studies directed at better identifying the solid residues found inside two of the amphorae studied: botanical studies of fruit stones recovered in a Dressel 20 amphora and the characterization of the lime preserved in an African amphora. The research allowed for the identification of the traces of some of the activities performed, such as cooking and producing garum in the floors of the building, and the use and re-use of amphorae and dolia before the Vesuvian eruption.  相似文献   
98.
The study focuses on the characterization of polychromy on limestone sculptures from Cyprus, attributed to the Cypro-Archaic—end of the Hellenistic periods. Polychromy components were identified by integrating digital microscopy, imaging under ultraviolet (UV) light, visible-induced luminescence (VIL), X-ray fluorescence spectroscopy (XRF) and fibre optics reflectance spectroscopy (FORS). Data acquisition was performed directly in exhibition rooms at the Cyprus Museum (Nicosia) and the Paphos District Archaeological Museum (Paphos). Among the identified materials, there are iron-containing (red, yellow, green) and copper-containing (green and blue) pigments. The precision of pigment identification by non-destructive techniques is discussed, and specific pigment names are proposed: red iron oxide, yellow iron oxide-hydroxide, green earth and Egyptian blue. Interesting results were obtained by VIL, which allowed identifying traces of Egyptian blue otherwise undetectable with the naked eye. Complementary, this study discusses advantages and problems of combined and separate use of portable XRF and FORS, raising the question of their complementarity and interchangeability for the purposes of pigment identification.  相似文献   
99.
In a previous article, we presented an innovative method to analyze cut marks produced with metal tools on animal bones from a metrical and tridimensional perspective (Maté-González et al. 2015). Such analysis developed a low-cost alternative technique to traditional microscopic methods for the tridimensional reconstruction of marks, using their measurements and sections. This article presents the results of an experimental study to test this photogrammetric and morphometric method for differentiating cut marks generated with metal, flint, and quartzite flakes. The results indicate statistically significant differences among cut marks produced by these three types of raw material. These results encourage the application of this method to archeological assemblages in order to establish a link between carcass processing and lithic reduction sequences on different raw materials and also to define the kind of tools used during butchery.  相似文献   
100.
This study explores how the everyday geographies of city life and families’ access to social networks in the neighbourhood influence families’ school choices. The data consist of thematic interviews with parents of 8–14-year-old children (n?=?170) in three urban areas located in the cities of Paris (France), Milan (Italy) and Espoo (Finland) and are analysed via qualitative content analysis. The findings indicate that the families’ access to local social networks influences the reasoning behind school choice to the local school. The children’s relationships with other children and adults in the neighbourhood are considered important, but additionally, the parents’ networks with other parents in the area, mediated by the school, play their role. School choices as practices should therefore be analysed not merely as choices of an institution, as they comprise various aspects concerning the surrounding neighbourhood as a physical and social space.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号