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   183篇
  免费   16篇
  199篇
  2024年   1篇
  2023年   4篇
  2022年   1篇
  2021年   1篇
  2020年   7篇
  2019年   11篇
  2018年   27篇
  2017年   25篇
  2016年   19篇
  2015年   12篇
  2014年   11篇
  2013年   39篇
  2012年   4篇
  2011年   8篇
  2010年   6篇
  2009年   8篇
  2008年   1篇
  2007年   1篇
  2004年   3篇
  2002年   1篇
  2001年   1篇
  2000年   1篇
  1999年   1篇
  1997年   2篇
  1996年   1篇
  1995年   1篇
  1993年   1篇
  1992年   1篇
排序方式: 共有199条查询结果,搜索用时 0 毫秒
81.
In the year 1916 Enrique Díaz Retg, a staff journalist working for the Spanish newspaper El Diluvio, extremely popular among Barcelona’s working class readers, was assigned to report from the Italian front. Following an invitation from the Italian Foreign Office, he was granted permission to visit war zones under the control of the Italian army. During this journey, which began on 5 September and concluded in Rome on the 22nd, he traveled with two other famous Spanish reporters, Ramón Pérez de Ayala and Eduardo Gómez de Baquero. Comparing the articles produced by the three journalists allows us to perceive the main distinctive features of Enrique Díaz Retg’s work. From an ideological point of view, his articles reveal a bias in favor of the Latin race and in them he calls for Mediterranean nations to unite, openly inviting the Spanish authorities to enter into war against the barbaric German enemy. In doing so, he contributed to widening the social gap that in the years to come would increasingly alienate the working class from the institution of monarchy and the Catalan elites.  相似文献   
82.
New excavations at Border Cave use high-resolution techniques, including FT-IR, for sediment samples and thin sections of micromorphology blocks from stratigraphy. These show that sediments have different moisture regimes, both spatially and chronologically. The site preserves desiccated grass bedding in multiple layers and they, along with seeds, rhizomes, and charcoal, provide a profile of palaeo-vegetation through time. A bushveld vegetation community is implied before 100,000 years ago. The density of lithics varies considerably through time, with high frequencies occurring before 100,000 years ago where a putative MSA 1/Pietersburg Industry was recovered. The highest percentage frequencies of blades and blade fragments were found here. In Members 1 BS and 1 WA, called Early Later Stone Age by Beaumont, we recovered large flakes from multifacial cores. Local rhyolite was the most common rock used for making stone tools, but siliceous minerals were popular in the upper members.  相似文献   
83.
Viscardo’s Letter to the Spanish Americans inaugurates a tradition of nonconformist political writing against Spanish colonial rule during the second half of the eighteenth century, a period characterized by the Crown’s attempt to reorganize several aspects of the colonial administration. As an ex-Jesuit living in exile after the expulsion of the Society of Jesus from all Spanish territories in 1767, Viscardo had a political as much as a personal motive in designing a project that would cut the colonial ties between Spain and the New World. His plans for emancipation included the instauration of a monarchical form of government, but his design was out of touch with reality and would have hardly been taken seriously by the inhabitants had a British-backed expeditionary force reached the coasts of Chile and Peru, as he had planned. While Viscardo’s Letter may have stirred a sense of creole patriotism some years after his death, the political scruples of the ancien regime based on social privileges and racial distinctions were too strong to be dismantled by mere ideals of freedom, justice and equality. Thus, effective political participation was restricted to the creole elite, whom Viscardo saw as the legitimate guarantor of social order and economic prosperity.  相似文献   
84.
Los obstáculos impuestos a los americanos para entrar a la Compañía de Jesús fueron una constante en la Nueva España durante el generalato de Claudio Acquaviva (1581–1615). Si bien aquellos pueden ser considerados como la prolongación de un debate que había comenzado con la llegada de los primeros franciscanos en 1524, y como parte de tensiones que existían a nivel global sobre la viabilidad de aceptar no europeos en las órdenes religiosas, esta cuestión evolucionó conforme a los nuevos estándares de la Iglesia postridentina, y a los cambios sociales y políticos del virreinato. Las tensiones provocadas por diversos grupos sociales emergentes al reclamar sus propios espacios dentro de la sociedad novohispana, ocasionaron que la discusión en torno a la creación de un clero indígena se subsumiera en una serie de pugnas entre diferentes facciones de la Compañía de Jesús, bajo la sombra de los poderes de la Corona española y Roma. Así, en una época en donde la Compañía de Jesús se debatía sus prioridades apostólicas con la disyuntiva colegios/misiones, el caso de la Provincia de México nos muestra cómo este problema estuvo inmerso en una lucha de bandos por los puestos de poder.  相似文献   
85.
86.
Chert from the limestones and marly limestones of Castelltallat Formation (Ebro Basin) was widely used throughout prehistoric times in north-eastern Iberia to produce stone tools due to its properties and accessibility. A rough estimate indicates that this rock—either as raw material or as lithic products—was distributed mainly to the north of the outcrops, over an area of 6000–8000 km2. However, other rocks in the area have similar characteristics which can lead to confusion in the interpretation of its prehistoric use and distribution. In order to establish useful archaeometric criteria for differentiating this chert from other similar, the Castelltallat chert is characterised in petrographic, mineralogical and geochemical terms. The chert nodules are found to be homogenous at the macroscopic and microscopic level, with a significant presence of bioclasts, thus indicating they might be formed in a freshwater lake environment by the early diagenetic replacement of carbonates in shallow waters. The mineralogical composition is homogeneously uniform and of a flint type, characterised by an almost exclusive predominance of quartz, without any opaline phases, and a variable proportion of moganite. The iron oxide content is very low, whereas its chemical composition is unusually high in uranium which correlates positively with carbonate content and negatively with silica. Archaeometrical parameters are provided to reach a proper identification of tools knapped with this chert. This way, chert from Castelltallat Formation turns out to be a valuable lithological marker to evaluate the range of mobility of the human groups who lived in the north-eastern Iberia and their contacts with neighbouring areas.  相似文献   
87.
One hundred and eleven samples from the important Servilia Roman tomb have been analysed for the first time by Raman spectroscopy, resulting in a complete characterisation of the pigment palette used for its remarkable wall paintings: 73 different pigment mixtures have been identified for the composition of its 11 colours and their tonalities. Dyer’s weld, an ancient organic yellow pigment, which was described by Vitruvius, has been identified and characterised for the first time in Roman wall paintings. Distinctive Raman spectroscopic signals which differentiate between haematite and caput mortuum (a violet colour from haematite which has been subjected to thermal treatment) are also reported. The use of the very expensive lazurite for a balance relates the importance of this otherwise ordinary instrument with psychostasia (the human soul weighing process) and is not found elsewhere in the tomb. The distribution of white minerals alone or in admixture is not related to any particular colouring pigment or figure; this possibly indicates that there was no specific use for each white mineral and that several craftsmen worked on the paintings, perhaps in different periods, or that the frescoes have been subjected to unrecorded restoration. We conclude that Raman spectroscopy is a valuable analytical technique for the unambiguous identification of mixtures of both organic and inorganic compounds, to study the degree of mineral crystallinity and for identifying treatment. These data are relevant for the holistic interpretation of the artwork in its historical, economical and social context.  相似文献   
88.
Cyclic pore pressure response of low plastic fines is examined with regard to factors influencing overall behavior of such soils under repeated loads. A model for pore pressure generation under repeated loads and another model for relationship between cyclic pore pressure and straining are proposed. The models are developed in consideration of an extended database generated through a comprehensive literature review. The models are evaluated based on the comparisons between predicted and measured pore pressure responses.  相似文献   
89.
90.
This article examines the borderlands between transgender MTF (male‐to‐female) and gay male communities in Latina/o Miami through an analysis of the participation of Latinas in the Transsexual Action Organization (TAO). Previous research suggests that Cuban and Cuban American gay male culture have historically been associated with gender transgressive behaviour and identity. Because of this, it is often unclear how to distinguish between what is gay male/homosexual expression and transgender expression. If outward gender manifestations that we now call ‘transgender’ were understood in other historical and cultural contexts as ‘homosexual’, how do we label those manifestations today? By labelling them as homosexual are we simply reinscribing the marginalisation of transgender individuals? On the other hand, by labelling them as transgender are we imposing a contemporary category and therefore performing another kind of intellectual violence? In order to address these questions, I analyse a Latino/a organisation that explicitly labelled itself ‘transsexual’. TAO was an early transsexual rights organisation founded in 1970 by Angela Douglas in Los Angeles which moved to Miami Beach, Florida in 1972. Drawing on the organisation's publications, Moonshadow and Mirage Magazine (1972–75), and Douglas's self‐published autobiographical texts, Triple Jeopardy: The Autobiography of Angela Lynn Douglas (1983) and Hollywood's Obsession (1992), I analyse the rarely discussed participation of Latinas in the organisation.  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