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991.
The article analyzes Russian—Ottoman relations from the territorial point of view. The author traces stages of these relations and shows how the attitudes of Russian power and society to the problem of southward expansion changed through centuries. She concludes that in the nineteenth century Russia ceased to be interested in the military solution of the “Eastern Question” and it was often the pressure of European international affairs that made the country wage war against its southern neighbor.  相似文献   
992.
993.
This article examines the heritage destruction undertaken by the Islamic State (IS) in Iraq and Syria. To date, their iconoclasm has been mostly characterised either as acts of wanton barbarism devoid of religious or political justification, or as a cynical performance designed as a mass media spectacle. Drawing on a systematic analysis of two key IS propaganda outlets – their on-line magazine, Dabiq, and the various slick films released by Al-Hayat – this article argues that the heritage destruction perpetrated by the IS are not only situated within a carefully articulated theological framework and key to the creation of a new and ideologically pure ‘Islamic State’, but that they are also constituted by several complex layers of religious and political iconoclasm. To demonstrate, this article documents the iconoclasm undertaken by the IS along two key axes: Symbolic Sectarianism (Shia and Sufi mosques and shrines); and Pre-Monotheistic Iconoclasm (ancient polytheistic sites). Attacks on key sites within these categories, such as the Sayyida Zaynab shrine in Damascus or the Mosul Museum, not only adhere to their religious and political framework but also serve broader geo-political agendas and are attacked as proxy targets for their physical and ideological opponents.  相似文献   
994.
The use of renewable hydraulic energy sources by mankind most likely has its origins in the development of the watermills. To understand the functioning of these mills, this article first reviews, through the analysis of different bibliographical sources, the technical evolution of the machinery used since the appearance of the first watermills to grind cereal grain in the 1st century bc.

Secondly, a particular area of the south-west of Spain, Alcalá de Guadaíra, has been selected for study, whose strategic location as well as its hydrological characteristics gave rise, firstly, to an intensive milling industry, and, later, a famed baking industry, from the late Middle Ages until recent decades. The huge development of these two industrial activities has made Alcalá de Guadaíra an exceptional example in Spain, with 40 watermills in the early 18th century.

Extensive work on site allowed the analysis of the state and types of watermills that still exist in this area, identifying their similarities and differences. Unfortunately, after they fell into disuse, only 28 of these mills remain today; 12 of them are in a relative good state of preservation, seven in an alarming state of ruin and, of the other nine, only some unrecognisable vestiges remain. Some of these mill buildings have been restored recently, although their machinery is missing. Only from old photographs or by visiting mills restored in other areas is it possible to determine how these watermills worked.

Due to the lack of financial resources to carry out physical restoration of the industrial heritage missing in these flour mills, a virtual model of one of them has been developed. This work provides, at least virtually, a reconstruction of the traditional mills which helps promote technological studies and shows how they worked, as part of virtual exhibitions. In addition, a computer application of augmented reality has been developed that any visitor can install on a mobile device to display the virtual reality of the machinery, generated by 3D models, so they can visualise the physical reality that they would have found in the mill.  相似文献   

995.
Liang, J., Shih, C. &; Ren, D., October 2017. New Jurassic predatory cockroaches (Blattaria: Raphidiomimidae) from Daohugou, China and Karatau, Kazakhstan. Alcheringa 42, 101–109. ISSN 0311-5518.

Two new species and a new combination in a new genus of predatory cockroaches, Falcatusiblatta gracilis and F. qiandaohua from the Middle Jurassic Jiulongshan Formation of Daohugou, China and F. karatavica (Vishniakova) comb. nov. from the Upper Jurassic Karabastau Formation of Karatau, Kazakhstan are described within Raphidiomimidae. The new taxa are distinguished by the presence of a very long ovipositor (plesiomorphy) and elongate cerci with heteronomous articles and forewing markings with irregular patch-like shapes of light and dark patterns (autapomorphies).

Junhui Liang [], Tianjin Natural History Museum, 31 Youyi Road, Hexi District, Tianjin, 300203, PR China; Chungkun Shih? [], College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing, 100048, PR China; Dong Ren [], College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing, 100048, PR China. ?Also affiliated with: Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, USA.  相似文献   
996.
Detailed compositional and technological analysis of a large assemblage of prehistoric ceramics from numerous sites situated within the Peak District National Park has been used to explore the settlement patterns, societal structure, mobility and interaction of the populations that inhabited this area during the Early Bronze Age to Early Iron Age. A surprising pattern emerges of the widespread dominance of a single, geographically restricted temper type, which appears to have been transported and mixed with locally procured clay and used to produce pottery at numerous different sites. The distribution of this and several other compositional groups are defined via thin‐section petrography and compared to raw material field samples. The resulting patterns are used to assess the validity of previous theories about prehistoric life in this region during the third to first millennia bc .  相似文献   
997.
Lead analysis of tooth enamel from individuals recovered from a Viking Age burial pit in southern England provides further evidence for their childhood origins outside Britain. All except one of the men have very low Pb concentrations that exclude anthropogenic Pb exposure. Strontium and oxygen isotope compositions identify a core group of men who have Pb isotope compositions of 208Pb/206Pb = 2.065 ± 0.021 (n = 20, 2SD) that, when compared with data from European soils, appear to exclude a childhood in the Scandinavian countries of Norway, Sweden and Finland, whereas areas of Northern continental Europe cannot be excluded.  相似文献   
998.
Archaeological excavations carried out in Early Iron Age Vetulonia (northern Tuscany, Italy) brought to light a funerary urn particularly noteworthy for the presence of an unusual decoration obtained by plastering the vase surface with an organic dark grey substance, on which metal strips were originally fixed. In order to reveal the origin of such coating, it was chemically studied by gas chromatography coupled with mass spectrometry (GC/MS). Chemical analysis not only revealed that birch bark tar was used as coating/adhesive material for the manufacture of the urn, but also allowed us to discuss the significance of the vessel in terms of eco‐technological knowledge and possible cultural connections on a large geographical scale.  相似文献   
999.
1000.
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