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1.
张萍 《攀登》2007,26(3):161-163
电视事业是党和人民的喉舌,我国电视事业的发展要坚持为社会主义和为人民服务的方向,坚持以群众性为重要特征,始终保持电视事业与人民群众的血肉联系。  相似文献   
2.
The studies on the finishing technique of the stone monuments in Persepolis (Iran) are part of the archaeological project jointly launched in 2008 by Iran and Italy, named ‘From Palace to Town’. The first experimental results, obtained on a very limited number of samples, revealed that the Achaemenid builders and sculptors used a white pigment, a kind of bone white, calcium fluorapatite, obtained by burning animal bones, to hide the dark grey colour of the stone. In order to verify these unexpected results, a new campaign was implemented to analyse a much larger number of samples. XRF spectrometry, a non‐destructive technique, was used and the experimental results were further elaborated by PCA. The presence of a white superficial layer was confirmed, and the use of fluorapatite was confirmed as well, but only on monuments attributed to the Xerxes period or later, while in the earlier monuments the white layer was obtained using gypsum.  相似文献   
3.
The chemical compositions and microstructures of some 35 faience objects from Egypt spanning the period from the Middle Kingdom through to the 22nd dynasty are determined using analytical scanning electron microscopy. Replicate faience beads glazed in the laboratory using the efflorescence and cementation methods are similarly investigated. In efflorescence glazing, there appears to be preferential efflorescence of soda over potash, and in cementation glazing, preferential take up of potash over soda into the glaze. These data are then used to try to infer the raw materials and methods of glazing employed in the production of the ancient faience. The glaze/glass phases present in the faience differ significantly in composition from that of New Kingdom glass. This could be due either to the use of different plant ashes or to changes in the composition of the plant ashes during the production of faience and/or glass. Although it is only rarely possible to determine with certainty whether ancient faience was glazed by efflorescence, cementation or application, the observed microstructures provide an indication of the approach adopted to achieve desired performance characteristics such as strength.  相似文献   
4.
后工业社会中的大众传媒,尤其是电子传媒极大地影响着文学的生产、传播和消费.文学传媒化、商业化、大众化的趋势使人们不得不重新思考文学的走向与未来.大众传媒不仅是文学的工具,它也是文学本身不可分割的一部分.本文通过对梦枕貘<阴阳师>系列的个案分析,阐明日本当代文学和大众传媒之间的互动关系.  相似文献   
5.
美国学术界一般认为,从三K党组织成立肇始,共经历三次连续的运动。第三次三K党运动开始于二战结束,持续至今。为了更加有效地迷惑民众,这一时期三K党采取的手段之一就是革新了该组织的宣传方略,不遗余力地利用美国当代大众传媒来宣传和标榜自己,并完成了由印刷媒体到电子媒体的转变。由于大众传媒和大众文化的密切关系,这种大众传媒方略直接影响到美国大众文化的变异,导致美国当代大众文化掺杂着三K党所宣扬的以白人种族主义为核心的消极成分,致使美国社会与文化的重构与异化。美国民众尤其是青年群体,深受此种文化理念和认知的麻痹与毒害:美国当代社会种族主义思潮的泛滥、白人至上主义运动持续、仇恨犯罪率的提升、暴力文化形式的盛行等现象便是例证。第三次三K党运动的大众传媒方略以及大众文化异化极具隐蔽性,由此导致的危害亦不容低估。  相似文献   
6.
运用科学技术方法对清代珐琅的研究   总被引:4,自引:0,他引:4  
作者运用原子发射光谱、扫描电子显微镜、偏光显微镜和金相显微镜,对故宫博物院藏清代珐琅残片进行了实验分析。研究中.对构成珐琅的硅酸盐材料、铜材料、焊接材料以及镀金层的元素组成进行了测试;对珐琅残片断面的焊接层和镀金层的微观形貌、焊接层的金相组织进行了观察和鉴别。在此基础上,运用结晶学、矿物学、金属学和金相学的基础理论对珐琅原料种类、各种原料的作用、珐琅料的熔制与烧蓝、铜材料与焊接材料的合金属性、焊层的金相组织、掐丝珐琅的烧制工艺等问题加以探讨,试图藉现代科技手段揭示清代珐琅所包含的科学技术内涵。  相似文献   
7.
The detection and identification of protein residues from archaeological artefacts has been the subject of considerable controversy over the past two decades, this controversy spurring the application of a range of different analytical methods. Part of the debate surrounds the ability of the methods to uniquely identify original proteins. Another is the apparent contradiction between the ease of extraction in the laboratory of residues that have managed to survive in sediment over millennia; some studies use simple solvents including water, whilst others claim that efficient extraction requires the destruction of the artefact.Desorption electrospray ionisation mass spectrometry (DESI-MS) offers the potential to directly analyse proteins bound to the surface of artefacts. The method permits desorption of analytes under ambient conditions directly from a wide range of surfaces with little or no sample preparation. This has already led to its application in a range of areas, including forensic analysis of trace levels of narcotic drugs. It does not require destruction of the artefact (e.g. by drilling or dissolution) and can work in concert with other methods (for instance it could be used as a screening tool prior to lipid extraction).Here we report the construction of a DESI-MS interface and consider the potential of the method to contribute to the debate surrounding the preservation of proteins on artefacts. The DESI-MS interface was fitted to a conventional ion trap mass spectrometer and tested using peptides and proteins artificially applied to the surface of flint flakes and potsherd samples. A range of intact proteins was analysed; the DESI interface identified test proteins up to a maximum molecular weight of approximately 20 kDa. Peptides generated from these and larger proteins could be detected using DESI-MS following tryptic digestion in situ. The collected data allowed identification of the originating proteins. The potential applications to archaeological science of this new analytical tool are discussed.  相似文献   
8.
明墓出土的历书,粘连固结成块,脆硬易于折断。通过实验分析研究,探明其主要原因可能是木质素选择性地吸附的钙铁离子与蛋白质的分解物形成复杂物质,沉积在纸上,渗入书内所致。故揭取该历书的关键是去除钙离子,EDTA二钢,碱性过氧化氢、气相二氧化硅等的分步处理,使脆硬的纸张软化,再逐页分离揭取,然后再去除色素沉淀物,终于恢复了书的原貌。  相似文献   
9.
ABSTRACT

This study demonstrates how ignorance works in the Indonesian massacres of 1965–1966. This atrocity, which claimed roughly five hundred thousand lives, is one of the most forgotten human tragedies of the twentieth century. For many years, the massacres were hidden from public view. Ignorance was reinforced by the New Order under the presidency of Suharto. Drawing on contemporary political philosophers’ studies on the epistemology of ignorance, I contend that ignorance, like knowledge, has structures, criteria, and practices. Ignorance, thus, is not merely a “lack of knowledge” or a state of not knowing, but epistemic and political. By appropriating the epistemology of ignorance, I seek to show how the Indonesian people remember the historical wrongs and how Christian theology provides resources for right remembrance. To confront the epistemic ignorance of the Indonesian mass killings, I argue that the churches must assert their identity as the community of memory and lament.  相似文献   
10.
Empirical aspects of the movement of strontium through the food chain suggest that the level of bone strontium can be used as an indicator of the percentage of meat in human diet. In general, skeletal remains from agricultural peoples are expected to have high bone strontium levels relative to hunter-gatherers from the same geographical region because plants contain relatively higher amounts of strontium when compared with animal products. The results of the study described in this paper, however, indicate that the inclusion of molluscs as a component of the diet may produce the opposite of the expected strontium values. Burials from an Archaic (c. 2500 BC) hunting-gathering population excavated from Luo25, an archaeological site in northern Alabama, USA, exhibit a mean bone strontium level ( atomic absorption; neutron activation) that is higher than the mean level from an agricultural Mississippian (c. AD 1400) population ( atomic absorption; neutron activation) that was buried at the same site. The samples were analysed by two techniques (atomic absorption spectrometry and neutron activation analysis) and the results compared favourably; therefore, the results can be accepted as valid rather than being due to technique error. We propose that the ingestion of molluscs, whose meat is known to contain large amounts of strontium, has produced this reversal from expected results.  相似文献   
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