排序方式: 共有263条查询结果,搜索用时 15 毫秒
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韦荃 《文物保护与考古科学》2007,19(1):33-35
为了给已加固饱水木器文物留下再处理的空间,本研究对高级醇加固的饱水木器进行了可逆性实验。高级醇加固漆木器文物是利用甲醇具有较强的渗透性和亲水性,置换出木材中的水分子,然后再以硬脂醇置换甲醇,使失水后的木材纤维细胞壁得到加固。可逆性实验是使已加固饱水木器重新回到饱水状态。通过控制环境温度,利用硬脂醇与甲醇共溶原理,改变置换溶液的浓度,用甲醇置换出其器物内的硬脂醇,再用水置换出甲醇,水又重新替代了降解木材的原有空间。实验结果显示,硬脂醇属于“可逆”性加固材料。该方法保护加固原理及工艺简单,并且加固时间短、资金投入少、保护加固设备要求不高,因此对抢救漆木器文物具有广泛的推广应用价值。 相似文献
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Ian Ward 《Political Theology》2017,18(2):115-136
Contemporary debates about the virtue of civility oscillate between anxious calls for more of it in contemporary politics, as a panacea for all manner of religious-political conflict, and wholesale debunkings of civility talk, as an ideological fog intended to induce conformity to the terms of unjust social arrangements. I argue that this oscillation should come as no surprise, given the term's fraught theological and political associations in the history of modern ethical thought. This history left civility with an ambivalent legacy, one associated with democratic respect on the one hand, and hypocrisy and deception, on the other. Through a reading of Martin Luther King Jr.’s “Letter from Birmingham Jail,” I try to rescue civility from this oscillation, by explicating it as an ancillary virtue: the part of justice that disposes citizens to confront unjust relationships in ways that leave open the possibility of relational repair. When explicated with due care and set in an interactive context of other virtues – including courage, prudence and toleration – civility can be distinguished from its semblance, niceness. This distinction helps us understand civility, properly understood, as neither a cure-all for democratic conflict nor an ideological device of conflict suppression, but rather as an ancillary, but important, excellence of character helping to sustain democratic relationships of mutual recognition. 相似文献
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Sarah W. Tracy 《国际历史评论》2019,41(2):372-390
Few people have influenced western eating patterns in the twentieth and early twenty-first centuries as much as physiologist and epidemiologist Ancel Keys (1904–2004). Keys not only developed the K Ration for the United States military, but also advocated for diets that lowered blood cholesterol and famously discovered the health benefits of the Mediterranean diet in the 1950s and 1960s. Keys’ interest in the Mediterranean diet arose from his service on the United Nations (UN) Food and Agriculture Organization (FAO)-World Health Organization (WHO) Joint Expert Committee on Nutrition, which allowed him to explore nutritional status, dietary habits, and regional eating patterns across the globe. This paper examines how Keys’ service as chair of the UN FAO Committee on Caloric Requirements and the UN FAO Expert Committee on Nutrition led him to think globally about the relationship between diet and cardiovascular health, and to launch the first international comparative epidemiological study of diet and heart disease, the Seven Countries Study. 相似文献
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通过对罗振玉旧藏“元年铍”中未知地名“
”新的考释,可以将该地名隶定为“
”,读为“广望”,即见于《汉书·地理志》的西汉广望。以往战国时“广望”多被划入燕国境内,从“元年铍”应为战国时赵国兵器可知,“广望”在战国时一度属赵国。结合铭文内容与史料,铍铭中的“元年”应为赵悼襄王元年,广望属赵时间上限应该不会早于赵孝成王元年,下限则为赵王迁八年。 相似文献
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卢燕玲 《文物保护与考古科学》2016,28(1):38-46
髹漆贴金木雕属岭南地区代表性的传统木雕工艺,此类文物藏品也因此而独具特色。由于一件清代髹漆贴金木雕观音菩萨坐像存在糟朽、开裂、漆皮起翘、脱落等病害,需采取相应的修复措施。为此,在采集漆层、木胎等样品进行X射线荧光能谱、拉曼、红外光谱、切片观察等分析检测的基础上,依据分析检测结果和木雕保存现状制定实施了表面清理、菌虫防治、裂缝和残缺部位修复补全、脱落漆皮回软回贴、髹漆贴金仿卉处理等技术措施。保护处理后的木雕文物器形完整,色泽协调,形态和性质稳定,达到了预期的效果。上述分析检测手段和保护修复技术对同类文物的保护工作有借鉴作用。 相似文献
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《容成氏》所述"文王服九邦"一事,存在着作者根据其主观立场,对史实进行增饰和改造的现象。作者之所以改造"文王服九邦"故事,并将其置于《容成氏》的"革命"之说中,主要是为了反衬"武王伐纣"的残酷性,从而凸显"禅让"优于"革命"。《容成氏》凸显"汤武革命"的暴力特征,是其不纯属于墨家或儒家学派的一个标志。《容成氏》的叙事风格及其思想,也受到了战国纵横家一定程度的影响。因此,《容成氏》可谓一部糅合了儒家、墨家、纵横家思想的具有"杂家"特色的作品。《容成氏》的这一特色,反映了战国时期楚地学术思想走向融合的趋势。 相似文献