污染大气中浑仪,简仪的带锈防护

浑仪、简仪（以下简称两仪）在高PH、大气污染和日晒雨淋环境中的腐蚀是一种动态加速腐蚀过程。采用合成的双唑胺铜缓蚀剂和有机硅改性的甲基丙烯酸树脂,并分别复配成协同缓蚀剂群和含有增效稳定剂的封护剂。采用这两种材料和脱水后再防护的工艺,使带锈防护后的浑仪、简仪的腐蚀低于无污染大气中的速率。用电化学方法评价了防护技术的可行性,根据腐蚀与人工老化试验结果讨论了防护材料性能与腐蚀环境和带锈防护的关系,采用XPS分析方法探索了双唑胺比BTA更适用于两仪防护的原因。     

From resistance to revolution: the limits of nonviolence in Arendt’s ‘Civil Disobedience’

ABSTRACT

Arendt’s work on civil disobedience sets out an optimistic portrayal of the possibilities of such forms of action in re-energising the spirit of American politics in the late twentieth century. Civil disobedience should not simply be tolerated, she argued, but incorporated into the legal structure of the American political system. Her work is usually seen to promote an idea of civil disobedience that is thus bound to existing constitutional principles and essentially nonviolent. However, by looking at Arendt’s discussion and critique of various practices of civil disobedience in 1960s and 1970s America, specifically in relation to the nonviolence movement influenced by Martin Luther King, and on the other side, the more militant Black Power movement, a different idea of civil disobedience emerges. This paper argues that whilst, for Arendt, civil disobedience within America certainly possesses the constitutionally restorative potential she assigns to it, in a broader sense – theoretically, globally, and even in terms of alternative ideologies within America – her conception of civil disobedience is in itself neither necessarily constitutional, nor nonviolent. It is, instead, a form of revolutionary action, whose limits are set only by politics itself, and specifically, Arendt’s criterion of publicity.     

The Numerical Study of Base-Isolated Buildings Under Near-Field and Far-Field Earthquakes

The behavior of base-isolated building frame is investigated with the help of a numerical study for far-field and near-field earthquakes with directivity and fling-step effects. Both design-level and extreme-level earthquakes are considered. Selected response parameters are peak floor displacement, acceleration, base shear, and isolator displacement. Inelastic behavior of base-isolated structure during the earthquake is investigated performing nonlinear time history analysis of a ten-story building frame. This study shows that base isolation is not effective for near-field earthquakes. Even for design-level earthquake, the frame gets significantly into inelastic range for earthquakes with fling-step effect.     

高句丽与汉魏晋及北族政权的朝贡关系

1—5世纪初,无论是统一王朝时期,还是王朝分裂、政权频繁更替时期,高句丽对中原王朝和北族政权都采取积极朝贡的姿态,朝贡活动呈现出单向、双向、多向的变化,先后向十多个王朝和政权进行朝贡。随着政治形势和朝贡对象的变化,高句丽朝贡活动的目的及其与朝贡对象的关系也有一定的变化。     

浙江省平湖庄桥坟遗址出土石犁的保护修复

浙江平湖庄桥坟遗址出土的石犁是史前考古的新发现,属于痕迹文物。出土时木构件痕迹饱水,为暗褐色、开裂严重、整体呈腐蚀状,非常脆弱。针对器物的保存状况,因地制宜地制定一系列保护方法:木构件痕迹的脱水保护、底托的加固制作、木构件粘贴复原等,使文物得以长期保存。     

定州汉墓竹简《论语》研究概述

1973年,考古工作者在河北定州八角廊村40号汉墓之中发现了大量竹简,其中包括许多《论语》残简。这是我们目前所能看到的最早的《论语》白文版本,也是目前唯一能够见到的《论语》的西汉抄本原件,是《论语》出土文献的代表。学者们通过对此简本深入细致的研究,得出了许多新见解。     

14C测定判别武王克商年代范围始末

武王克商年代是我国古代编年中的一个关键点,近年来^14C测定技术有了重要发展,我国^14C测年界在此基础上探讨了^14C方法应用于商周历史纪年的希望。1996年夏商周断代工程正式立项,利用^14C测定判别武王克商年代范围的任务得以实施。1998年初两个常规^14C实验室以3‰测定精度,前后开始对陕西丰镐遗址出土样品^14C测定,并于1998年10月6－7日先后公布了^14C数据,提出武王克商代范围应判别在公元前1050－1020年间。1998年下半年AMS室开始测定。三室测定数据对比结果基本相合,利用殷墟,琉璃河等遗址出土的样品系列作^14C测定得出的结果,与上述年代范围一致。1998年11月30日公布了天计算结果,与测定结果不谋而合,经多方面反复验证,历时近二年,都无法动摇已有的判别结果,具有较高的可信度。     

《扬州画舫录》与扬州清曲

清代康乾时期,《扬州画舫录》已成为一个相当成熟和具有鲜明特点的地方曲种。该曲种表现在活动方式趋于多样,名家辈出,影响深广,曲牌、曲目题材和内容丰富多彩,与昆曲相互吸收和融合,一些文士参加了清曲唱本的创作等诸多方面。     

江苏省红色旅游与文物保护开发的实证研究

近年来,红色旅游发展为江苏省旅游发展带来了新的机遇,也对市场经济条件下的文物保护事业提出了新的挑战。从分析江苏省红色旅游与文物保护的现状入手,通过问卷调查、现场访谈等方式进行实证研究,提出了红色旅游与文物保护的互动发展模式,并在此基础上提出了具有可操作性的发展对策。