营城子汉墓出土玻璃耳珰的化学成分与制作工艺研究

营城子汉墓位于辽宁省大连市甘井子区,是我国东北地区一处重要的大型汉墓群。营城子汉墓出土了一批玻璃耳珰,为探讨其成型工艺及来源,采用超景深显微系统进行了表面形貌观察,初步认为是模铸成型,并经过打磨。采用便携式X射线荧光光谱仪(XRF)进行了化学成分分析,结果显示,它们分属铅钡硅酸盐和钾硅酸盐玻璃系统,一件由Cu²⁺着色,其余主要由Co²⁺着色。其为我国自制,所用钴料来源相同,钴料的锰钴比特征与国产钴土矿的类似。并对营城子汉墓出土玻璃耳珰造型与化学成分体系间的关系进行了分析,对玻璃耳珰制作模式进行了初步探讨,进一步加深了对我国古代玻璃耳珰制作与传播的认识。     

青海瞿昙寺瞿昙殿壁画制作材料与工艺初步分析

青海瞿昙寺是中原地区至今保存较完整,集古建、雕刻彩绘和壁画于一体的明代早期官式建筑群。瞿昙寺瞿昙殿现存壁画约217.5 m²,是中原地区经典的明代早期藏传佛教壁画,具有珍贵的历史和学术研究价值。本研究通过显微镜(OM)、剖面分析(Cross-section)、扫描电镜-能谱(SEM-EDS)、X射线衍射(XRD)等多种分析方法,对瞿昙寺瞿昙殿壁画制作材料及工艺开展了初步调查分析。结果显示:瞿昙殿壁画以砖墙体为支撑体,地仗层由粗泥层和细泥层组成;地仗中粗细泥层含沙量不等,粗泥层含沙量约60%,细泥层含沙量较少,约为16%～25%;地仗层中总体纤维含量为3%左右;地仗土粒度级配良好,粒径多集中在1~100 μm之间;地仗中含少量硫酸钠和氯化钠;瞿昙殿壁画使用颜料主要为铅丹、朱砂、氯铜矿、副氯铜矿、石青等矿物颜料,颜料层厚度20～200 μm之间;铅丹颜料在瞿昙殿中出现“章丹打底银朱盖面”的分层应用以及铅丹变色的现象;瞿昙殿壁画中明代壁画无底色层,清代乾隆时期壁画有底色层。本次分析研究获得瞿昙殿壁画层位、地仗组成和颜料使用信息,为瞿昙殿壁画科学保护和深入研究提供重要的第一手资料。     

故宫藏清代挂屏镶嵌玻璃饰件的科学分析

清代镶嵌器物数量巨大且种类繁多,玻璃是其中一种重要的镶嵌材料。为探讨清代镶嵌玻璃饰件的成分特征和加工工艺,本工作采用微区X射线荧光能谱、扫描电子显微镜、显微共聚焦拉曼光谱、激光诱导击穿光谱等方法,对故宫馆藏清代紫檀木边嵌玉石楼阁挂屏上的6件镶嵌玻璃饰件进行了初步分析,结果表明:6件玻璃饰件属于K₂O-CaO-SiO₂体系,以石英岩引入SiO₂作玻璃基体,硝石作助熔剂引入K₂O,CaO有方解石和萤石两个主要来源;深蓝色玻璃着色元素为钴,浅蓝色玻璃着色元素为铜,蓝绿色玻璃为铜和铁共同着色,4件玻璃饰件乳浊剂均为CaF₂;黄色玻璃以铅锡黄为着色剂并乳浊剂。通过显微形貌观察结合档案记载,认为镶嵌玻璃饰件是在熔制好的玻璃块上经过二次加工而成,加工工艺采用了中国古代传统的治玉工艺。研究结果可为清代镶嵌工艺及玻璃制作工艺的研究提供佐证。     

Thin-folded Shell for the Renewal of Existing Wooden Roofs

In this article, a technique for the renewal of historic building wooden roofs is presented. The solution can be used for the strengthening of existing wooden roofs against excessive lateral thrusts on the peripheral wall or for the recovery of the attics, as it allows removing the existing structural elements, such as possible wooden truss-works of no artistic value. With minor adaptations, the solution can be addressed to enhance the building seismic performance. The technique is minimally impairing on existing buildings and can be applied also in new constructions.

The technique is based on the construction of a thin folded shell, overlaying the existing pitches. Emphasis is given to lightweight folded shells, obtained by overlaying thin plywood panels on the existing roof rafters and planks, without modifying the overall architectural layout.

The technique conceptual design is discussed and a simplified analytical method is proposed, which allows for the clarification of the role of each structural component and can be adopted for the folded shell proportioning and design. The analytical results are validated against numerical results obtained with reference to some case studies. Ultimately, emphasis is given to the detailing, whose correct execution is mandatory for the success of the proposed structural intervention.     

唐代宝花狮纹锦织物的特点和复制

通过分析唐代宝花狮纹锦各项参数,确定它须由大花偻束综提花机制织,据此复原出这项织造技术．并成功复制出宝花狮纹锦。从而可以推断,随着丝绸之路的畅通,唐代中西方商品、文化、技术交流紧密,大花楼束综提花技术已经开始应用,以此为基础．丝绸品种从以前的经锦过渡剑纬锦,织物图案的艺术表现力得以增强．提花织机的生产效率也得到提高。     

HINTS ABOUT SITE AMPLIFICATION EFFECTS COMPARING MACROSEISMIC HAZARD ESTIMATE WITH MICROTREMOR MEASUREMENTS: THE AGRI VALLEY (ITALY) EXAMPLE

We approach from a new standpoint the problem of estimating seismic hazard for some towns and villages located in Val d'Agri area (Southern Italy) that in the past have been affected by several seismic events. The estimates are carried out using a method that is based on the analysis of site seismic history extracted from macroseismic catalogues. To study the influence of site effects two different procedures have been performed: in the first, seismic hazard estimates have been deduced from epicentral data only, in the second, intensity data actually observed at the site are also considered. The difference between the two estimates can be correlated with local variations of seismic response due to local geological features which are responsible for possible cases of amplification. In order to validate the presence of such correlation, seismic hazard estimates have been compared to site amplification measurements obtained by using the HVSR (Horizontal to Vertical Spectral Ratio) technique. Our findings reveal a good correlation between seismic hazard enhancements and the presence of site amplification effects. The application of this kind of analysis to the Val d'Agri area has pointed out that the joint estimates of site seismic hazard enhancement and HVSR measurements could be a helpful tool to identify problems related to seismic microzonation.     

欧洲文物保护技术规范述评

欧洲文物保护标准化技术委员会(欧盟文标委)是欧洲标准委员会(CEN)下设的一个专业技术委员会,目的是为欧洲地区制定一个协调统一的文物保护方法体系,同时为欧洲各国文物保护的科学化和规范化提供技术保障。欧盟文标委由5个专家组组成,分别开展15个类别的文物保护标准的起草工作,并与相关国际组织积极合作,其标准的制定过程科学规范,工作程序严谨,标准内容符合时代发展的需求,为世界各国的文物保护行业提供了典范。     

Das Wissen der Schulden. Recht,Kulturtechnik und Alltagserfahrung im liberalen Kapitalismus

The Knowledge of Debt: Law, Media Technique, and Everyday Experience in Liberal Capitalism. Performing an object such as ‘the economy’ hinges on practices of formatting knowledge. The article proposes to look at such instituting moments in connection with social conflicts over the legitimate rules of exchange. This is exemplified by way of recounting the story of the codification of Swiss bankruptcy law in 1889. In order to homogenize the legal procedures of debt collection and bankruptcy, two subject categories were instituted: ‘merchants’ and ‘non-merchants’. These different categories were thought to account for the diverging temporalities and spaces of credit exchange in everyday economic life. The introduction of the commercial register, a media-technical apparatus, enabled a formal distinction between ‘merchants’ and ‘non-merchants’. However, this boundary was contested and proved to be porose.     

试析殷墟铸铜中的“一模多器”现象

在现在青铜器的复制或仿制中常常使用"一模多器"技法。所谓"一模多器",就是在铸造青铜器时,仅制作一件器物模型,翻制多件外范,利用多件外范浇铸出形制相似的多件青铜器。通过系统分析商代的青铜器实物和铸范,发现在商代青铜器铸造过程中,部分器类的铸造也存在"一模多器"的现象。