对秦兵马俑彩绘保护技术的思考与建议

秦陶俑彩绘保护是秦始皇陵保护的重点和难点。对秦兵马俑目前的现状进行全面介绍的基础上分析了损坏的原因,指出损坏是由历史、力学以及物理化学等原因共同造成。然后详细评价了PEG200和聚氨酯(PU)乳液联合处理的保护方法与单体材料渗透、电子束辐照固化(EB)的保护方法,并指出了这两种技术的优势及所存在的问题;还介绍了一些辅助加固技术并详细介绍了冷冻干燥法、盐溶液干燥法以及室温干燥法的原理和操作;之后提出了加固剂制备与陶俑保护一体化的设想、均匀场的设想以及稳定生漆层的设想。     

广东地名语言文化空间结构及景观特征分析

作为语言符号,地名是人类群体活动、经济开发和区域文化进程中的集中体现。广东地名层从语种上明显可以分为三个层次:古越语地名层、地方方言地名层和全国通用语地名层。从时间上看,唐代以前,广东地名基本上属古越语时期,宋至明和清前期为南方方言地名时期,清末以来为北方书面语地名时期;从空间上看,广东地方方言地名层大抵在宋代已基本形成,清代最终形成粤方言、客家方言和福佬语地名文化景观三分广东的空间分布格局,粤方言地名层主要集中于珠三角及邻近地名,客家方言地名层位于北江和东江间的广大山区、丘陵地带,粤东韩江地区则多是福佬地名文化层;从形成原因分析,广东地名层主要归究于历史时期移民、区域人内口繁衍和土地大规模开发,加之人地矛盾日渐突出又为族群地名文化扩散提供了条件,而社会制度的发展和健全,最终成为广东地名层语言文化景观形成的重要机制     

Death of a President and his Assassin—Errors in their Diagnosis and Autopsies

On July 2, 1881, Charles Julius Guiteau shot President James Abram Garfield in the right flank. The President died because of infection produced by the unsterile fingers and probes repeatedly inserted into the wound. The major complaint of the wounded President was intractable pain in his legs and feet. This symptom failed to alert the doctors to the possibility of vertebral and spinal cord injury. Garfield died with sepsis after 80 days of intense national concern, and for the patient there was psychological, physical, and nutritional deprivation. His autopsy revealed the bullet was not in the pelvis as his doctors had expected, but adjacent to the first lumbar vertebra it had shattered. The trial and execution of Guiteau split the medical community into those that considered him insane and those who felt execution was justified. Guiteau was delusional and his brain revealed chronic inflammation and histological features suggestive of syphilis. At the time, and since, the propriety of the execution has been questioned.     

SUCCESS,TRUTH, AND MODERNISM IN HOLOCAUST HISTORIOGRAPHY: READING SAUL FRIEDLÄNDER THIRTY‐FIVE YEARS AFTER THE PUBLICATION OF METAHISTORY1

This essay provides a close reading of Saul Friedländer's exceptionally successful comprehensive history of the Holocaust from the theoretical perspective of Hayden White's philosophy of history. Friedländer's The Years of Extermination has been celebrated as the first synthetic history of the “Final Solution” that acknowledges the experiences of the victims of Nazi genocide. But Friedländer has not simply added the voices of the victims to a conventional historical account of the Holocaust. Instead, by displacing linear notions of time and space and subtly deconstructing conventional concepts of causality, he has invented a new type of historical prose that performs rather than analyzes the victims' point of view. Friedländer's innovation has particularly radical consequences for the construction of historical explanations. On the one hand, Friedländer explicitly argues that anti‐Semitism was the single most important cause of the Holocaust. On the other hand, his transnational, multifaceted history of the “Final Solution” provides a wealth of data that escapes the conceptual grasp of his explicit model of causation. Friedländer chooses this radically self‐reflexive strategy of historical representation to impress on the reader the existential sense of disbelief with which the victims experienced Nazi persecution. To Friedländer, that sense of disbelief constitutes the most appropriate ethical response to the Holocaust. Thus the narratological analysis of The Years of Extermination reveals that the exceptional quality of the book, as well as presumably its success, is the result of an extraordinarily creative act of narrative imagination. Or, put into terms developed by White, who shares Friedländer's appreciation of modernist forms of writing, The Years of Extermination is the first modernist history of the Holocaust that captures, through literary figuration, an important and long neglected reality of the “Final Solution.”     

古代彩塑和壁画中植物纤维种类鉴别

针对古代彩塑泥层和壁画地仗中植物纤维种类鉴定技术欠缺的现状,开发出一套以纤维横截面细胞形貌识别为基础的植物纤维种类鉴别方法。从秸秆类植物的化学脱胶技术、提取单根纤维、纤维横截面切片,以及纤维截面细胞形貌对比等开展了系列研究。将该方法应用于彩塑泥层和壁画地仗中常见的9种植物纤维：麦秸秆、稻秸秆、玉米秸秆、高粱秸、黄麻、亚麻、苎麻、剑麻和棉花,并以宁夏须弥山石窟以及甘肃麦积山石窟的彩塑文物样品中取出的纤维标本为例进行了鉴定。结果表明：须弥山石窟彩塑粗泥层中的植物纤维为小麦与黄麻,细泥层中的为苎麻,彩塑佛像手指中的为棉花;麦积山彩塑泥层中含有麦秸秆。研究结果证明本方法可以应用于文物样品中植物纤维种类鉴别。     

北京万泉寺遗址金代白瓷胎釉配方的锶同位素特征研究

北京丰台万泉寺遗址位于金中都遗址内,遗址出土金代白瓷样品在形制上符合金代定窑白瓷特征。白瓷胎体成分和锶同位素比值综合研究确定了三种制胎原料,其中:高铝黏土原料的锶同位素比值在0.73左右;白云岩化石灰岩原料的锶同位素比值在0.72左右且钙含量较高;草木灰原料的锶同位素比值在0.71左右,且锶含量在1 000 μg/g左右。通过釉层的成分分析及胎釉成分的对比研究,发现釉层主要使用高硅原料与白云岩化石灰岩配制而成,并受到了部分熔融胎体的强烈影响,根据与草木灰关联性较强的P₂O₅含量推断,釉层中可能也含有一定量草木灰。万泉寺遗址白瓷的研究丰富了有关金代定窑白瓷胎釉配方的认识,确认了白云岩化石灰岩为胎釉的主要钙质助熔剂,揭示了草木灰类助熔剂在胎和釉中可能存在各自独立的来源。     

定边郝滩东汉壁画墓绿色底层颜料分析研究

本研究以定边郝滩东汉壁画墓中绿色底层为研究对象,采用偏光显微镜(PLM)、带能谱的扫描电子显微镜(SEM/EDS)、X射线衍射仪(XRD)和拉曼光谱(RS)分析了绿色底层的成分与物相,同时和四种已知国外绿土相比较,得出绿色底色为绿土,对其进行深入分析研究以期为考古学和后期文物保护工作提供科学信息。     

单檐歇山式古建筑抗震性能振动台试验

为有效保护古建筑,采用振动台试验方法,研究了中国明清官式木构古建的抗震性能。以故宫某单檐歇山木构古建为对象,制作了1∶2缩尺比例模型。模型含浮放柱底、柱架、斗拱、歇山屋顶、墙体等所有构造,且施工工艺完全符合中国明清官式木构古建施工规定。通过施加白噪声激励,获得了模型的基频和阻尼比。通过施加不同强度等级的1940年El-Centro波,获得了模型典型节点的位移和加速度响应,讨论了模型的减震系数,评价了浮放柱底、榫卯节点、斗拱、屋顶、墙体等构造的抗震性能。结果表明:模型的振动形式表现为平面内的扭摆,其原因与歇山式屋顶质量分布不均密切相关。模型的震前基频为1.47Hz,阻尼比为4.6%。地震作用下,模型的位移及加速度响应曲线近似稳定、均匀。尽管屋顶构造则对地震力有一定放大作用,但浮放柱底、榫卯节点、斗拱等构造能发挥较好的耗能减震作用。对于不同构造而言,榫卯节点的减震性能最好,其减震系数可降至0.30;斗拱次之,其减震系数可降至0.53;而浮放柱底与柱顶石之间的摩擦耗能性能最弱,其减震系数最小值为0.66。墙体在地震波强度增大过程中发生倒塌,但不影响结构整体稳定性。因此,单檐歇山式木构古建具有良好的抗震性能。     

青铜古镜表面层富硅的考察

运用扫描电子显微镜、电子探针微量分析、X射线衍射、原子力显微镜和红外反射光谱等分析手段对16块古青铜镜残片的合金基体及表面层进行了分析比较,结果发现表面层内Cu含量低于基体,而Sn．O的含量则明显增高;表面层内有Si元素的富集,并且是以SiO_2非晶形态存在;对于不同种类的青铜镜,表面层深度不同,含Si量有差异,其表面光亮度和釉质感亦有区别。对古铜镜颜色的变化,SiO_2的保护作用及铜镜表面的加工工艺进行了分析探讨。     

The Australian 2016 Defence White Paper,great-power rivalry and a ‘rules-based order’: an imagined correspondence between Carr,Bull and Bell

This piece is an imagined email correspondence between three renowned international relations scholars, E. H. Carr, Hedley Bull and Coral Bell, who are discussing the Australian 2016 Defence White Paper. The purpose of such an exercise is to reflect on the ‘big-picture’ international relations questions posed by what might otherwise be thought of as a relatively technical defence policy document. In particular, the correspondence between the three focuses on the central importance of the White Paper’s assumptions of a ‘rules-based global order’ and the relationship between this order and US power. In their time, all three authors spoke directly to questions of power, law and order in their scholarly work, which had been deeply influenced, in all three cases, by periods spent working at the ‘coalface’ of these issues in government in Britain and Australia. As such, Carr, Bull and Bell have much to say about how Australia is positioning itself for a post-unipolar world.