定窑、邢窑和巩义窑部分白瓷的成分分析及比较研究

为研究定窑、邢窑和巩义窑在白瓷烧造工艺的联系和区别,本工作使用能量色散X荧光光谱仪(ED-XRF)分析了这三个窑址出土的部分白瓷残片的胎釉化学组成。分析结果显示,三个窑址制胎所用的原料均以高岭土为主,是中国北方白瓷生产制胎原料采用的最主要的粘土类型。隋代邢窑胎体助熔剂原料曾使用长石类原料,从而生产"透影"白瓷而后期则加入钙质原料代替。定窑的白瓷胎体中加入了钙质原料作为助熔剂原料。巩义窑则以长石类原料为主。三个窑白瓷釉中主要助熔剂氧化物都是来自灰料的氧化钙,但含量明显不同,邢窑和定窑的白瓷釉中CaO含量显著低于巩义窑。比较结果表明,三个白瓷窑在胎釉配方工艺方面互有差别但也紧密联系,其中,定窑早期细白瓷的胎釉配方承继了邢窑唐代细白瓷制作的工艺传统。     

Raw materials for medieval to post-medieval Tuscan glassmaking: new insight from LA-ICP-MS analyses

LA-ICP-MS analyses were performed on a set of Tuscan (post) medieval archaeological glass finds dated to the 13–16th century in order to quantitatively determine the trace element contents. The results are used for defining and distinguishing several compositional groups. The trace element data are consistent with the distinctions obtained by considering the major element data determined via quantitative SEM-EDX, but allow to obtain new insights into the nature and quality of the silica sources employed and the presumed method of ash purification.     

Yellow garnets in roman amphorae—a possible tracer of ancient commerce

The composition of yellow (melanitic) garnets occurring in wine amphorae has been investigated using an electron microprobe. Two distinct compositional groups occur which can be distinguished by their Manganese oxide (MnO) and titanium oxide (TiO₂) contents. The origin of the garnets is most probably in the volcanic rocks of the Roman province and Vesuvius area. The eventual concentration of these minerals was made in stream beds or beach sands. Amphorae samples from Yemen, Cyprus, Italy and France were investigated. They are of the Dressel types Ia, Ic, 2–4 and Graeco-Italic form. It is proposed that a more detailed investigation of the problem could lead to an interesting tracer for commercial relations.     

贯入法原位测试夯土遗址表面强度的适用性和方法研究

表面强度是夯土遗址重要的测试指标和加固效果的评价依据。常规的强度测试方法受到取样和运输等因素的制约，不适用于作为夯土遗址如夯土补筑、表面加固等措施的效果评估方法。贯入法是成熟的砂浆强度检测方法，通过改装砂浆贯入仪降低了仪器量程；制作夯土样、室内试验验证了测试的较高精度；标定了夯土样贯入深度测量值与抗压强度的幂函数关系，确定了测强曲线。在夯土遗址现场开展原位测试，分析了布点密度对测试结果精度的影响，并利用测强曲线推算了测试区域的表面抗压强度。本研究提出了一套集“仪器改装-室内标定-现场高密度布点测试”为一体的夯土遗址表面强度评估方法，为土遗址加固效果的评价体系建设提供了参考价值。     

美国墨西哥移民的人口效应评析

作为一个移民国家,多样化的种族/民族构成一直是美国人口结构的一个显著特征,外来移民始终是改变美国人口结构和布局的一个重要因素。近几十年以来,墨西哥裔人成为美国人口增长最快的族群之一,这部分人口主要由两种成分组成:出生于美国的墨西哥裔人和来自墨西哥的移民。作为拉美裔群体中最大的组成部分,墨西哥裔占全部拉美裔人口2/3左右;目前,墨西哥移民在美国全部外来人口中所占份额最大,达到30%;墨裔人在美国总人口中的比重逐年上升。墨裔人口不断膨胀源于其较高的生育率和移民的持续增加。墨西哥移民增加了美国的外国出生人口的数量;改变了美国人口的种族/民族构成,给美国带来了空前的族群异质性;人口多元化还影响到种族/民族关系。     

论贵州驿道文化线路的价值构成——以明奢香驿道线路为研究个案

贵州驿道文化线路的价值构成是多层面的,既有作为驿道整体的文化价值,包括散落其间的不可移动和可移动文物自身的历史价值,及因驿道而产生的不同区域间交流、对话的非物质文化遗产价值,又有驿道赖以存在的生态价值和驿道沿线自然景观、人文遗迹等不可再生的文化生态旅游价值。     

The strange geography of health inequalities

Place is undoubtedly relevant to health, and geography is a central character in the story of how rich societies handle inequalities in death and disease. But the text is incomplete, its scope limited by a too-delicate encounter between research and policy, and by a strange subdisciplinary divide. Accounts of the geography in health inequalities are largely, albeit subtly, locked into 'context'. They document the complex extent to which different (material, social and cultural) environments undermine or enhance resilience. They tell the tale of risky places. Our complementary narrative is written around the findings of qualitative 'compositional' research. It is about the way health itself is drawn into the structuring of society and space. This geography is a map of health discrimination, illustrated in the processes of selective placement, entrapment and displacement. By drawing attention to the 'healthism' of politics and policy in 'care-less' competition economies, this enlarged perspective might enhance the role of geography (and geographers) in both understanding and managing health inequalities.     

Overseas imports on the Blue Nile: Chemical compositional analysis of glass beads from Soba,Nubia

Archaeological evidence as well as textual sources leave no doubt about Alwa's (Alodia's) intense transcultural connections, further corroborated by understudied overseas glass bead imports found there. This paper presents results of an analysis of 23 glass beads from Soba, the most prosperous capital of medieval Nubia. Compositional analyses using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) have identified glass belonging to a number of broad compositional groups. Three samples were made of soda lime low-alumina glass produced in the Middle East (v-Na-Ca) and Egypt (m/v-Na-Ca). The remaining beads were made of two types of mineral–soda high-alumina glass (m-Na-Al) North Indian in origin. The results of this study provide new evidence for the provenance and chronology of glass beads available in medieval Soba and Northeast Africa, and contribute new data to research on trade contacts of that time.     

Beyond the Right to the City: Territorial Autogestion and the Take over the City Movement in 1970s Italy

The cry and demand for the Right to the City (RttC) risks becoming a cliché, merely signifying urban rebellion rather than proving its practical content on the ground. I explore the limits of the thesis via its fraught entanglement with private property rights and the state‐form; and through Lefebvre's radical critique of the state, political economy and rights elsewhere. Rights claims, I contend, unintentionally reify the uneven power relations they aim to overcome, while routinely cauterising the hard‐fought collective social force that forces social gains. As a counter to the RttC thesis, I explore the autonomous Take over the City (TotC) movements of 1970s Italy, arguing that these largely neglected eminently immanent forms of territorial community activism, brought here into dialogue with Lefebvre's conception of territorial autogestion, surpassed the RttC thesis in praxis. The experience of “Laboratory Italy” thus provides highly suggestive lessons for a contemporary politics of urban space.