化学材料在石质文物保护中的应用

综述了目前石质文物保护中所用化学材料的种类、特点及应用,探讨了一些在石质文物保护中有发展潜能的化学材料。有机硅材料、纳米材料和仿生材料具有较好的应用前景。深入研究保护材料与石材的相互作用的微观机理,对于开发适用的石质文物保护材料是非常重要的。     

中国特色社会主义文化纲领的历史发展

从改革开放之初提出"两个文明"建设,到十五大正式提出"经济、政治、文化纲领",再到十六届四中全会发展为"物质文明、政治文明、精神文明、社会文明"四位一体,实质是中国特色社会主义事业总体布局的发展过程,是在这个总体布局中社会主义精神文明建设面临新任务、扮演新角色、承担新使命的过程,是中国特色社会主义文化纲领继往开来、不断丰富发展和完善的过程,反映了中国化马克思主义文化理论一脉相承、与时俱进的理论品质和实践品质。     

Qadhat—a comparative study of ancient and new lime mortar from the Marib province/Yemen

Qadhat is the name for a lime mortar in Southern Arabia. Its usage has a long tradition. This work describes physical and mineralogical properties of ancient, historical and new samples, which seem to have been produced the same way. XRD, thin sections and SEM analyses show the similarity of the material. It consists of aggregates of volcanic material that are rich in volcanic glass and lime as binder. The production process includes several hours of crushing the material, which produces fine-grained splinters of aggregates in the binder matrix and gives the mortar a high stability. A weathering test with sodium sulphate on different samples confirms that the stability of this mortar is the result of the production process.     

Exploring Spatial Relationships between Material Culture and Language in the Upper Sepik and Central New Guinea

ABSTRACT New Guinea is the most linguistically diverse region in the world. Over 1,000 languages are found there. Unsurprisingly, controversy exists concerning the degree to which this diversity has been shaped by migration or interaction. At the centre of this controversy is the putative origin and migration path of Austronesian speakers. The advent of Lapita ceramic ware in Melanesia around 3,000 years ago is seen by some as important evidence for their arrival; nevertheless the validity of using Lapita as a marker for Austronesian populations remains in question. The Upper Sepik is one of New Guinea's most linguistically heterogeneous regions. Because it is not marked by far‐reaching exchange systems the region's language and material culture distributions provide potential for exploring such issues. This paper discusses these in the context of an analysis of important ethnographic collections from the region. It is shown that when material culture is assessed technologically and stylistically it is easier to determine an effect for important variables such as language and distance. Additionally, it is demonstrated that as men and women often have different levels of mobility and sociality, classes of material culture belonging to each may differentially reflect important socio‐historical processes.     

Material Culture and the Magical Power of Dance Objects

ABSTRACT This paper takes up the call by scholars such as Alfred Gell to consider objects of material culture as objects, by examining them in the context of production, circulation and reception. Because they are unadorned and without visual interest, langarol, the hand‐held artefacts used in some New Ireland dance performances, do not lend themselves to modes of analysis that see cultural objects as surrogate texts, the hidden meanings of which can be ‘read’. This very ‘lack’ enables us more readily to discern their significance, which lies in their magical potency and in the performance of their creator, the shaman, in attracting, wielding and revealing his awesome power. The power sought is less power over others and more power to — the ability to realise projects that can elicit effects. If consciousness and body are one, such achievements are to be understood as embodiments of intentionality and agency. It is through the production and wielding of such objects that people make themselves.     

Raw material quality and Oldowan hominin toolstone preferences: evidence from Kanjera South,Kenya

The role of raw material quality in Oldowan technology has not been fully explored. There are numerous studies suggesting Oldowan hominins preferred certain types of stone for artifact manufacture. Previous studies of the artifact assemblage from the early Pliocene Oldowan locality of Kanjera South (South Rachuonyo District, Kenya) show that raw material selection and transport was an important aspect of Late Pliocene hominin adaptations. Yet the exact properties of stones that hominins were selecting remain enigmatic. Two potentially important features of artifact raw material are durability and fracture predictability. We investigate fracture predictability through mechanical tests of stone and investigations of the affect of stone properties on fracture patterns in archaeological collections. We investigate stone durability with actualistic studies of edge attrition combined with further mechanical tests of various lithologies. Oldowan hominins at Kanjera appear to have selected raw materials based on their durability. The ability for a stone to fracture consistently does not appear to be as important in hominin toolstone preference as previously assumed. Hominins that produced the assemblages at Kanjera South appear to have incorporated an extensive understanding of various attributes of raw material in the transport and production of stone artifacts. When combined with previous research on the transport patterns at Kanjera, the results of this study provide evidence for a more complex raw material acquisition strategy than has previously been suggested for Late Pliocene Oldowan hominins.     

以图书的有效利用来培养小学生写作能力

把学校的图书室开辟为重要阵地加以利用,并改变写作方向,让小学生们用自己的童心去感受生活,用自己的眼睛去认识生活,用自己的耳朵去倾听生活,用自己的方式去表达生活。惟有如此,他们才能写出富有童情童真、童言童趣的原汁原味的好文章。     

新教材背景下初中数学教学的实施

数学教学的核心是学生的再创造,让学生经历知识的再创造过程,培养了学生的创造性思维。学生从教师的教转向主动地学,在教师的指导下去建构数学知识,为学生能够顺利地用数学知识解决实际问题奠定了良好的知识基础。     

合浦汉墓出土绿柱石宝石珠饰的科学分析

采用便携式拉曼光谱仪对广西合浦出土的新莽(8—23年)和东汉(25—220年)晚期的宝石珠饰进行了原位无损分析,新发现了一批在外观上极易被误认为各色水晶的绿柱石族矿物(如海蓝宝石和透绿柱石)制作而成的浅蓝色和无色透明珠饰。利用手持式显微镜对绿柱石宝石珠饰的穿孔形状、孔径大小及其内部微痕特征进行了观察分析,参考南亚和东南亚同时期石质珠饰的钻孔工艺及钻具研究成果,认为这批绿柱石珠饰采用了钻石钻头双面对钻钻孔工艺。结合南亚地区宝石资源、出土绿柱石宝石珠饰及其钻孔工艺和加工作坊等情况,认为这批绿柱石宝石珠饰是由南亚经海上丝绸之路输入的舶来品。研究结果为探讨汉代中国南方与南亚和东南亚的经济和文化交流提供了有益信息,有助于提高对古代海上丝绸之路这一贸易网络在传播珍贵物品的认识。     

Material and cultural consumption in Cuba: new reference groups in the new millennium

Reference groups serve as markers for citizen-consumers to determine tastes and preferences about work and material and cultural consumption. These groups have evolved slowly in socialist Cuba, mostly during the post-Soviet era. This paper examines the symbolism, roles, and meanings of three such groups: the Cuban Diaspora, Cuban Gen-Yers or Millennials (survivors), and entrepreneurs. A combination of these groups is changing values about a new consumption taking hold across the island and offers insight into material and cultural consumption.