聚醋酸乙烯酯乳液的表征、性能及其在彩绘类文物保护中的应用

聚醋酸乙烯酯(PVAc)乳液是常见的彩绘类文物保护材料。采用激光粒度仪、热重/差热分析、红外光谱、X-射线衍射、扫描电镜、透射电镜等表征了PVAc乳液的粒径以及胶膜的热稳定性、结构和形貌;采用粘度计、表面张力仪、pH计、电导率仪等研究了乳液浓度与其粘度、表面张力、pH、电导率的关系;通过冻融、室温-高温放置、离心分离研究了乳液的稳定性;同时用PVAc乳液对模拟起甲和酥碱的壁画进行了修复。结果表明,PVAc乳液粒径呈双峰分布,小粒子的平均粒径为380 nm,大粒子的平均粒径为5.85μm;乳液胶膜为非结晶物质,胶膜热重的最终质量残留为1.54%,335℃出现放热峰。PVAc乳液的电导率随浓度的增大而增大,pH随浓度的增大而下降;相同温度下表面张力随浓度的增大而基本呈现低浓度下降,高浓度上升的趋势。相同浓度下,表面张力随温度升高而无显著变化,表明PVAc乳液的表面张力受温度变化影响不大。相同温度下,乳液粘度随浓度的增大而增大;相同浓度下,乳液的粘度随温度的升高而降低。冻融、离心分离和不同温度下静置发现,该乳液出现分层。用该乳液对模拟起甲和酥碱壁画修复后,再分别老化20个循环和12个循环,发现颜料层再次空鼓、起甲。综合分析,说明实验中所使用的该种PVAc稳定性和抗老化能力较弱,在修复彩绘类文物中应慎重选择PVAc的种类,综合考虑PVAc的使用浓度、环境因素对其性能的影响,以达到最佳使用效果。     

1930年代中叶乡贤推选活动考论

1934年,在新生活运动发起后不久,蒋介石在南昌发布通令,要求各省分别推选历代乡贤,报送中央,作为本省楷模.这场乡贤推选活动以激发民族精神和增进国家认同为宗旨,是蒋介石及国民政府在意识形态领域塑造统一价值信仰的重要举措.活动发起后,在各地得到一定程度上的响应.各省围绕乡贤推选办法、乡贤具体名单、乡贤事略编纂等问题展开激烈讨论.乡贤推选活动是1930年代中叶由官方发动、民间参与的一场文化活动,最终因抗战的全面爆发而终止,虽曾在各地营造起崇敬乡贤、团结同乡的社会氛围,但并没有起到为国民党政权凝聚人心的作用.     

European Cohesion Policy impact on development and convergence: a local empirical analysis in Portugal between 2000 and 2014

Substantial European Structural and Investment Funds (ESIF) monies have been directed at regional economic and social development in Portugal in which Portuguese local government plays a vital role. Given the magnitude of funding, an important question turns on the effect of the ESIF on overall local authority performance. This paper focuses on the impact of the ESIF on Portuguese municipality performance and development. In particular, it investigates whether the ESIF improved the performance of Portuguese local government and which factors best explain its effect on municipality development. The analysis considers all 308 Portuguese local authorities for the period 2000–2014. Various policy implications flowing from the empirical results of this analysis are explored.     

Yiwu: Historical transformation and contributing factors

ABSTRACT

Yiwu has transformed from one of the poorest rural counties in the 1970s to one of the richest modern cities in China during the 2010s. This paper examines this significant historical transformation and its key contributing factors along the five dimensions: marketization, industrialization, urbanization, internationalization and digitalization. It also identifies what historical and contemporary factors stimulated the rapid growth of Yiwu and how Yiwu is a special case in comparison to other Chinese localities. This paper argues that business entrepreneurship, local government and their interaction have played particular roles in promoting Yiwu’s transformation. This study builds on and contributes to literature across the fields of development, entrepreneurship and anthropology. It demonstrates how entrepreneurship can promote development even if a region is lacking in what are often assumed to be necessary resources for development. However, for this to be the case there is the need for a supportive and risk-taking government.     

A methodology to identify a network of industrial parks in the Ave valley,Portugal

In recent decades in Europe, municipalities have promoted many poorly qualified and widespread industrial parks. These policies have caused various problems such as oversupply of industrial land, obsolescence and high vacancy rates. The future of these sites is uncertain and has become a key issue in planning. Nowadays, policies are focused on upgrading these sites and on implementing regional coordinated practices. This paper describes a methodological approach to identifying a subregional network of industrial parks in the Ave valley, Portugal. The network is based on the parks’ attractiveness and has the purpose of supporting planning policies in terms of upgrading and providing new sites. The approach was based on a multi-criteria analysis whereby the parks were ranked according to their attractiveness considering their coverage in terms of infrastructures, services and accessibility. Results show that the majority of the existing and planned parks, even if upgraded, will not be very attractive and will be limited to a municipal scale due to structural problems related to their location and poor coverage. Moreover, the paper also discusses the challenges in implementing this planning approach at a subregional level. Despite the specificities of the case study, this methodology could be adopted in similar studies.     

玉门花海毕家滩棺板《晋律注》的保护修复研究

玉门花海毕家滩出土的《晋律注》是裱糊在棺板外侧的纸本文书,因埋藏环境复杂及年代久远等各种原因,文物整体保存状况极为不佳。棺板存在残缺、断裂等多种病害,而外侧的纸本文书降解更为严重,已达到触之即粉的状态。为了使文物的完整性得以体现及能够得达到展陈的基本要求,在对棺板木材进行种属鉴定及特征分析的基础上,在文物保护基本原则与理念的指导下,对棺板进行了病害调查、清洗、粘接及加固,对外侧文书进行了内容识读、原料种类鉴定。经过保护处理使得棺板的整体性得到了体现,达到了展陈的基本要求。原料分析结果显示外侧的纸本文书为皮浆纤维,因此该文书是目前为止出土为数不多的魏晋时期以皮浆为原料的纸质实物,这对甘肃河西地区造纸原料发展的研究提供了珍贵的资料。     

朱熹《家礼》与明清徽州宗族以礼治族的实践

明清时期,在徽州社会中形成了对朱熹及其《家礼》极端崇拜的社会风气。徽州宗族多依据《家礼》进行本族内部的制度设计和制度建设,同时还十分重视对礼仪的执行与监督,旨在以此实现以礼治族、维持宗族社会秩序的目的。     

民国文官制度的独特创制

在中国古代,主要是通过科举制度选拔国家官员。科举制度废除后,孙中山主张在五权宪法的框架之中,由国家设置考试院,主管文官的选拔、任用和考绩。这一创新的理论实践于民国时期。在民国时期,文官考试制度开始运作和完善,其中的特种考试和检定考试是我国的独特创制。文官的任用、考绩、升调、奖惩、抚恤等制度称作文官"铨叙"制度,与文官考试制度相辅相成。文官"铨叙"制度最为规范,也是我国的独特创制。     

法国乡村旅游产品的营销及其经验——以Le Relais de Chenillé公司为例

国家旅游局将2006年旅游主题定为“中国乡村游”,表明政府开始重视乡村旅游的发展。然而,我国乡村旅游处于起步阶段,存在不少问题,有必要借鉴国外的成功经验。法国乡村旅游从探索到完善经过了四十多年的发展路程,发展规模大,销售网络完善,拥有系统的行业标准和规范,使法国乡村成为家庭度假和休闲旅游的主要目的地。其在乡村旅游产品营销方面的成功经验值得我们借鉴,主要包括：政府、居民和旅游企业统一协调;乡村旅游的模式相对固定;利用政府性的旅游部门进行推销;利用行业认证进行质量控制和宣传;营销模式多样化等。