Response of cathodoluminescence of alkali feldspar to He+ ion implantation and electron irradiation

Cathodoluminescence (CL) of minerals such as quartz and zircon has been extensively studied to be used as an indicator for geodosimetry and geochronometry. There are, however, very few investigations on CL of other rock-forming minerals such as feldspars, regardless of their great scientific interest. This study has sought to clarify the effect of He+ ion implantation and electron irradiation on luminescent emissions by acquiring CL spectra from various types of feldspars including anorthoclase, amazonite and adularia. CL intensities of UV and blue emissions, assigned to Pb²⁺ and Ti⁴⁺ impurity centers respectively, decrease with an increase in radiation dose of He⁺ ion implantation and electron irradiation time. This may be due to decrease in the luminescence efficiencies by a change of the activation energy or a conversion of the emission center to a non-luminescent center due to an alteration of the energy state. Also, CL spectroscopy of the alkali feldspar revealed an in-crease in the blue and yellow emission intensity assigned to Al-O^?-Al/Ti defect and radiation-induced defect centers with the radiation dose and the electron irradiation time. Taken together these results indicate that CL signal should be used for estimation of the α and β radiation doses from natural radionuclides that alkali feldspars have experienced.     

New species of Tanyderidae (Diptera) from the Jiulongshan Formation of China

Dong, F., Shih, C.K., Skibińska, K., Krzemiński, W. & Ren, D., 10.4.2015. New species of Tanyderidae (Diptera) from the Jiulongshan Formation of China. Alcheringa 39, xxx–xxx. ISSN 0311-5518

Two new tanyderid species of Praemacrochile Kalugina, 1985 (P. dryasis, P. ovalum) and one new tanyderid species of Protanyderus Handlirsch, 1909 (P. astictum) are described and illustrated from the late Middle Jurassic Jiulongshan Formation of Daohugou in eastern Inner Mongolia, China. These species are circumscribed using well-preserved fossil specimens with bodies and complete wings. We also collected and identified new material of two species of Praemacrochile (P. ansorgei Lukashevich & Krzemiński and P. chinensis, Krzemiński & Ren) and one species of Protanyderus (P. vulcanium Zhang) from the same locality.

Fei Dong [123dongfeifei@163.com], Dong Ren [rendong@mail.cnu.edu.cn] and Chungkun Shih [chungkun.shih@gmail.com], College of Life Sciences, Capital Normal University, Xisanhuanbeilu 105, Haidian District, Beijing, PR China 100048; Kornelia Skibińska [yukisiak@gmail.com] Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Krakow, Poland; Wies?aw Krzemiński [wieslawk4@gmail.com] Pedagogical University of Cracow, Faculty of Geography and Biology, Institute of Biology, ul. Podchor??ych 2, 30-084 Kraków, ma?opolskie, Poland.     

秦始皇帝陵出土二号青铜马车彩绘夔龙纹复原方法研究

为对秦始皇陵出土的彩绘铜车马采取非接触且科学可靠的方法开展研究,选择使用高光谱成像技术,以非接触方式无损地获取文物表面信息。通过对信息的处理与分析,实现对于文物表面彩绘纹样的发现与复原工作。针对秦始皇帝陵出土的二号青铜车马彩绘纹样的受损情况,提出了结合高光谱成像技术与计算机图像技术的数字复原方法。主要是利用了高光谱成像技术“图谱合一”的优势:一方面利用其在近红外区域的高光谱成像结果检测并复原出彩绘纹样难以识别的图案边缘信息;另一方面利用高光谱数据中的光谱信息,将铜车马彩绘纹样上未知矿物颜料的光谱同实验建立的矿物颜料标准光谱库进行拟合,识别出铜车马上彩绘所采用的颜料种类(雄黄1、石青5、石绿1、黄丹、铅白等),从而获得色彩信息。实验结果显示该方法可以得到较为完整的铜车马彩绘纹样的数字复原图像,并为今后对于铜车马更深入的研究和应用提供有利支撑。     

The Saga of the ‘Second industrial divide’ and the history of the ‘third Italy’: Evidence from export data

The idea of the Third Italy has achieved an iconic status in geography. It has come to represent one of the main geographical manifestations of the so‐called second industrial divide between Fordist mass production and flexible specialisation. Yet the idea has received limited critical attention since acquiring its elevated status. It deserves to do so, because it involves confusing a localised model of economic development with the economic character of a larger geographic region. Examining province level export data for the years 1985, 1991, 1995 and 1999 for both total exports and two key sectors using exploratory spatial data analysis, provincial rankings and LISAs (local indicators of spatial association) suggests that the export‐based homogeneity and dynamism of the Third Italy can be exaggerated. Italy's urban hierarchy, particularly the centrality of Milan, continues to play a significant role in the Italian economy. Common use of the term ‘Third Italy’ confuses an economic process with a specific geographical configuration.     

丝绸之路文化与旅游产业

丝绸之路旅游随着其整体申遗成功而备受关注,但就其发展现状而言,仍存在着诸多问题。只有在机遇面前合理应对存在的问题,才能使其真正成为国际著名旅游品牌。     

Evaluation of community planning and life of senior cohousing projects in northern European countries1

Cohousing schemes were evolved as alternative housing to reduce housework for working women, and to reduce loneliness of elderly people by promoting active mutual relationship with community residents in northern European countries. This article discusses how residents manage their life in senior cohousing projects in Sweden and Denmark. The purpose of this study is to investigate residents' life satisfaction connected with demographic characteristics of residents, physical environment and common activities in the senior cohousing communities, so that it could offer usable information for the establishment of new senior cohousing projects in other countries, as well as an empirical evaluation of the existing projects in Scandinavian countries themselves. Important variables influential to residents' life satisfaction are also discussed in order to improve senior citizens' quality of life. The methods used for the study are literature review, interviews, field trips and questionnaire. Nine hundred and thirty‐five postal questionnares were sent to 28 senior cohousing communities throughout Denmark and Sweden. Of those 536 replies were collected and analysed by SPSS program using frequency, mean and Chi‐square test. As a result, it was found out that most of the respondents are healthy, 70‐year‐olds, and satisfied with their current living in the community. The majority of them also would like to strongly recommend others to move to senior cohousing schemes to improve quality of life in their later years. Residents' intensive concern about building location and design is a noteworthy reminder for designers and architects as well as for professionals and decision‐makers who work in the elderly welfare sector.     

金朝“南人”胡化考略

金朝入主中原之后,中原地区形成一个外部对南宋隔绝而内部多元化的文化空间,加之女真统治者对汉民族的统治政策及变化,都在强制或促进着中原汉人("南人")的胡化。这种胡化状况表现在衣饰、发式、礼仪等方方面面,在心理上则呈现出对南宋的疏离,和对金朝统治的认同倾向。"南人"的胡化,消融了他们与燕云"汉人"之间的政治、文化差异,为元朝四等人制对汉民族的划分提供了现实依据。     

太原晋卿赵鞅墓车马坑马骨的保护与修复

春秋晚期的晋卿赵鞅墓车马坑马骨历经2500年的埋藏,有一定程度的腐朽;易地保护的切割,造成严重损伤;多次搬迁,造成箱内切块严重开裂破碎;出土后的长期裸露存放,形成一定程度的表面风化.为解决马骨的破损与风化,以及马骨承托底土的整体性问题,本工作采取的研究与保护措施有:对马骨骨组织结构进行电镜观察和力学性能检测、置换和轻化承托底土、隔绝地面水气、修补切割缝、修复屿骨、作防风化处理.经过两年的艰苦工作,晋卿赵鞅墓车马坑马骨的科技保护与修复完成了既定目标,达到了预期效果.     

吐鲁番契约所见汉字大写数字的起源

为探究汉字用大写数字的使用,本文利用吐鲁番出土的契约、账目类文书对"壹"、"贰"、"叁"、"肆"、"伍"、"陆"、"柒"、"捌"、"玖"、"拾"、"佰"、"仟"、"萬"进行了逐个梳理。结果发现,合计时古人常常使用大写数字。为了防止篡改,契约和账目中也常常使用同音或近音的多笔画字来代替小写数字。个别大写数字出现较早,但并不普遍。而系统的大写数字是经过繁化和固定化两个过程,最终在唐武周以后形成定制,普遍使用,并沿用至今。     

明南京城和西安城建城比较

明南京城和西安城都是中国古代城垣建筑史上的典范之作,它们综合利用了历史上城墙构建的特点,有许多相同之处,但是由于它们在建城地理环境、指导思想等方面的差异,导致二者又具有各自的独特性。