博物馆藏品的保管与修复(十六)

三、粗布粗布作为独立的绘画地子使用是很晚的(在十五世纪),但粗布却迅速地获得了公认。这是因为:一、它使图画能卷起来而便于携带和往返运送;二、它使得加大图画尺码有了可能;三、由于若干种破坏作用而受的损害要比木板较少;四、它是易     

評張蔭麟著“中国史綱”

苏联历史学家B·鲁宾同志“评张蔭麟著中国史纲一文前后可分两部份,前部份主要是介绍张著全书内容,后部是对张著的分析批判,并提出自己对中国古代社会的意见,由于本刊篇幅所限,我们仅发表了后一部份。     

苏联民族(二)

在波罗地海沿岸,东欧北部以及伏尔加河中游沿岸居住着乌拉尔语系的芬兰乌戈尔语族的民族:爱沙尼亚人、卡累利阿人、维普斯人、萨阿米人(或称拉伯人)、科米人和科米—彼尔姆人、乌德穆尔特人、马里人、莫尔多瓦人。爱沙尼亚人(自称爱斯特拉谢德人)构成爱沙尼亚苏维埃社会主义共和国的基本人口。他们也居住在列宁格勒州、普斯科夫州和鄂木斯克州,拉脫维亚和乌克兰苏维埃社会主义共和国和阿布哈玆苏维埃社会主义自治共和国。爱沙尼亚人的祖先是操芬兰语的部落,大约在公元前三千年时就出现在现在的爱沙尼亚的土地上。稍晚一些,在他们的     

City size distributions and urban density functions: some interrelationships

This paper is concerned with "relating the apparent regularities of the population distribution within individual cities to the regularities with which the urban population of a nation is distributed among cities....An attempt is first made to draw the two distributions together in mathematical terms. The discussion then turns to a theoretical consideration of possible interrelations between the two distributions, after which the temporal variation of the parameters of each distribution is examined. This leads to the outlining of an evolutionary model of urban-system development, based on the passage through a number of stages." The analysis focuses on urban systems in Europe and North America.     

"The moon" and "the blood": two emblematic symbols in headache and epilepsy according to scientific traditions of the Salerno Medical school and popular medicine in southern Italy

Before describing the state of knowledge on headache and epilepsy at the Salerno Medical School (SMS), we will briefly summarize in the first part its history through the centuries until the "golden period" of the 12th century when it reached its peak by outshining all others in teaching, studies and research. In the second part we will refer to Saint Donato, healer of epileptics in the south of Italy, whose worship is still alive today. The finding of common symbols in conceptions of headache and epilepsy, both in the scientific tradition of the School and in popular medicine, represents a link which is explicable by the wide dissemination of the school's doctrines.