Neolithic sites in Oran are rich in ceramic pottery.Microscopic and chemical analysis of products is closely linked to the subsequent development of the main analytical methods:optical microscopy and X-ray fluorescenc...Neolithic sites in Oran are rich in ceramic pottery.Microscopic and chemical analysis of products is closely linked to the subsequent development of the main analytical methods:optical microscopy and X-ray fluorescence.This study learns more about the mineralogical constituents of some caves pottery shards,ceramic typology of the Oran region,likely from the basic raw material(common clay,various types of regolith,silty loams,rarely marl),knowledge of the nature of intentionally added degreasers and characterized geological and archaeological context,also combined with the microscopic study of thin pottery blades met these requirements allowing us to showcase the progress of these ancient societies.展开更多
Masson pine(Pinus massoniana) is one of the main pine species in China.It is the most extensively distributed,it is the largest in number,and its use is extensive.This paper deals with the study situation of the prope...Masson pine(Pinus massoniana) is one of the main pine species in China.It is the most extensively distributed,it is the largest in number,and its use is extensive.This paper deals with the study situation of the property variation of the tree and the effect of external conditions on its properties in China,including pine wood modification(degreasing,mould prevention and improvement of dimensional stability).展开更多
文摘Neolithic sites in Oran are rich in ceramic pottery.Microscopic and chemical analysis of products is closely linked to the subsequent development of the main analytical methods:optical microscopy and X-ray fluorescence.This study learns more about the mineralogical constituents of some caves pottery shards,ceramic typology of the Oran region,likely from the basic raw material(common clay,various types of regolith,silty loams,rarely marl),knowledge of the nature of intentionally added degreasers and characterized geological and archaeological context,also combined with the microscopic study of thin pottery blades met these requirements allowing us to showcase the progress of these ancient societies.
基金Popularizing Projects in Forestry Science and Technology([2005]91 and[2006]Yangtze River -1)
文摘Masson pine(Pinus massoniana) is one of the main pine species in China.It is the most extensively distributed,it is the largest in number,and its use is extensive.This paper deals with the study situation of the property variation of the tree and the effect of external conditions on its properties in China,including pine wood modification(degreasing,mould prevention and improvement of dimensional stability).
