منابع مشابه
Characterisation of 19th and 20th century Chinese paper
The chemical and physical properties of 19th and 20th century Chinese papers were investigated using a variety of material characterisation methods. A reference collection of 178 Chinese papers, dating from 1799 to 1990 was used, and properties such as pH, degree of polymerisation (DP), lignin content, and tensile strength (zero-span) were determined. Most of the papers were of approximately ne...
متن کاملthe study of historical geography of gilanin 19th and early 20th century.
geographical situation of gilan province, its weather and suitable conditions for agriculture, plus its neighboring with russia, have prepared the way for cultural, political and economical relations and interchanges between iran and russia. being called “the gate of europe”, the province also receives many tourists from many countries, especially russia. many of these tourists have recorded de...
متن کاملDISSENTING VOICES Divergent Conceptions of the Continuum in 19th and Early 20th Century Mathematics and Philosophy
ing an object’s divisibility and the other its self-identity. In mathematics it is the concept of whole number, later elaborated into the set concept, that provides an embodiment of the idea of pure discreteness, that is, of the idea of a collection of separate individual objects, all of whose properties—apart from their distinctness—have been refined away. The basic mathematical representation...
متن کامل[Naturalism, novel and society in 19th-20th century transition in Spain.].
The second half of the nineteenth century in Spain was a period characterized by a strong presence of social science, which even came to permeate the masses. Evolutionary theories and some figures such as Charles Darwin himself were present in areas far from the scientific activity proper. The use of concepts and laws of biological origin for the diagnosis and political practice against certain...
متن کاملBarium, zinc and strontium yellows in late 19th–early 20th century oil paintings
This work focuses on the study of the 19th century yellow chromate pigments based on barium (BaCrO4), zinc (4ZnCrO4·K2O·3H2O) and strontium (SrCrO4). These pigments, which are reported to shift in hue and darken, have been found in 19th century artworks. A better understanding of their historic manufacture will contribute to the visual/chemical interpretation of change in these colours. Researc...
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ژورنال
عنوان ژورنال: HortScience
سال: 2007
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.42.2.197