Experimental Study on the Mix Ratio of Restored Heritage Building Adobe.

The reciprocating action of the external environment gradually reduces the mechanical properties and water stability of original heritage buildings, resulting in the gradual loss of their cultural value. In this paper, the adobe for the construction of raw soil and cultural relics in western Henan is taken as the research object. The local plain soil is used as the raw material, and the adobe samples are prepared with modified materials such as quicklime and sodium methyl silicate, in order to improve its mechanical properties and water stability.

[Meta-analysis study on risk factors of colorectal cancer].

OBJECTIVE: To evaluate the risk factors of colorectal cancer in China. METHODS: The results of 14 case-control studies from 1988 to 2000 were analyzed by means of Meta-analysis. The total numbers of cases and controls were 5034 and 5205 respectively.