We take three types of tidal marshes in Shanghai City as the study object:tidal marshes in mainland,tidal marshes in the rim of islands,and shoal in Yangtze est
Taking the rural economic indicator data in 17 cities (regions) of Hubei Province in 2009 as samples, this paper establishes evaluation index system of rural ec
In the course of training farmer college students,there have been a number of problems facing the modern distance education based on digital learning environmen
SCIE paper output can reflect the status quo and trend of discipline research and 7 038 scientific articles concerning bioinformatics are retrieved in SCIE data