Shuping Fan

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Extension of life cycle has been one of the hot spots in Wireless Sensor Networks. Owing to limited capacity nodes fail as soon as energy is consumed, which tends to shorten survival time of entire wireless sensor network. Therefore, a clustering key management scheme based on hierarchical tree is proposed, furthermore dynamic update of networks is realized(More)
Six cultivars including strong, middle and weak gluten wheat varieties were cultivated at five latitudes(from 32 degrees N to 36 degrees N) in Henan Province, and the variations of their qualitative characters were analyzed in relation to the different environments. The result indicated that latitudes had great effects on the protein content, wet gluten(More)
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