نتایج جستجو برای: is recommended

تعداد نتایج: 7261418  

Journal: :The Egyptian Journal of Otolaryngology 2014

2013
Yue-Hua Hu Da-Yong Sheng Yang-Zhou Xiang Zeng-Jiang Yang Da-Ping Xu Ning-Nan Zhang Lei-Lei Shi

The mechanisms driving the spatial patterns of species richness and composition are essential to the understanding of biodiversity. Numerous studies separately identify the contributions of the environment (niche process) and space (neutral process) to the species richness or composition at different scales, but few studies have investigated the contributions of both types of processes in the t...

2014
Jing Li Guangshan Wei Ningxin Wang Zheng Gao

We investigated the diversity and community composition of denitrifying bacteria in surface water from the Yellow River estuary. Our results indicated that the diversity of the denitrifying community in freshwater based on the nirK gene was higher than that in seawater. Furthermore, phylogenetic analysis suggested that the bacteria community could be distributed into eight clusters (Clusters I ...

Journal: :Nature Clinical Practice Gastroenterology & Hepatology 2005

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