<正>This paper studies a singular diffusion equation in nondivergence form with the Dirichlet boundary value and initial value Here p > 1,Ω(?) RN is a bounded
1 Introduction and Main ResultsIn book [1], Professor C. D. Sogge proved the Theorem 2.2 (page 15) by the method presented by F. John. But I think we can also p
采用Mi Seq高通量测序技术对耐铜植物茵陈蒿根际的细菌16S r DNA基因V3—V4区片段进行了测序,研究了细菌群落结构的变化,并分析了其与土壤环境因子的关系。研究表明,采样点Cu3中细菌群落的多样性、丰富度、均匀度、ACE指数、Chao1指数等均显著低于Cu1和Cu2,但Cu3的覆盖度高于Cu1。排名前10的优势细菌门总相对丰度均在95%以上,其中8个优势细菌门在3个采样点中是相同的,包括P