By analyzing Chandra X-ray data of a sample of 21 galaxy groups and 19galaxy clusters,we find that in 31 sample systems there exists a significant central(R ≤1
A novel viologen(4,4'bipyridinium)-based complex(CH3-4,4'-H2bipy)(HgCl4)(1),in which the CH3-4,4'-H2bipy(MQ2+)was generated in situ,has been synthesized via hyd
A mild and efficient method for the conversion of alcohols to their corresponding methoxymethyl ethers and acetates using benzyltriphenylphosphonium tribromide
Aliphatic hydrocarbons (n-alkanes) associated with fine particulate matter were determined in the ambient air of urban,industrial and coastal areas in Tianjin,C
Black carbons (e.g.,charcoal) have a great impact on the transport of organic contaminants in soil and water because of its strong affinity and ubiquity in the
Phosphorous (P) fraction characteristics in sediment resuspension were investigated under adequately hydrodynamic conditions.Four forms of P in overlying water,