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The dynamics of microbial quantity and enzyme activities during decomposition process of masson pine (Pinus massoniana) leaf litter, oak (Quercus aliena) leaf litter and their mixture (at natural mass ratio, 8: 2) were studied with litterbag method in the pinus forest typical vegetations of mid-subtropical Jinyun Mountain nature reserve. The results showed(More)
Introduction : Molecular imaging has become an essential tool in characterization and measurement of biological process at the molecular or cellular level. In vivo small animal studies have shown the feasibility of using MRI to investigate gene expression and stem cell migration with superparamagnetic iron nanoparticles [1]. However, even though MRI(More)
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