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Search: authors:"Lei Lei"

6 papers found.
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Two New Eudesmane Sesquiterpenoids from the Flowers of Chrysanthemum indicum

The flowers of Chrysanthemum indicum, i.e. Ye-ju-hua recorded in the Chinese Pharmacopoeia, has been widely used in China as an important heat-clearing and detoxifying herb for the treatment of inflammation, headache, and vertigo. A phytochemical investigation of this herb has led to the isolation of two new eudesmane sesquiterpenoids, 7-epi-eudesm-4(15),11(13)-diene-1β,3β-diol...

Repair of osteonecrosis of the femoral head

BackgroundOsteonecrosis of the femoral head (ONFH) is a common joint disease and a major cause of morbidity.ObjectiveIn this study Cervi cornus Colla (CCC) deproteinized bone scaffolds were designed and three dimensional (3D)-printed for the repair of ONFH in rats.Material and methodsThe CCC-deproteinized bone scaffolds were 3D-printed using polycaprolactone mixed with the CCC...

Totipotency in the mouse

In mammals, the unicellular zygote starts the process of embryogenesis and differentiates into all types of somatic cells, including both fetal and extraembryonic lineages—in a highly organized manner to eventually give rise to an entire multicellular organism comprising more than 200 different tissue types. This feature is referred to as totipotency. Upon fertilization, oocyte...

The analysis of groundwater levels influenced by dual factors in western Jilin Province by using time series analysis method

To enhance our understanding of the dynamic characteristics of groundwater level in the western Jilin Province of China, two models of decomposition method in time series analysis, additive model and multiplicative model, are employed in this study. The data used in the models are the monthly groundwater levels of three wells observed from 1986 to 2011. Moreover, the analysis of...