Search Results - Bao Yu
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UPLC fingerprinting combined with quantitative analysis of multicomponents by a single marker for quality evaluation of YiQing granules
Published 2025-07-01Get full textResearch backgroundYiQing granules (YQGs) are a patented drug commonly used in clinics in China. However, the quality control index of this preparation is relatively limited, which does not effectively ensure the quality of the product. Thus, a comprehensive quality evaluation of YQGs is lacking.Obj...
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Evaluation of the Resistance of Different Tea Cultivars to Tea Aphids by EPG Technique
Published 2012-12-01Get full textIn order to investigate the resistance of tea plant to tea aphid, the feeding behavior of tea aphids on six different tea cultivars was monitored by (EPG) technique. The result showed that the duration of E1, E2 as well as (E1+E2) which was feeding waveforms of Toxoptera aurantii (Boyer) in tea phlo...
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Molecular structure characterization of middle-high rank coal via 13C NMR, XPS, and FTIR spectroscopy
Published 2024-10-01Get full textABSTRACT: Elemental analysis, nuclear magnetic resonance carbon spectroscopy (13C-NMR), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) experiments were carried out to determine the existence of aromatic structure, heteroatom structure and fat structure in c...
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Research Progress of Medical Endoscope Device
Published 2021-10-01Get full textMedical endoscopes can diagnose effectively diseased organs in a patient's body. During the process of therapeutic endoscopic intervention , 山e diagnosis and treatment results mainly depend on the design structure and imaging principle of the endoscope. lnte1>1entional process is prone to di...
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Exploiting push-pull strategy to combat the tea green leafhopper based on volatiles of Lavandula angustifolia and Flemingia macrophylla
Published 2020-01-01Get full textThirteen volatile compounds were identified from Flemingia macrophylla plants. Eight major components significantly attracted the tea green leafhoppers, Empoasca flavescens F. Based on their relative abundances, following synthetic blends were made for field experiments: 1) eight-component-attractan...
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