Hongyan Guan
High-performance liquid chromatographySample preparationLiquid chromatography–mass spectrometrySelected reaction monitoringSolid phase extraction
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Publications 4
#1Hongyan GuanH-Index: 2
#2D OkelyAnthony (Illawarra Health & Medical Research Institute)H-Index: 58
Last. Anna KontsevayaH-Index: 1
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2 CitationsSource
#1Hongyan GuanH-Index: 2
#2Zhiguang Zhang (UOW: University of Wollongong)H-Index: 4
Last. Ting ZhangH-Index: 1
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BACKGROUND: World Health Organisation (WHO) Guidelines on Physical Activity, Sedentary Behaviour and Sleep for Children under 5 Years of Age were released in 2019. The aim of this study was to examine the proportion of Chinese kindergarten children who met each individual guideline and each combination of the guidelines and the associations with adiposity. METHODS: Participants were 254 kindergarten children aged 4.1-6.3 years recruited from three kindergartens in urban area of Beijing. Physical...
1 CitationsSource
Last. Hongyan GuanH-Index: 2
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Obesity in school children has increased and posed an adverse impact on the development at their adolescent phase. Physical activity and energy expenditure are important factors for diagnosing and treating obesity. To obtain such metrics, we conduct a study on the preschool children to quantitatively measure their activity using two types wearable devices (ActiGraph GT9X and our low-cost one) and metabolic instruments. In such a way, we have obtained a unique dataset that consists of motion char...
#1Haifeng ZhangH-Index: 1
#2Li Quan (PKU: Peking University)H-Index: 4
Last. Junsheng Huo (CCDC: Chinese Center for Disease Control and Prevention)H-Index: 10
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Abstract A sensitive method for the simultaneous analysis of vitamin A (VA), 25-hydroxyl vitamin D3 (25-OH VD3) and α-tocopherol (VE) in children plasma by liquid chromatography-tandem mass spectrometry (LC–MS/MS) has been developed and validated. Sample preparation chose the solid phase extraction. 100 μL of plasma was mixed with 300 μL ethanol contained 4 μL isotope-labelled analytes. After a series operation, the supernatant was applied to the solid phase extraction (SPE) plate (HLB μElution ...
1 CitationsSource