Qin Yu

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Vitamin A (VA) is important for postnatal brain development, and VA deficiency (VAD) can cause learning and spatial memory deficits in rats. Most of the biological functions of VA are mediated by retinoic acid (RA). To investigate the mechanisms underlying VA deficits, mother rats were fed elemental diets to achieve blood VA levels classified as normal,(More)
UNLABELLED Etiologic diagnoses of lower respiratory tract infections (LRTI) have been relying primarily on bacterial cultures that often fail to return useful results in time. Although DNA-based assays are more sensitive than bacterial cultures in detecting pathogens, the molecular results are often inconsistent and challenged by doubts on false positives,(More)
—In order to map the spatial extent and location of slum settlements multiple methodologies have been devised including remote sensing based methods and field based methods using surveys and census data. In this study we utilize spatial, and others) calculated at multiple spatial scales from high spatial resolution satellite data to map slum areas and(More)
Vegetation effects are currently disregarded in Palmer Drought Severity Index (PDSI), and the sensitivity of PDSI to the choice of potential evaporation (E P) parameterization is often a concern. We developed a revised self-calibrating PDSI model that replaces E P with leaf area index-based total evapotranspiration (ARTS E 0). It also included a simple(More)
BACKGROUND The impact of neuraminidase inhibitors (NAIs) on influenza-related pneumonia (IRP) is not established. Our objective was to investigate the association between NAI treatment and IRP incidence and outcomes in patients hospitalised with A(H1N1)pdm09 virus infection. METHODS A worldwide meta-analysis of individual participant data from 20 634(More)
INTRODUCTION The GOA-SASS project Greening of the Arctic (GOA) is one of 228 endorsed projects of the International Polar Year. It addresses the question " Does the rapid decline of Arctic sea ice affect the tundra and those who depend on it? " The goals of GOA are to document and analyze the changes to terrestrial vegetation that are occurring across the(More)
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