14 Result(s)
within
Qun Xu
Science, Humanities and Social Sciences, multidisciplinary
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Article
Open AccessAnomalous water molecular gating from atomic-scale graphene capillaries for precise and ultrafast molecular sieving
The pressing crisis of clean water shortage requires membranes to possess effective ion sieving as well as fast water flux. However, effective ion sieving demands reduction of pore size, which inevitably hinde...
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Article
Open AccessBioinspired “cage traps” for closed-loop lead management of perovskite solar cells under real-world contamination assessment
Despite the remarkable progress made in perovskite solar cells, great concerns regarding potential Pb contamination risk and environmental vulnerability risks associated with perovskite solar cells pose a sign...
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Article
Open AccessStrong ferromagnetism of g-C3N4 achieved by atomic manipulation
Two-dimensional (2D) metal-free ferromagnetic materials are ideal candidates to fabricate next-generation memory and logic devices, but optimization of their ferromagnetism at atomic-scale remains challenging....
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Article
Open AccessReduced renal function may explain the higher prevalence of hyperuricemia in older people
This study aimed to investigate the contribution of renal dysfunction to enhanced hyperuricemia prevalence in older people. A cohort of 13,288 Chinese people aged between 40 and 95 years were recruited from Ja...
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Article
Open AccessAcute Effects of Nitrogen Dioxide on Cardiovascular Mortality in Bei**g: An Exploration of Spatial Heterogeneity and the District-specific Predictors
The exploration of spatial variation and predictors of the effects of nitrogen dioxide (NO2) on fatal health outcomes is still sparse. In a multilevel case-crossover study in Bei**g, China, we used mixed Cox pro...
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Article
Open AccessIn vivo characterization of hair and skin derived carbon quantum dots with high quantum yield as long-term bioprobes in zebrafish
Carbon quantum dots (CDs) were widely investigated because of their tunable fluorescence properties and low toxicity. However, so far there have been no reports on in vivo functional studies of hair and skin deri...
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Article
Open AccessSectoral roles in greenhouse gas emissions and policy implications for energy utilization and carbon emissions trading: a case study of Bei**g, China
In this study, a decomposition and emissions matrix is developed to identify the roles (giver or taker) played by the sectors in the greenhouse gas emissions for the economy of Bei**g in China. Our results in...
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Article
Open AccessAbnormal pancreatic enzymes and their prognostic role after acute paraquat poisoning
Ingestion of paraquat causes multi-organ failure. Prognosis is best estimated through measurement of blood paraquat concentrations but this facility is not available in most hospitals. We studied the prognosti...
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Article
Open AccessCUL4A facilitates hepatocarcinogenesis by promoting cell cycle progression and epithelial-mesenchymal transition
CUL4A, a member of the CULLIN family, functions as a scaffold protein for an E3 ubiquitin ligase. It was reported that the CUL4A gene showed amplification in some human primary hepatocellular carcinomas (HCC). Ho...
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Article
Open AccessHigh-Performance Flexible All-Solid-State Supercapacitor from Large Free-Standing Graphene-PEDOT/PSS Films
Although great attention has been paid to wearable electronic devices in recent years, flexible lightweight batteries or supercapacitors with high performance are still not readily available due to the limitat...
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Article
Open AccessHigh-efficiency exfoliation of layered materials into 2D nanosheets in switchable CO2/Surfactant/H2O system
Layered materials present attractive and important properties due to their two-dimensional (2D) structure, allowing potential applications including electronics, optoelectronics and catalysis. However, fully e...
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Article
Diurnal, seasonal, and spatial variation of PM2.5 in Bei**g
PM2.5 pollution in Bei**g has attracted extensive attention in recent years, but research on the detailed spatiotemporal characteristics of PM2.5 is critically lacking for effective pollution control. In our stu...
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Article
Open AccessA map of rice genome variation reveals the origin of cultivated rice
Crop domestications are long-term selection experiments that have greatly advanced human civilization. The domestication of cultivated rice (Oryza sativa L.) ranks as one of the most important developments in his...
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Chapter
Selective Deslimings of Fine Iron Ores Based on Aggregation Between Magnetite and Hematite
Hematite fines were found to form aggregates with magnetite particles in the same slurry, without the help of any flocculants. Because of this aggregation, fine iron ores containing hematite and magnetite can ...
