Publications by authors named "Renjie Chen"

324 Publications

Tailoring double-layer aromatic polymers with multi-active sites towards high performance aqueous Zn-organic batteries.

Mater Horiz 2021 Sep 22. Epub 2021 Sep 22.

Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Unlike most reported organic-inorganic cathodes, the organic-organic zinc hosts can fully exploit the flexible structures and various redox chemistries of the organics. Herein, nanoporous carbon electrodeposited with a wrapped poly(-aminophenol, 3-AP) sandwich layer and a good conductive poly(-aminophenol, 4-AP) skin, designated as a [email protected](3-AP)/poly(4-AP) cathode, has been synthesized for the first time a novel two-step electrodeposition method. The synergistic effect of the double-layer polymers endows the [email protected](3-AP)/poly(4-AP) cathode with an ultrahigh specific capacity, excellent rate performance and long-term lifespan that are superior to those of the pristine [email protected](3-AP) and [email protected](4-AP) electrodes. Also, the strong electron donor capabilities of the multiple active sites (CO and CN) in the hetero-structural organic cathode can exhibit symmetrical bending to host inserted Zn ions during the discharge process, which opens up new opportunities to construct advanced Zn-organic batteries.
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http://dx.doi.org/10.1039/d1mh01226fDOI Listing
September 2021

Characteristics of childhood allergic diseases in outpatient and emergency departments in Shanghai, China, 2016-2018: a multicenter, retrospective study.

BMC Pediatr 2021 Sep 17;21(1):409. Epub 2021 Sep 17.

Department of Respiratory Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, 201102, China.

Background: The prevalence of allergic diseases (ADs), such as asthma and allergic rhinitis (AR), is increasing worldwide in both adults and children. Although ADs are common and frequently coexist in outpatient care, city-level data regarding the characteristics of childhood AD remain limited in China. This study aimed to assess the profile and characteristics of ADs in the city of Shanghai.

Methods: A multicenter retrospective study was designed to collect routine administrative data from outpatient and emergency departments from 66 hospitals in Shanghai, China, from 2016 to 2018. Children with asthma, AR, allergic conjunctivitis (AC), and allergic skin diseases were investigated. Demographic characteristics, patients visit pattern, spectrum of diagnosis, and comorbidities were analyzed.

Results: A total of 2,376,150 outpatient and emergency visits for ADs were included in the period from 2016 to 2018. Allergic skin diseases accounted for 38.9%, followed by asthma (34.8%), AR (22.9%), and AC (3.3%), with a male predominance in all four diseases. Asthma and allergic skin diseases were most frequent in the 1 to < 4 years of age group, while AR and AC were more common in the 4 to < 7 years of age group. Asthma accounted for the greatest number of annual and emergency visits. The most frequent comorbidity of asthma was lower respiratory tract infection (LRTI) (49.3%), followed by AR (20.5%) and upper respiratory tract infection (14.1%). The most common comorbidities of AR were otitis media (23.4%), adenoid hypertrophy/obstructive sleep apnea (22.1%), followed by LRTI (12.1%), asthma (9.4%) and chronic pharyngitis (8.9%).

Conclusions: Asthma and allergic skin diseases were the most common ADs in outpatient and emergency departments in the study period. Respiratory tract infection was the most common comorbidity of asthma in children. More attention should be devoted to the treatment of comorbidities to improve childhood AD outcomes with a better understanding of the characteristics of ADs in outpatient care.
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http://dx.doi.org/10.1186/s12887-021-02880-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8447671PMC
September 2021

The exposome in practice: an exploratory panel study of biomarkers of air pollutant exposure in Chinese people aged 60-69 years (China BAPE Study).

Environ Int 2021 Sep 12;157:106866. Epub 2021 Sep 12.

China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China. Electronic address:

The exposome overhauls conventional environmental health impact research paradigms and provides a novel methodological framework that comprehensively addresses the complex, highly dynamic interplays of exogenous exposures, endogenous exposures, and modifiable factors in humans. Holistic assessments of the adverse health effects and systematic elucidation of the mechanisms underlying environmental exposures are major scientific challenges with widespread societal implications. However, to date, few studies have comprehensively and simultaneously measured airborne pollutant exposures and explored the associated biomarkers in susceptible healthy elderly subjects, potentially resulting in the suboptimal assessment and management of health risks. To demonstrate the exposome paradigm, we describe the rationale and design of a comprehensive biomarker and biomonitoring panel study to systematically explore the association between individual airborne exposure and adverse health outcomes. We used a combination of personal monitoring for airborne pollutants, extensive human biomonitoring, advanced omics analysis, confounding information, and statistical methods. We established an exploratory panel study of Biomarkers of Air Pollutant Exposure in Chinese people aged 60-69 years (China BAPE), which included 76 healthy residents from a representative community in Jinan City, Shandong Province. During the period between September 2018 and January 2019, we conducted prospective longitudinal monitoring with a 3-day assessment every month. This project: (1) leveraged advanced tools for personal airborne exposure monitoring (external exposures); (2) comprehensively characterized biological samples for exogenous and endogenous compounds (e.g., targeted and untargeted monitoring) and multi-omics scale measurements to explore potential biomarkers and putative toxicity pathways; and (3) systematically evaluated the relationships between personal exposure to air pollutants, and novel biomarkers of exposures and effects using exposome-wide association study approaches. These findings will contribute to our understanding of the mechanisms underlying the adverse health impacts of air pollution exposures and identify potential adverse clinical outcomes that can facilitate the development of effective prevention and targeted intervention techniques.
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http://dx.doi.org/10.1016/j.envint.2021.106866DOI Listing
September 2021

The acute effects of particulate matter air pollution on ambulatory blood pressure: A multicenter analysis at the hourly level.

Environ Int 2021 Sep 9;157:106859. Epub 2021 Sep 9.

School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, Shanghai 200032, China. Electronic address:

Epidemiological evidence from ambulatory blood pressure monitoring is needed to clarify the associations of particulate air pollution with blood pressure and potential lag patterns. We examined the associations of fine and coarse particulate matter (PM, PM) with ambulatory blood pressure among 7108 non-hypertensive participants from 7 Chinese cities between April 2016 and November 2020. Hourly concentrations of PM and PM were obtained from the nearest monitoring stations. We measured four blood pressure indicators, including systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP) and pulse pressure (PP). Linear mixed-effect models combined with distributed lag models were applied to analyze the data. Generally, very short-term exposure to PM was significantly associated with elevated blood pressure. These effects occurred on the same hour of blood pressure measurement, attenuated gradually, and became insignificant approximately at lag 12 h. An interquartile range (IQR, 33 μg/m) increase of PM was significantly associated with cumulative increments of 0.58 mmHg for SBP, 0.31 mmHg for DBP, 0.38 mmHg for MAP, and 0.33 mmHg for PP over lag 0 to 12 h. The exposure-response relationship curves were almost linear without thresholds, but tended to be flat at very high concentrations. No significant associations were observed for PM. Our study provides independent and robust associations between transient PM exposure and elevated blood pressure within the first 12 h, and reinforces the evidence for a linear and non-threshold exposure-response relationship, which may have implications for blood pressure management and hypertension prevention in susceptible population.
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http://dx.doi.org/10.1016/j.envint.2021.106859DOI Listing
September 2021

Vertical Channels Design for Polymer Electrolyte to Enhance Mechanical Strength and Ion Conductivity.

ACS Appl Mater Interfaces 2021 Sep 3;13(36):42957-42965. Epub 2021 Sep 3.

Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.

Polymer electrolytes are the key candidates for solid-state batteries benefiting from their intrinsic advantages over inorganic electrolytes in terms of flexibility and easy processability. However, they suffer from low ionic conductivity and poor mechanical strength, which restrict their wide utilization. Conventional ceramic fillers are used to improve the mechanical properties of polymer electrolytes but lack sufficient Li conductivity. In this work, a framework with vertical channels that possess fast Li movement is designed. It is found that the poly(ethylene oxide) (PEO) compound in the vertical channel framework benefits to improve the ionic conductivity and mechanical strength synchronously. The framework in which ionic liquids are loaded on a zirconium dioxide surface ([email protected]) helps to improve ionic conductivity by 2 orders of magnitude compared with PEO, which is due to the enhanced orientation of ion transport. By optimizing the content of [email protected], the elastic modulus is also tripled. Therefore, the symmetric lithium battery can cycle stably for more than 800 h at a current density of 0.25 mA cm, whereas the lithium metal battery has a specific capacity of 135 mAh g at a current density of 2C and can cycle stably for more than 200 cycles at 60 °C.
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http://dx.doi.org/10.1021/acsami.1c13834DOI Listing
September 2021

Cobalt Selenide Hollow Polyhedron Encapsulated in Graphene for High-Performance Lithium/Sodium Storage.

Small 2021 Aug 25:e2102893. Epub 2021 Aug 25.

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Owing to the high specific capacities, high electrochemical activity, and various electronic properties, transition metal selenides are considered as promising anodes for lithium- and sodium-ion storage. However, poor electronic conductivity and huge volume expansion during cycling are still responsible for their restricted electrochemical performance. Herein, CoSe hollow polyhedron anchoring onto graphene (CoSe/G) is synthesized by self-assembly and subsequent selenization. In CoSe/G composites, the CoSe nanoparticles, obtained by in situ selenization of metal-organic frameworks (MOFs) in high temperature, are distributed among graphene sheets, realizing N element doping, developing robust heterostructures with a chemical bond. The unique architecture ensures the cohesion of the structure and endorses the reaction kinetics for metal ions, identified by in situ and ex situ testing techniques, and kinetics analysis. Thus, the CoSe/G anodes achieve excellent cycling performance (1259 mAh g at 0.1 A g after 300 cycles for lithium storage; 214 mAh g at 2 A g after 600 cycles for sodium storage) and rate capability (732 mAh g at 5 A g for lithium storage; 290 mAh g at 5 A g for sodium storage). The improved electrochemical performance for alkali-ion storage provides new insights for the construction of MOFs derivatives toward high-performance storage devices.
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http://dx.doi.org/10.1002/smll.202102893DOI Listing
August 2021

Organic Persistent Luminescent Materials: Ultralong Room-Temperature Phosphorescence and Multicolor-Tunable Afterglow.

ACS Appl Mater Interfaces 2021 Sep 19;13(34):41131-41139. Epub 2021 Aug 19.

Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China.

Organic persistent luminescent materials have attracted special attention due to their significant applications in optoelectronics, sensors, and security technology areas. In this work, a series of organic compounds (1-4) with twisted electron donor-acceptor structures are successfully designed and synthesized, and then the resultant compounds are dissolved in methyl methacrylate (MMA), and afterward, in situ polymerization realizes single-molecular organic room-temperature phosphorescent (RTP) materials (P1-P4). All RTP materials show long lifetime, especially P2 exhibits ultralong lifetime of 1.51 s. When the compounds are grown into single crystals, multicolor-tunable afterglow is obtained at different delay times due to the dual emission of phosphorescence and delayed fluorescence, which is promising to be applied in high-level anticounterfeiting.
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http://dx.doi.org/10.1021/acsami.1c12249DOI Listing
September 2021

Continuous Conductive Networks Built by Prussian Blue Cubes and Mesoporous Carbon Lead to Enhanced Sodium-Ion Storage Performances.

ACS Appl Mater Interfaces 2021 Aug 3;13(32):38202-38212. Epub 2021 Aug 3.

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science & Engineering, Beijing Institute of Technology, Beijing 100081, China.

The challenges of improving electrical conductivities and enhanced rapid dynamics are active research areas in the modification of Prussian blue (PB) and Prussian blue analogues (PBAs), which are used as excellent cathodes of sodium-ion batteries (SIBs). Herein, the terephthalic acid etched stepwise hollow bulky PB cubes and the intimate contact mesoporous carbon (CMK-3) particles with the adhered minisize PB cubes can together build continuous conductive networks. The composite (donated as [email protected]) has high electrical conductivity, low resistance, and ultrahigh specific surface, which can lead to high capacitive contribution ratios. The [email protected] electrode can deliver a discharge capacity of 120 mAh g and maintain retention of 85.0% after cycling for 200 cycles at a current density of 100 mA g. Even cycling at 1 A g, the reversible capacity can be measured to 102 mAh g and exhibit stability over a long cycle. Raman spectroscopy and X-ray diffraction (XRD) patterns were further measured to illustrate the phase transition of crystal structure along with the extraction/insertion processes of Na ions. Especially, the assembled full cell with NaTi(PO)@C anode can also show good stability and provide promising insights of applying the [email protected] for energy storage systems in the future.
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http://dx.doi.org/10.1021/acsami.1c06634DOI Listing
August 2021

Impact of ozone exposure on heart rate variability and stress hormones: A randomized-crossover study.

J Hazard Mater 2021 Jul 26;421:126750. Epub 2021 Jul 26.

Department of Environmental Health, School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, P.O. Box 249,130 Dong-An Road, Shanghai 200032, China; Children's Hospital of Fudan University, National Center for Children's Health, Shanghai, China. Electronic address:

The biological mechanisms underlying the associations between atmospheric ozone exposure and adverse cardiometabolic outcomes are yet to be identified. Imbalanced autonomic nervous system (ANS) as well as activations of the sympatho-adrenomedullary (SAM) and hypothalamic-pituitary-adrenal (HPA) axes are among possible early biological responses triggered by ozone, and may eventually lead to cardiometabolic abnormalities. To determine whether acute ozone exposure causes ANS imbalance and increases the secretion of neuroendocrine stress hormones, we conducted a randomized, double-blind, crossover trial, under controlled 2-hour exposure to either ozone (200 ppb) or clean air with intermittent exercise among 22 healthy young adults. Here we found that, compared to clean air exposure, acute ozone exposure significantly decreased the high-frequency band of heart rate variability, even after adjusting for heart rate and pre-exposure to ambient air pollutants and meteorological factors. Ozone exposure also significantly increased the serum levels of stress hormones, including corticotrophin-releasing factor, adrenocorticotropic hormone, adrenaline, and noradrenaline. Metabolomics analysis showed that acute ozone exposure led to alterations in stress hormones, systemic inflammation, oxidative stress, and energy metabolism. Our results suggest that acute ozone exposure may trigger ANS imbalance and activate the HPA and SAM axes, offering potential biological explanations for the adverse cardiometabolic effects following acute ozone exposure.
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http://dx.doi.org/10.1016/j.jhazmat.2021.126750DOI Listing
July 2021

Associations of fine particulate matter and constituents with pediatric emergency room visits for respiratory diseases in Shanghai, China.

Int J Hyg Environ Health 2021 07 13;236:113805. Epub 2021 Jul 13.

School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China. Electronic address:

Background: Although ambient fine particulate matter (PM) has been associated with adverse respiratory outcomes in children, few studies have examined PM constituents with respiratory diseases in children in China.

Objectives: To investigate the associations of short-term exposure to PM and its constituents with pediatric emergency room visits (ERVs) for respiratory diseases in Shanghai, China.

Methods: We collected daily concentrations of PM and its constituents in urban Shanghai from January 1, 2016, to December 31, 2018. Daily pediatric ERVs for four major respiratory diseases, including upper respiratory tract infection, bronchitis, pneumonia, and asthma, were obtained from 66 hospitals in Shanghai during the same period. Associations of exposure to daily PM and constituents with respiratory ERVs were estimated using the over-dispersed generalized additive models.

Result: Short-term exposure to PM and its constituents were associated with increased pediatric ERVs for respiratory diseases. Specifically, an interquartile range increase in the 3-day average PM level (31 μg/m) was associated with 1.86% (95%CI: 0.52, 3.22), 1.53% (95%CI: 0.01, 3.08), 1.90% (95%CI: 0.30, 3.52), and 2.67% (95%CI: 0.70, 4.68) increase of upper respiratory tract infection, bronchitis, pneumonia, and asthma ERVs, respectively. As for PM constituents, we found organic carbon, ammonium, nitrate, selenium, and zinc were associated with higher risk of respiratory ERVs in the single constituent and the constituent-PM models.

Conclusion: Short-term exposure to PM was associated with increased pediatric ERVs for respiratory diseases. Constituents related to anthropogenic combustion and traffic might be the dominant contributors of the observed associations.
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http://dx.doi.org/10.1016/j.ijheh.2021.113805DOI Listing
July 2021

Self-Assembly of 0D-2D Heterostructure Electrocatalyst from MOF and MXene for Boosted Lithium Polysulfide Conversion Reaction.

Adv Mater 2021 Aug 9;33(33):e2101204. Epub 2021 Jul 9.

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.

The design of nanostructured electrocatalysts with high activity and long-term durability for the sluggish lithium polysulfide (LiPS) conversion reaction is essential for the development of high-performance lithium-sulfur (Li-S) batteries. Here, the self-assembly of bimetallic selenides on nitrogen-doped MXene ([email protected]) based on the self-assembly of metal-organic framework and MXene is reported. A combination of 0D CoZn-Se nanoparticles and 2D N-MX nanosheet co-catalysts forms double lithiophilic-sulfifilic binding sites that effectively immobilize and catalytically convert LiPS intermediates. This 0D-2D heterostructure catalyst has a hierarchical porous architecture with a large active area and enables rapid Li ion diffusion, reduces the activation energy of Li S deposition, and lowers the energy barrier of Li S dissolution. In addition, an assembled [email protected] hybrid synergistically prevents the aggregation of the CoZn-Se nanoparticles and restacking of the active areas of N-MX nanosheets during assembly and the LiPS conversion process. The Li-S battery with this 0D-2D catalyst delivers excellent rate capability, ultralong cycling life (over 2000 cycles), and a high areal capacity of 6.6 mAh cm with a low electrolyte/sulfur ratio of 5 µL mg .
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http://dx.doi.org/10.1002/adma.202101204DOI Listing
August 2021

Ultrathin Surface Coating of Nitrogen-Doped Graphene Enables Stable Zinc Anodes for Aqueous Zinc-Ion Batteries.

Adv Mater 2021 Aug 8;33(33):e2101649. Epub 2021 Jul 8.

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Owing to the high volumetric capacity and low redox potential, zinc (Zn) metal is considered to be a remarkably prospective anode for aqueous Zn-ion batteries (AZIBs). However, dendrite growth severely destabilizes the electrode/electrolyte interface, and accelerates the generation of side reactions, which eventually degrade the electrochemical performance. Here, an artificial interface film of nitrogen (N)-doped graphene oxide (NGO) is one-step synthesized by a Langmuir-Blodgett method to achieve a parallel and ultrathin interface modification layer (≈120 nm) on Zn foil. The directional deposition of Zn crystal in the (002) planes is revealed because of the parallel graphene layer and beneficial zincophilic-traits of the N-doped groups. Meanwhile, through the in situ differential electrochemical mass spectrometry and in situ Raman tests, the directional plating morphology of metallic Zn at the interface effectively suppresses the hydrogen evolution reactions and passivation. Consequently, the pouch cells pairing this new anode with LiMn O cathode maintain exceptional energy density (164 Wh kg after 178 cycles) at a reasonable depth of discharge, 36%. This work provides an accessible synthesis method and in-depth mechanistic analysis to accelerate the application of high-specific-energy AZIBs.
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http://dx.doi.org/10.1002/adma.202101649DOI Listing
August 2021

Fine particulate matter constituents and infant mortality in Africa: A multicountry study.

Environ Int 2021 11 30;156:106739. Epub 2021 Jun 30.

School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai 200032, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Fudan University, Shanghai 200030, China. Electronic address:

Background: Few studies have investigated the association between exposure to fine particulate matter (PM) and infant mortality in developing countries, especially for the health effects of specific PM constituents.

Objective: We aimed to examine the association of long-term exposure to specific PM constituents with infant mortality in 15 African countries from 2005 to 2015.

Methods: Based on the Demographic and Health Surveys (DHS) dataset, we included birth history records from 15 countries in Africa and conducted a multicountry cross-sectional study to examine the associations between specific PM constituents and infant mortality. We estimated annual residential exposure using satellite-derived PM for mass and a chemical transport model (GEOS-Chem) for its six constituents, including organic matter (OM), black carbon (BC), sulfate (SO), nitrate (NO), ammonium (NH), and soil dust (DUST). Multivariable logistic regression analysis was employed by fitting single-constituent models, the constituent-PM models, and the constituent-residual models. We also conducted stratified analyses by potential effect modifiers and examined the specific associations for each country.

Results: We found positive and significant associations between PM total mass and most of its constituents with infant mortality. In the single-constituent model, for an IQR increase in pollutant concentrations, the odds ratio (OR) of infant mortality was 1.03 (95 %CI; 1.01, 1.06) for PM total mass, and was 1.04 (95 %CI: 1.02, 1.06), 1.04 (95 %CI: 1.02, 1.05), 1.02 (95 %CI: 1.00, 1.03), 1.04 (1.01, 1.06) for BC, OM, SO, and DUST, respectively. The associations of BC, OM, and SO remained significant in the other two models. We observed larger estimates in subgroups with older maternal age, living in urban areas, using unclean cooking energy, and with access to piped water. The associations varied among countries, and by different constituents.

Conclusions: The carbonaceous fractions and sulfate play a major important role among PM constituents on infant mortality. Our findings have certain policy implications for implementing effective measures for targeted reduction in specific sources (fossil fuel combustion and biomass burning) of PM constituents against the risk of infant mortality.
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http://dx.doi.org/10.1016/j.envint.2021.106739DOI Listing
November 2021

Ambient fine particulate matter air pollution and the risk of preterm birth: A multicenter birth cohort study in China.

Environ Pollut 2021 Oct 22;287:117629. Epub 2021 Jun 22.

Heart Center, Children's Hospital of Fudan University, National Center for Children's Health, Shanghai, China. Electronic address:

Preterm birth (PTB), defined as live birth before the 37th week of gestation, is believed to have profound impacts on the infant's health in later life. Air pollution has been suggested to be a potential risk factor of PTB, but the evidence was inconsistent. In this multicenter birth cohort study, we aimed to examine the association between fine particulate matter (PM) exposure during pregnancy and PTB in China. A total of 5976 live births were identified between Jan. 2009 and Feb. 2011 from 8 provinces in China. Residential exposures to PM were assigned based on satellite remote sensing estimates. Cox proportional hazards regressions were employed to explore the correlation for each trimester as well as the entire pregnancy. A total of 443 (7.4%) preterm births were observed. The average PM during pregnancy was 57.2 ± 8.8 μg/m. We found exposure to PM during the whole pregnancy (hazard ratio, HR = 1.262; 95% CI: 1.087-1.465) and in the first trimester (HR = 1.114; 95% CI: 1.007-1.232) was associated with higher risk of PTB. The associations of PM were stronger for subjects with older maternal or paternal age, lower maternal pre-pregnancy BMI, and lower family income. This study adds supports to the cumulating evidence linking PM exposure and elevated PTB risk. Measures of air pollution reduction are needed during pregnancy, especially at early stage of pregnancy to prevent adverse birth outcomes.
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http://dx.doi.org/10.1016/j.envpol.2021.117629DOI Listing
October 2021

Association of fine particulate matter air pollution and its constituents with lung function: The China Pulmonary Health study.

Environ Int 2021 11 26;156:106707. Epub 2021 Jun 26.

Department of Respiratory and Critical Care Medicine, Beijing Hospital, Beijing, China; National Center of Gerontology, Beijing, China.

The associations of long-term exposure to various constituents of fine particulate matter (≤2.5 μm in aerodynamic diameter, PM) air pollution with lung function were not clearly elucidated in developing countries. The aim was to evaluate the associations of long-term exposure to main constituents of PM with lung function in China. This is a nationwide, cross-sectional analysis among 50,991 study participants from the China Pulmonary Health study. Multivariable linear regression models were used to obtain differences of forced expiratory volume in 1 s (FEV), forced vital capacity (FVC), FEV/FVC, peak expiratory flow (PEF), and forced expiratory flow at 25-75% of exhaled FVC (FEF) associated with an interquartile range (IQR) change of PM or its constituents. Residential annual PM levels varied from 26 μg/m to 92 μg/m (average: 53 μg/m). An IQR increase of PM concentrations was associated with lower FEV (19.82 mL, 95% CI: 11.30-28.33), FVC (17.45 mL, 95% CI: 7.16-27.74), PEF (86.64 mL/s, 95% CI: 59.77-113.52), and FEF (31.93 mL/s, 95% CI: 16.64-47.22). Black carbon, organic matter, ammonium, sulfate, and nitrate were negatively associated with most lung function indicators, with organic matter and nitrate showing consistently larger magnitude of associations than PM mass. This large-scale study provides first-hand epidemiological evidence that long-term exposure to ambient PM and some constituents, especially organic matter and nitrate, were associated with lower large- and small- airway function.
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http://dx.doi.org/10.1016/j.envint.2021.106707DOI Listing
November 2021

The prospective effects of long-term exposure to ambient PM and constituents on mortality in rural East China.

Chemosphere 2021 Oct 4;280:130740. Epub 2021 May 4.

School of Public Health, Key Laboratory of Public Health Safety, NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China. Electronic address:

Few cohort studies explored the associations of long-term exposure to ambient fine particulate matter with an aerodynamic diameter of 2.5 μm or less (PM) and its chemical constituents with mortality risk in rural China. We conducted a 12-year prospective study of 28,793 adults in rural Deqing, China from 2006 to 2018. Annual mean PM and its constituents, including black carbon (BC), organic carbon (OC), ammonium (NH), nitrate (NO), sulfate (SO), and soil dust were measured at participants' addresses at enrollment from a satellite-based exposure predicting model. Cox proportional hazard model was used to estimate hazard ratios (HRs) and 95% confidence intervals (95%CIs) of long-term exposure to PM for mortality. A total of 1960 deaths were identified during the follow-up. We found PM, BC, OC, NH, NO, and SO were significantly associated with an increased risk of non-accidental mortality. The HR for non-accidental mortality was 1.17 (95%CI: 1.07, 1.28) for each 10 μg/m increase in PM. As for constituents, the strongest association was found for BC (HR = 1.21, 95%CI: 1.11, 1.33), followed by NO, NH, SO, and OC (HR = 1.14-1.17 per interquartile range). A non-linear relationship was found between PM and non-accidental mortality. Similar associations were found for cardio-cerebrovascular and cancer mortality. Associations were stronger among men and ever smokers. Conclusively, we found long-term exposure to ambient PM and its chemical constituents (especially BC and NO) increased mortality risk. Our results suggested the importance of adopting effective targeted emission control to improve air quality for health protection in rural East China.
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http://dx.doi.org/10.1016/j.chemosphere.2021.130740DOI Listing
October 2021

Personal exposure to fine particulate matter and blood pressure: Variations by particulate sources.

Chemosphere 2021 Oct 27;280:130602. Epub 2021 Apr 27.

School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China; Key Laboratory of Reproduction Regulation of National Population and Family Planning Commission, Shanghai Institute of Planned Research, Institute of Reproduction and Development, Fudan University, Shanghai, China. Electronic address:

Fine particulate matter (PM) is a complex mixture of components which has been associated with various cardiovascular effects, such as elevated blood pressure (BP). However, evidences on specific sources behind these effects remain uncertain. Based on 140 72-h personal measurements among a panel of 36 health college students in Shanghai, China, we assessed associations between source-apportioned PM exposure and BP changes. Based on personal filter samples, PM source apportionment was conducted using Positive Matrix Factorization (PMF) model. Linear mixed-effects models were applied to evaluate associations of source-specific PM exposure with BP changes. Seven sources were identified in PMF analysis. Among them, secondary sulfate (41%) and nitrate (24%) sources contributed most to personal PM, followed by industrial emissions (15%), traffic-related source (10%), coal combustion (6.2%), dust (2.4%) and aged sea salt (1.1%). We found nitrate, traffic-related source and coal combustion were significantly associated with increased BP. For example, an interquartile range increase in PM from traffic-related source was significantly associated with increase in systolic BP [1.5 (95% CI: 0.26, 2.7) mmHg], diastolic BP [1.2 (95% CI: 0.10, 2.2) mmHg] and mean arterial pressure [1.2 (95% CI: 0.15, 2.2) mmHg]. This is the first investigation linking personal PM source profile and BP changes. This study provides evidence that several anthropogenic emissions (especially traffic-related emission) may be particularly responsible for BP increases, and highlights that the importance of development of health-oriented PM source control strategies.
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http://dx.doi.org/10.1016/j.chemosphere.2021.130602DOI Listing
October 2021

Evaluating carbon content in airway macrophages as a biomarker of personal exposure to fine particulate matter and its acute respiratory effects.

Chemosphere 2021 Nov 14;283:131179. Epub 2021 Jun 14.

School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, 200032, China; Shanghai Typhoon Institute/CMA, Shanghai Key Laboratory of Meteorology and Health, Shanghai, 200030, China. Electronic address:

It remains unclear whether carbon content in airway macrophages (AM) can predict personal short-term exposure to fine particulate matter (PM) air pollution and its respiratory health effects. We aimed to evaluate the pathway from personal PM exposure to adverse respiratory outcomes through AM carbon content. We designed a longitudinal panel study with 3 scheduled follow-ups among 113 non-smoking patients of chronic obstructive pulmonary disease in Shanghai, China, from April 2017 to January 2019. We quantified AM carbon content from induced sputum by image analysis, tested lung function and measured sputum levels of 4 pro-inflammatory cytokines and 2 anti-inflammatory cytokines. We applied the "meet in the middle" approach incorporating linear mixed-effect models to evaluate the associations from external PM exposure to respiratory outcomes through AM carbon content. Our results indicated that personal exposure to PM within 24 h was significantly associated with decreased forced expiratory volume in 1s and anti-inflammatory cytokines, as well as increased macrophages and pro-inflammatory cytokines. These changes were accompanied by increased areas of AM carbon and higher percentage of AM area occupied by carbon, both of which were associated with increased levels of pro-inflammatory cytokines and decreased levels of anti-inflammatory cytokines. Exposure to ambient black carbon and organic carbon in PM within 2 days was significantly associated with increased AM carbon area and percentage of AM area occupied by carbon. Our findings reinforced the causality in respiratory health effects of PM in which increased AM carbon content might serve as a valid exposure biomarker.
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http://dx.doi.org/10.1016/j.chemosphere.2021.131179DOI Listing
November 2021

Associations of residential greenness with peripheral and central obesity in China.

Sci Total Environ 2021 Oct 28;791:148084. Epub 2021 May 28.

China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China.

Background: Obesity is a well-known risk factor for public health. Recent studies found that greenness exposure may protect against obesity. However, the accumulated evidence on associations of greenness-obesity is inconsistent and most of them are from developed countries.

Objectives: This study aimed to evaluate the associations of greenness exposure with indicators of peripheral and central obesity.

Methods: This cross-sectional study was based on a Chinese national Sub-Clinical Outcomes of Polluted Air (SCOPA) prospective cohort across 15 provinces, and 5849 participants with average age of 64.7 were included. Surrounding greenness was estimated with the Enhanced Vegetation Index (EVI), which was calculated at each participant's residential addresses within a 250 m buffer. Weight, height and waist circumference (WC) were measured, and body mass index (BMI) and the waist-to-height ratio% (WHtR%) were calculated based on those measurements. The relationships between EVI and obese outcomes were explored using multiple linear regression and logistic regression models.

Results: Non-linear associations were observed between EVI and obese indicators. Participants living in Quartile 3 benefited more than in Quartile 4 compared to the lowest quartile (Quartile 1) of greenness. For peripheral obesity, participants living in Quartile 3 of EVI had 0.86 kg/m (β -0.86, 95% CI: -1.10, -0.61) lower BMI, and 46% (OR 0.54, 95% CI: 0.44-0.66) lower odds of peripheral obesity than in Quartile 1. For central obesity, participants living in Quartile 3 of EVI had 1.85 cm (β -1.85, 95% CI: -2.54, -1.15) lower waist circumference, 1.12% (β -1.12, 95% CI: -1.56, -0.67) lower waist-to-height ratio% (WHtR%), and 33% (OR 0.67, 95% CI: 0.57-0.78) lower odds of central obesity than in Quartile 1 of EVI.

Conclusions: Higher levels of greenness were statistically significant associated with lower obesity risk.
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http://dx.doi.org/10.1016/j.scitotenv.2021.148084DOI Listing
October 2021

Strong Interfacial Adhesion between the LiS Cathode and a Functional LiPCeSCl Solid-State Electrolyte Endowed Long-Term Cycle Stability to All-Solid-State Lithium-Sulfur Batteries.

ACS Appl Mater Interfaces 2021 Jun 14;13(24):28270-28280. Epub 2021 Jun 14.

Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.

The extrinsic cathode interface between the sulfide electrolyte and the LiS electrode is always ignored in all-solid-state lithium-sulfur batteries. However, the aggregation of the LiS cathode is still observed during cycling. The gradually lost extrinsic contact interface between the cathode and the electrolyte would result in considerable interface resistance and severe capacity decay in the cell due to the lack of efficient electron and ionic conduction at the interface. Herein, a facile dual-doping strategy demonstrates the synthesis of a functional inorganic electrolyte. The obtained LiPCeSCl glass-ceramic electrolyte shows a higher-lithium-ionic conductivity of 3.2 mS cm at room temperature. Further, UV-vis absorption and ex situ scanning electron microscopy studies confirm robust interfacial adhesion between the functional inorganic electrolyte, LiPCeSCl, and the LiS cathode. Thus, a stable extrinsic cathode interface is unprecedently built. Finally, the all-solid-state lithium-sulfur battery based on the LiPCeSCl electrolyte delivers a higher reversible initial capacity of 617 mA h g, a lower interface resistance of 25 Ω cm and much better cycling stability (with a high capacity retention of 89% after 100 cycles) than the pristine LiPS electrolyte.
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http://dx.doi.org/10.1021/acsami.1c06328DOI Listing
June 2021

Mesh Total Generalized Variation for Denoising.

IEEE Trans Vis Comput Graph 2021 Jun 11;PP. Epub 2021 Jun 11.

Recent study has shown that the Total Generalized Variation (TGV) is highly effective in preserving sharp features as well as smooth transition variations for image processing tasks. However, currently there is no existing work that is suitable for applying TGV to 3D data, in particular, triangular meshes. In this paper, we develop a novel framework for discretizing second-order TGV on triangular meshes. Further, we propose a TGV-based variational method for the denoising of face normal fields on triangular meshes. The TGV regularizer in our method is composed of a first-order term and a second-order term, which are automatically balanced. The first-order term allows our TGV regularizer to locate and preserve sharp features, while the second-order term allows to recognize and recover smoothly curved regions. To solve the optimization problem, we introduce an efficient iterative algorithm based on variable-splitting and augmented Lagrangian method. Extensive results and comparisons on synthetic and real scanning data validate that the proposed method outperforms the state-of-the-art visually and numerically.
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http://dx.doi.org/10.1109/TVCG.2021.3088118DOI Listing
June 2021

Efficient and Stable Perovskite Solar Cells Using Bathocuproine Bilateral-Modified Perovskite Layers.

ACS Appl Mater Interfaces 2021 Jun 21;13(21):24747-24755. Epub 2021 May 21.

Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, P. R. China.

Surface modification engineering is an effective method to improve the crystallinity and passivate the perovskite interface and grain boundary, which can improve the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). The typical interface modification method is usually introduced at the interface of the perovskite/hole transport layer (HTL) or perovskite/electron transport layer (ETL) through coordination of the groups in the material with the perovskite. In this work, the n-type semiconductor bathocuproine (BCP) including the pyridine nitrogen bond was modified at the interfaces of perovskite/HTL or perovskite/ETL to improve perovskite crystallinity and interface contact properties. The better crystallinity and superior interface contact properties are obtained using BCP unilateral modification, which obviously increases the PCEs of PSCs. The BCP bilateral modification at both perovskite/ETL and perovskite/HTL interfaces can further improve the crystallinity with fewer defects and superior contact properties, which show the largest (1.14 V) and fill factors (FF 77.1%) compared to PSCs with BCP unilateral modification. PSCs with BCP bilateral modification obtained 20.6% PCEs, which is greatly higher than that (17.5%) of the original PSCs. The stability of PSCs with BCP bilateral modification can be greatly improved due to the better crystal quality and hydrophobic property of the interfaces. The results demonstrated that the n-type BCP material can efficiently modify both perovskite/HTL and perovskite/ETL interfaces beyond its semiconductor type, which can greatly improve the PCEs and stability of PSCs because BCP modification can passivate interfaces, improve interface contact and hydrophobic properties, promote crystallinity of the perovskite layer with fewer defects, and block carrier recombination at both interfaces.
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http://dx.doi.org/10.1021/acsami.1c03637DOI Listing
June 2021

Mesoscopic TiNbO cages comprised of nanorod units as high-rate lithium-ion battery anode.

J Colloid Interface Sci 2021 Oct 30;600:111-117. Epub 2021 Apr 30.

Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China. Electronic address:

Benefiting from large tunnel structure, zero strain feature, and excellent pseudocapacitive performance, TiNbO was considered as a potential anode material for lithium-ion batteries (LIBs). Herein, TiNbO cages comprised of nanorod units were elaborately designed. The mesoscopic structure could effectively shorten the ion diffusion pathway, and the big central electrolyte reservoir relieves the concentration polarization of electrolyte. Moreover, the perforated pore feature guarantees competent contact between electrolyte and framework. As the anode of LIBs, the mesoscopic TiNbO cages deliver high reversible capacity (302.5 mAh/g) and rate capability (134.3 mAh/g at 30 A/g). This unique mesoscopic structure holds excellent potential for the electrode design of high-rate and long-life LIBs.
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http://dx.doi.org/10.1016/j.jcis.2021.04.136DOI Listing
October 2021

Enhanced Electrochemical Kinetics with Highly Dispersed Conductive and Electrocatalytic Mediators for Lithium-Sulfur Batteries.

Adv Mater 2021 Jun 13;33(25):e2100810. Epub 2021 May 13.

Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Lithium-sulfur (Li-S) batteries are promising energy-storage devices because of their high theoretical energy densities. However, the practical application of Li-S batteries is still impeded by the poor cycling performance and rate capability at practical conditions. In order to improve the performance of practical Li-S batteries, a hierarchical Mo C nanocluster/carbon nanosheets hybrid based hollow spherical material (Mo C/CHS) is designed and prepared. The hollow spheres composed of stacked carbon nanosheets can facilitate the infiltration of electrolyte. The ultrasmall and highly conductive Mo C nanocrystals are confined in the carbon nanosheets and expose more active sites for anchoring and conversion of lithium polysulfides and increase the number of the nuclei for Li S /Li S precipitation. Benefitting from the synergistic effects, Mo C/CHS greatly promotes electrochemical kinetics in Li-S batteries with high sulfur loading (5 mg cm ). Even under lean electrolyte conditions (E/S = 7 μL mg ), the Li-S batteries with Mo C/CHS added exhibit a discharge capacity of 904 mAh g at the high current rate of 0.5 C, and with 894 mAh g maintained after 200 cycles. This work provides a fundamental understanding of the electrochemical processes and guides the rational design of host and additive materials for practical Li-S batteries.
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http://dx.doi.org/10.1002/adma.202100810DOI Listing
June 2021

Advanced Li-S Batteries Enabled by a Biomimetic Polysulfide-Engulfing Net.

ACS Appl Mater Interfaces 2021 May 12;13(20):23811-23821. Epub 2021 May 12.

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China.

Lithium-sulfur batteries are attractive because of their high specific capacity and energy density, but issues with the polysulfide dissolution and shuttling intrinsically hinder their wide application. Here, hydroxylate multiwalled carbon nanotubes (MWCNT-OH) were grafted with a supramolecular polymer (heptakis(6-amino-6-deoxy)-β-cyclodextrin) to form a polysulfide-engulfing net, which was coated on a separator. Such a molecular microarray structure of a polymer can block the polysulfides and have biomimetic cellular behavior for engulfing polysulfides. The cavity (∼6 Å) and functional groups of the supramolecular polymer can provide a dynamic structure for reversible adsorption of polysulfides while the conductive MWCNT-OH ensure fast electron transfer. The batteries with the modified separator exhibited excellent rate capacities (945.5 and 625.4 mA h g at 2 C and 4 C rates, respectively). Especially, the high areal capacities of 5.86 and 7.2 mA h cm achieved at S loadings of 4.5 and 6.0 mg cm and good cycling stability after 200 cycles at 0.1 C can be obtained. This demonstrates a strategy of supramolecular polymer-grafted carbon for dynamic polysulfide adsorption toward advanced Li-S batteries.
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http://dx.doi.org/10.1021/acsami.1c04872DOI Listing
May 2021

Associations of fine particulate matter and its constituents with airway inflammation, lung function, and buccal mucosa microbiota in children.

Sci Total Environ 2021 Jun 4;773:145619. Epub 2021 Feb 4.

School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, Shanghai 200032, China; Shanghai Typhoon Institute/CMA, Shanghai, Key Laboratory of Meteorology and Health, Shanghai, 200030, China. Electronic address:

Background: Previous studies have suggested acute effects of ambient fine particulate matter (PM) air pollution on respiratory health among children, but evidence for PM constituents and respiratory health were still limited.

Objectives: To investigate associations of short-term exposure to PM and its constituents with airway inflammation, lung function, and airway microbiota in children.

Methods: We conducted a longitudinal panel study with 3 repeated health measurements among 62 children in Shanghai, China from November 2018 to June 2019. Respiratory health was measured by fractional exhaled nitric oxide (FeNO), saliva tumor necrosis factor-α (TNF-α), lung function (forced vital capacity and forced exhaled volume in 1 s), and microbiota diversity in buccal mucosa samples. Based on the linear mixed-effect models, we applied the single-constituent models and the constituent-PM adjustment models to examine the associations between PM constituents and health outcomes.

Result: Short-term exposure to PM was associated with higher TNF-α, FeNO levels and reduced lung function. Among all constituents, organic carbon, elemental carbon, NO and NH had the consistent and strongest associations with airway inflammation biomarkers and lung function parameters, followed by metallic elements. We also found short-term PM exposure was associated with decreased diversity in buccal mucosa bacterial community and two bacterial phyla, Fusobacteria and Proteobacteria, were identified as differential microbes with PM exposure.

Conclusion: Short-term exposure to PM may impair children's respiratory health represented by higher airway inflammation, lower lung function and altered buccal mucosa microbial colonization. Organic carbon, elemental carbon, NO and NH may dominate these effects.
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http://dx.doi.org/10.1016/j.scitotenv.2021.145619DOI Listing
June 2021

A Truncated TIR-NBS Protein TN10 Pairs with Two Clustered TIR-NBS-LRR Immune Receptors and Contributes to Plant Immunity in .

Int J Mol Sci 2021 Apr 13;22(8). Epub 2021 Apr 13.

State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China.

The encoding genes of plant intracellular nucleotide-binding site (NBS) and leucine-rich repeat (LRR) domain receptors (NLRs) often exist in the form of a gene cluster. Several recent studies demonstrated that the truncated Toll/interleukin-1 receptor-NBS (TIR-NBS) proteins play important roles in immunity. In this study, we identified a large gene cluster on ecotype Col-0 chromosome 1, which included nine genes, to . Interestingly, this cluster also contained two typical genes: and (hereinafter referred to as and respectively), which formed head-to-head genomic arrangement with to . However, the functions of these and genes in this cluster are still unknown. Here, we showed that the TIR domains of both TNL40 and TNL60 associated with TN10 specifically. Furthermore, both TNL40TIR and TNL60TIR induced cell death in leaves. Subcellular localization showed that TNL40 mainly localized in the cytoplasm, whereas TNL60 and TN10 localized in both the cytoplasm and nucleus. Additionally, the expression of , , and were co-regulated after inoculated with bacterial pathogens. Taken together, our study indicates that the truncated TIR-NBS protein TN10 associates with two clustered TNL immune receptors, and may work together in plant disease resistance.
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http://dx.doi.org/10.3390/ijms22084004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8069298PMC
April 2021

The Acute Effect of Diesel Exhaust Particles and Different Fractions Exposure on Blood Coagulation Function in Mice.

Int J Environ Res Public Health 2021 04 14;18(8). Epub 2021 Apr 14.

Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai 200032, China.

The toxicity and widespread exposure opportunity of diesel exhaust particles (DEP) has aroused public health concerns. This study aimed to investigate the acute effect of DEP and different fractions exposure on blood coagulation function in mice. In this study, nine- week-old C57BL/6J male mice were divided into four exposure groups (with 15 mice in each group). The water-soluble (WS) and water-insoluble (WIS) fractions of DEP were isolated, and intratracheal instillation was used for DEP, WS and WIS exposure. The phosphate buffer saline (PBS) exposure group was set as the control group. After 24 h exposure, the mice were sacrificed for blood routine, coagulation function and bleeding time examinations to estimate the acute effect of DEP, WS and WIS exposure on the blood coagulation function. In our results, no statistically significant difference in weight of body, brain and lung was observed in different exposure groups. While several core indexes in blood coagulation like bleeding time (BT), fibrinogen (FIB), activated partial thromboplastin time (APTT) and prothrombin time (PT) altered or showed a lower tendency after DEP, WS and WIS exposure. For example, BT was lower In WIS exposure group (211.00 s) compared with PBS exposure group (238.50 s) ( < 0.01), and FIB was lower in WS exposure group (233.00 g/L) compared with PBS exposure group (249.50 g/L) ( < 0.05). Additionally, systemic inflammation-related indexes like white blood cell count (WBC), neutrophil count (NEUT), lymphocyte count (LYMPH) altered after DEP, WS and WIS exposure. In conclusion, DEP, WS and WIS fractions exposure could result in the hypercoagulable state of blood in mice. The noteworthy effects of WS and WIS fractions exposure on blood coagulation function deserve further investigation of the potential mechanism.
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http://dx.doi.org/10.3390/ijerph18084136DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8070753PMC
April 2021

Bimetallic Antimony-Vanadium Oxide Nanoparticles Embedded in Graphene for Stable Lithium and Sodium Storage.

ACS Appl Mater Interfaces 2021 May 28;13(18):21127-21137. Epub 2021 Apr 28.

Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science & Engineering, Beijing Institute of Technology, Beijing 100081, China.

Bimetallic oxides have received considerable attention as anodes for lithium/sodium-ion batteries (LIBs/SIBs) due to their high electrochemical activity and theoretical specific capacity. However, their cycling performance is limited by large volume variation, severe aggregation, and pulverization of bimetallic oxide nanoparticles during repeated metal ion insertion/extraction processes. Herein, bimetallic antimony-vanadium oxide nanoparticles embedded in graphene (SbVO/G) composites are prepared by a one-step hydrothermal method. Bimetallic SbVO with abundant redox reaction sites can provide high specific capacity by a multi-electron reaction. A robust graphene substrate can not only alleviate volume expansion but also prevent aggregation and collapse of highly active bimetallic SbVO. Due to the excellent synergy between the two building components, SbVO/G hybrids exhibit excellent electrochemical activity, structural stability, and electrochemical performance. When employed as anodes for LIBs and SIBs, SbVO/G composites display excellent cycling performance (1079.5 mAh g at 0.1 A g after 150 cycles for LIBs and 401.6 mAh g at 0.1 A g after 450 cycles for SIBs) and impressive rate capability. This work demonstrates that SbVO/G composites are promising anodes for both LIBs and SIBs.
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http://dx.doi.org/10.1021/acsami.0c21676DOI Listing
May 2021

Synergy Effect of Trimethyl Borate on Protecting High-Voltage Cathode Materials in Dual-Additive Electrolytes.

ACS Appl Mater Interfaces 2021 May 27;13(18):21459-21466. Epub 2021 Apr 27.

Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

The lack of electrolyte that is stable under high potentials hinders the application of high-voltage cathode materials for lithium batteries; the introduction of electrolyte additives is clearly the most effective solution to address this issue. Herein, we investigated the synergistic effects of trimethyl borate (TMB) in two dual-additive electrolytes on protecting the LiNiCoMnO and LiCoO cathode materials under high potentials. The interactions of TMB with fluoroethylene carbonate and the catalysis of the decomposition product of TMB to tetramethylene sulfone lower the onset oxidation potential of these additives and are beneficial in forming a stable cathode electrolyte interphase film on the cathode materials. This work sheds light on another way of electrolyte designing for high-voltage cathode materials.
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http://dx.doi.org/10.1021/acsami.1c04389DOI Listing
May 2021
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