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Bi^(3+)-activated dual-wavelength emitting phosphors toward effective optical thermometry

Chinese Chemical Letters 2024年第3期35卷 486-492页

作者： Yu Xue Yuqi chen Guixian Li Weixi Xia Qinan Mao Lang Pei Meijiao Liu Liang Chu Jiasong Zhong Center of Advanced Optoelectronic Materials College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310018China College of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China department of Chemistry Zhejiang Sci-Tech UniversityHangzhou 310018China

Optical thermometry as an important local temperature-sensing technique,has received increasing attention in scientific and industrial ***,it is still a big challenge to develop luminescent materials with self-activated dual-wavelength emissions toward high-sensitivity optical ***,a novel ratiometric thermometric strategy of Bi^(3+)-activated dual-wavelength emission band was realized in the same lattice position with two local electronic states of La_(3)Sb_(1-x)Ta_xO_(7):Bi^(3+)(0≤x≤1.0)materials based on the different temperature-dependent emission behaviors,benefiting from the highlysensitive and regulable emission to the coordination environment of Bi^(3+).The structural and spectral results demonstrate that the emission tremendously shifted from green to blue with 68 nm and the intensity was enhanced 2.6 ***,the visual dual-wavelength emitting from two emission centers was presented by increasing the Ta^(5+)substitution concentration to 20%or 25%,mainly originating from the two local electronic states around the Bi^(3+)emission ***,the dual-wavelength with different thermal-quenching performance provided high-temperature sensitivity and good discrimination signals for optical thermometry in the range between 303 and 493 *** maximum relative sensitivity reached 2.64%/K(La_(3)Sb_(0.8)Ta_(0.2)O_(7):0.04Bi^(3+)@383 K)and 1.91%/K(La_(3)Sb_(0.75)Ta_(0.25)O_(7):0.04Bi^(3+)@388 K).This work reveals a rational design strategy of different local electronic states around the singledoping multiple emission centers towards practical applications,such as luminescence thermometry and white LED lighting.

关键词： Dual-wavelength emitting Cationic substitution Two local electronic states Optical thermometry Bi^(3+)-doped phosphor

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Impact of Air Pollutants on Lung Function and Inflammatory Response in Asthma in Shanghai

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Biomedical and environmental sciences 2024年第8期37卷 811-822页

作者： Guifang Wang Youzhi Zhang Haiyan Yang Yi Yang Liang Dong Peng Zhang Jie Liu Xiaodong chen Yi Gong department of Respiratory and Critical Care Medicine Quzhou People's HospitalQuzhou 324000ZhejiangChina department of Respiratory and Critical Care Medicine Huashan Hospital Affiliated to Fudan UniversityShanghai 200040China Centre of Hydrogen science Shanghai Jiao Tong University&Key Lab of Hydrogen ScienceShanghai 200240China department of Respiratory and Critical Care Medicine Shanghai Public Health Clinical CentreFudan UniversityShanghai 201508China

Objective Air pollution is a leading public health *** study investigated the effect of air quality and pollutants on pulmonary function and inflammation in patients with asthma in *** The study monitored 27 asthma outpatients for a year,collecting data on weather,patient self-management[daily asthma diary,peak expiratory flow(PEF)monitoring,medication usage],spirometry and serum *** explore the potential mechanisms of any effects,asthmatic mice induced by ovalbumin(OVA)were exposed to PM_(2.5).Results Statistical and correlational analyses revealed that air pollutants have both acute and chronic effects on *** exposure showed a correlation between PEF and levels of ozone(O_(3))and nitrogen dioxide(NO_(2)).Chronic exposure indicated that interleukin-5(IL-5)and interleukin-13(IL-13)levels correlated with PM_(2.5)and PM_(10)*** asthmatic mouse models,exposure to PM_(2.5)increased cytokine levels and worsened lung ***,PM_(2.5)exposure inhibited cell proliferation by blocking the NF-κB and ERK phosphorylation *** Ambient air pollutants exacerbate asthma by worsening lung function and enhancing Th2-mediated ***,PM_(2.5)significantly contributes to these adverse *** research is needed to elucidate the mechanisms by which PM_(2.5)impacts asthma.

关键词： Ambient air pollutants Acute and chronic effects on asthma PM_(2.5) OVA-induced asthmatic mice

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Highly efficient ternary organic solar cells with excellent open-circuit voltage and fill factor via precisely tuning molecular stacking and morphology

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science china Chemistry 2024年第3期67卷 963-972页

作者： Dinghong Sun Zhenyu chen Jianfeng Zhang Wei Song Jingyu Shi Jintao Zhu Yuanyuan Meng Fei Jin Shuncheng Yang Ziyi Ge Faculty of Electrical Engineering and Computer science Ningbo UniversityNingbo 315211China Faculty of Material science and Chemical Engineering Ningbo UniversityNingbo 315211China zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Center of Materials science and Optoelectronics Engineering university of Chinese Academy of sciences Beijing 100049China department of Chemical and environmental Engineering University of Nottingham NingboNingbo 315100China

The micro-morphology and molecular stacking play a key role in determining the charge transport process and nonradiative energy loss, thus impacting the performances of organic solar cells(OSCs). To address this issue, a non-fullerene acceptor PhC6-IC-F with alkylbenzene side-chain, possessing optimized molecular stacking, complementary absorption spectra and forming a cascade energy level alignment in the PM6:BTP-eC9 blend, is introduced as guest acceptor to improve efficiency of ternary OSCs. The bulky phenyl in the side-chain can regulate crystallinity and optimizing phase separation between receptors in ternary blend films, resulting in the optimal phase separations in the ternary films. As a result, high efficiencies of 18.33% as photovoltaic layer are obtained for PhC6-IC-F-based ternary devices with excellent fill factor(FF) of 78.92%. Impressively, the ternary system produces a significantly improved open circuit voltage(V_(oc)) of 0.857 V compared with the binary device,contributing to the reduced density of trap states and suppressed non-radiative recombination result in lower energy loss. This work demonstrates an effective approach for adjusting the aggregation, molecular packing and fine phase separation morphology to increase V_(oc) and FF, paving the way toward high-efficiency OSCs.

关键词： alkylbenzene side-chain morphology regulation ternary blends organic solar cells

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Rotating tank experiments for the study of geophysical fluid dynamics

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Journal of Oceanology and Limnology 2024年第5期42卷 1385-1398页

作者： Changming DONG Xiaojie LU Yuli LIU Guoqing HAN Minghan FU Qian CAO Yang ZHANG Xu chen Yeping YUAN International Geophysical Fluid Dynamics Laboratory Nanjing University of Information Science and TechnologyNanjing 210044China department of Atmospheric and Oceanic sciences University of CaliforniaLos Angeles CA 90095USA State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Southern Marine science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China zhejiang Ocean university Zhoushan 316022China Guangdong Ocean university Zhanjiang 524088China Ocean university of china Qingdao 266100China zhejiang university Hangzhou 310058China

Geophysical fluid dynamics(GFD)is an interdisciplinary field that studies the large-scale motion of fluids in the natural *** a wide range of applications such as weather forecasts and climate prediction,GFD employs various research approaches including in-situ observations,satellite measurements,numerical simulations,theoretical analysis,artificial intelligence,and physical model experiments in *** these approaches,rotating tank experiments provide a valuable tool for simulating naturally-occurring fluid motions in *** proportional scaling and proper techniques,scientists can reproduce multi-scale physical processes of stratified fluids in the rotation system,which allows for the simulation of essential characteristics of fluid motions in the atmosphere and *** this review,rotating tanks of various scales in the world are introduced,as these tanks have been actively used to explore fundamental scientific questions in ocean and atmosphere *** illustrate the GFD experiments,three representative cases are presented to demonstrate the frontier achievements in the the GFD study by using rotating tank experiments:mesoscale eddies in the ocean,convection processes,and plume *** references for the experimental procedures are *** studies are encouraged to further explore the utilization of rotating tanks with improvements in experimental design and integration of other research *** is a promising direction of GFD to help enhance our understanding of the complex nature of fluid motions in the natural world and to address the challenges posed by global environmental changes.

关键词： laboratory experiment rotating tank geophysical fluid dynamics(GFD)

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Large contributions of emission reductions and meteorological conditions to the abatement of PM_(2.5)in Beijing during the 24th Winter Olympic Games in 2022

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Journal of environmental sciences 2024年第2期136卷 172-188页

作者： Yaping Jiang Shaocai Yu Xue chen Yibo Zhang Mengying Li Zhen Li Zhe Song Pengfei Li Xiaoye Zhang Eric Lichtfouse Daniel Rosenfeld Key Laboratory of environmental Remediation and Ecological Health Ministry of EducationResearch Center for Air Pollution and HealthCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China College of science and Technology Hebei Agricultural UniversityBaoding 071000China Chinese Academy of Meteorological sciences China Meteorological AdministrationBeijing 100081China Aix-Marseille Univ CNRSColl FranceCNRSIRDINRAEEuropole Mediterraneen de l’ArboisAvenue Louis Philibert13100 Aix en ProvenceFrance Xi’an Jiaotong university State Key Laboratory of Multiphase Flow in Power EngineeringXi’an 710049China Institute of Earth sciences The Hebrew University of JerusalemJerusalemIsrael

To guarantee the blue skies for the 2022 Winter Olympics held in Beijing and Zhangjiakou from February 4 to 20,Beijing and its surrounding areas adopted a series of emission control *** provides an opportunity to determine the impacts of large-scale temporary control measures on the air quality in Beijing during this special ***,we applied the WRF-CMAQ model to quantify the contributions of emission reduction measures and meteorological *** show that meteorological conditions in 2022 decreased PM_(2.5)in Beijing by 6.9 and 11.8μg/m^(3)relative to 2021 under the scenarios with and without emission reductions,*** emission reduction measures implemented in Beijing and seven neighboring provinces resulted in an average decrease of 13.0μg/m^(3)(-41.2%)in PM_(2.5)in *** the entire period,local emission reductions contributed more to good air quality in Beijing than nonlocal emission *** the emission reduction scenario,local,controlled regions,other regions,and boundary conditions contributed 47.7%,42.0%,5.3%,and 5.0%to the PM_(2.5)concentrations in Beijing,*** results indicate that during the cleaning period with the air masses from the northwest,the abatements of PM_(2.5)were mainly caused by local emission ***,during the potential pollution period with the air masses from the east-northeast and west-southwest,the abatements of PM_(2.5)were caused by both local and nonlocal emission reductions almost *** implies that regional coordinated prevention and control strategies need to be arranged scientifically and rationally when heavy pollution events are forecasted.

关键词： PM_(2.5) WRF-CMAQ Meteorological conditions Emission reductions Winter Olympic games

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Spatial Distribution of Zinc in the Surface Sediments of Love River Estuary,Taiwan

Spatial Distribution of Zinc in the Surface Sediments of Lov...

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2012年环境污染与大众健康学术会议

作者： cheng-Di Dong, Chih-Feng chen, Chiu-Wen chen department of Marine environmental Engineering, National Kaohsiung Marine university, Kaohsiung, Taiwan, Republic of china

The spatial distribution, enrichment, and accumulation of Zinc （Zn） in the surface sediments of Love River estuary, Taiwan, were studied. Results show that samples collected from ten stations near the estuary of Love River contain 426-962 mg/kg of Zn with average of 712±196 mg/kg. The spatial distribution of Zn reveals is relatively high in the river mouth region, and gradually diminishes toward the harbor region. This indicates that upstream industrial and municipal wastewater discharges along the river bank are major sources of pollution. Enrichment factor analysis indicates that the sediments of Love River estuary were severe enrichment with Zn. Geo-accumulation index analysis indicates that the sediments of Love River estuary were moderately strong accumulated with Zn. Base on the comparison with sediment quality guidelines （SQGs）, the concentrations of Zn in the sediments of Love River estuary may cause acute biological damage.

关键词： Accumulation Enrichment Sediment Sediment Quality Guidelines (SQGs) Zinc

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Biosorption and biodegradation of polycyclic aromatic hydrocarbons by Phanerochaete chrysosporium in aqueous solution

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Chinese science Bulletin 2013年第24期58卷 613-621页

作者： DING Jie chen baoliang ZHU LiZhong department of environmental science Zhejiang University zhejiang Provincial Key Laboratory of Organic Pollution Process and Control

Biosorption and biodegradation of phenanthrene and pyrene by live and heat-killed Phanerochaete chrysosporium are investigated to elucidate the bio-dissipation mechanisms of polycyclic aromatic hydrocarbons(PAHs) in aqueous solution and its regulating *** effects of nutrient conditions(carbon source and nitrogen source concentrations),the co-existing Cu 2+,and repeated-batch feed of PAHs on the biosorption and biodegradation are systematically *** removal of PAHs by dead bodies of *** is attributed to biosorption only,and the respective partition coefficients of phenanthrene and pyrene are 4040 and 17500 L/*** biosorption and biodegradation contribute to the dissipation of PAHs by live *** in *** a 3-d incubation,the removal percentage via biosorption are 19.71% and 52.21% for phenanthrene and pyrene,*** the increase of the incubation time(3 40 d),biodegradation gradually increases from 20.40% to 60.62% for phenanthrene,and from 15.55% to 49.21% for ***,the stored-PAHs in the fungal bodies *** the carbon-rich and nitrogen-limit nutrient conditions,the removal efficiency and biodegradation of phenanthrene and pyrene are significantly promoted,i.e.99.55% and 92.77% for phenanthrene,and 99.47% and 83.97% for pyrene after a 60-d *** phenomenon is ascribed to enhanced-biosorption due to the increase of fungal biomass under carbon-rich condition,and to stimulated-biodegradation under nitrogen-limit *** the repeated-batch feed of phenanthrene,the pollutant is continuously removed by live ***,and the contribution of biodegradation is enhanced with the repeated *** 3 cycles,the biodegradation percentage is up to 90% with each cycle of a 6-d incubation.

关键词：生物降解生物吸附多环芳烃水溶液白腐菌耗散机制营养条件多环芳香烃

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Suppression of host plant defense by bacterial small RNAs packaged in outer membrane vesicles

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Plant Communications 2024年第4期5卷 252-254页

作者： Yan Wu Sai Wang Peihong Wang Wenhan Nie Iftikhar Ahmad Panagiotis F.Sarris Gongyou chen Bo Zhu Shanghai Yangtze River Delta Eco-environmental Change and Management Observation and Research Station Shanghai Cooperative Innovation Center for Modern Seed Industry School of Agriculture and Biology Shanghai Jiao Tong University Shanghai China department of environmental sciences COMSATS University Islamabad Vehari-Campus Vehari 61100 Pakistan department of Biology University of Crete 714 09 Heraklion Crete Greece Shanghai Jiao Tong university Chongqing Research Institute Shanghai China

(Plant Communications 5,100817;April 82024)After a careful,in-depth examination,the authors found some additional errors in the published *** revision,the authors created a mutant DXosr001(in which the full-length Xosr001 was deleted)and a mutant DXosr001’(in which the predicted binding motif of Xosr001 was deleted)as shown in Figure S4 of the original *** RNA-FISH assays,Xosr001 transcript could not be detected in leaves inoculated with DXosr001-OMVs,while leaves inoculated with WT-and DXosr001’-OMVs could emit green fluorescence.

关键词： deleted Figure outer

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Analysis and Characterization of the GABA Transaminase and Succinate Semialdehyde Dehydrogenase Genes in the Microalga Isochrysis zhanjiangensis in Response to Abiotic Stresses

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Journal of Ocean university of china 2024年第3期23卷 775-785页

作者： TIAN Jiaojiao ZHANG Lin LU Xinyue YE Lingzhi WU Yuanyuan chen Deshui CAO Jiayi JIANG Jiaxin XU Jilin YAN Xiaojun Key Laboratory of Marine Biotechnology of zhejiang Province School of Marine SciencesNingbo UniversityNingbo 315211China Key Laboratory of Aquacultural Biotechnology Ministry of Education Ningbo UniversityNingbo 315211China Laizhou Bay Marine Technology Co. Ltd.Yantai 261400China Fujian Dalai Seed science and Technology Co. Ltd.Ningde 352101China

Gamma-aminobutyric acid(GABA),widely existing in different organisms,is rapidly accumulated in plants in response to environmental *** main biosynthesis and degradation pathways of GABA constitute the GABA shunt,which is tied to the tricarboxylic acid(TCA)*** transaminase(GABA-T)and succinate semialdehyde dehydrogenase(SSADH)are two essential enzymes for the GABA degradation *** there are abundant studies on GABA shunt in higher plants at the physiological and genetic levels,research on its role in microalgae remains *** study aimed at exploring the function of GABA-T and SSADH genes in Isochrysis zhanjiangensis,an important diet microalga,under different *** cloned two GABA-T genes,IzGABA-T1 and IzGABA-T2,and one SSADH gene IzSSADH from Isochrysis zhanjiangensis and conducted heterologous expression *** results showed that the overexpression of IzGABA-T1 or IzGABA-T2 enhanced the survival rates of yeast transformants under heat or NaCl stress,while the overexpression of IzSSADH improved yeast tolerance to NaCl stress but had no obvious effect on heat ***,the results of quantitative real-time polymerase chain reaction(qPCR)showed that IzGABA-T1 transcription increased in the HT(salinity 25,35℃)and LS(salinity 15,25℃)*** 24 h,the IzGABA-T2 transcriptions increased in the HT,LS,and HS(salinity 35,25℃)groups,but their transcription levels decreased in all groups at 48 *** transcription increased in the LS *** results suggest that IzGABA-T1,IzGABA-T2,and IzSSADH are associated with temperature and salinity stresses and possess a certain preference for different stresses.

关键词： abiotic stress GABA heterologous expression Isochrysis zhanjiangensis transcription

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Epidermal microorganisms contributed to the toxic mechanism of nZVI and TCEP in earthworms by robbing metal elements and nutrients

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Eco-Environment & Health 2024年第1期3卷 80-88页

作者： Jie Hou Meirui Yang Xinyue Wu Qiqi chen Yuqi Lu Jianying Zhang Daohui Lin zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Department of Environmental ScienceZhejiang UniversityHangzhou 310058China zhejiang Ecological Civilization Academy Anji 313300China National Demonstration Center for Experimental Environment and Resources Education(zhejiang university) Hangzhou 310058China

Disrupting effects of pollutants on symbiotic microbiota have been regarded as an important mechanism of host toxicity,with most current research focusing on the intestinal *** fact,the epidermal microbiota,which participates in the nutrient exchange between hosts and environments,could play a crucial role in host toxicity via community *** compare the contributions of intestinal and epidermal symbiotic microorganisms to host toxicity,this study designed single and combined scenarios of soil contamination[nano zerovalent iron(nZVI)and tris(2-chloroethyl)phosphate(TCEP)],and revealed the coupling mechanisms between intestinal/epidermal symbiotic bacterial communities and earthworm toxicological *** analysis showed that 15%of intestinal microbes were highly correlated with host endpoints,compared to 45%of epidermal microbes showing a similar *** comparisons revealed that key species on the epidermis were mainly heterotrophic microbes with genetic abilities to utilize metal elements and carbohydrate *** verifications demonstrated that when facing the co-contamination of nZVI and TCEP,certain symbiotic microorganisms became dominant and consumed zinc,copper,and manganese along with saccharides and amino acids,which may be responsible for the nutritional deficiencies in the host *** findings can enrich the understanding of the coupling relationship between symbiotic microorganisms and host toxicity,highlighting the importance of epidermal microorganisms in host resistance to environmental pollution.

关键词： Microbial community Host Soil pollution Joint toxicity Heterotrophic function

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