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Air pollution and meteorological conditions significantly contribute to the worsening of allergic conjunctivitis:a regional 20-city,5-year study in Northeast China

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Light(Science & Applications) 2021年第11期10卷 2128-2142页

作者： Cheng-Wei Lu Jing Fu xiu-Fen liu Wei-Wei Chen Ji-Long Hao Xiao-Lan Li Om Prakash Pant The Department of Ophthalmology The First Hospital of Jilin UniversityChangchun130021China Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun130102China Institute of Atmospheric Environment China Meteorological AdministrationShenyang110166China Dhangadhi Netralaya Eye Hospital Dhangadhi3KailaliNepal

This study is the first to explore the potential associations among allergic conjunctivitis(AC),air pollution,and meteorological conditions in Northeast *** of meteorology,ambient atmospheric pollutants,and the incidence of allergic conjunctivitis(IAC)in prefecture-level cities between the years 2014 and 2018 are *** results show an increasing trend in the AC of average growth rate per annum 7.6%,with the highest incidence in the provincial *** IAC is positively correlated with atmospheric pollutants(i.e.,PM_(2.5),PM_(10),CO,SO_(2),NO_(2),and O_(3))and meteorological factors(i.e.,air temperature and wind speed),but negatively correlated with relative *** results suggest that the IAC is directly proportional to pollution level and climatic conditions,and also the precedence of air *** have further obtained the threshold values of atmospheric pollutants concentration and meteorological factors,a turning point above which more AC may be *** with the air quality standard advised by China and the World Health Organization(WHO),both thresholds of PM_(10)(70μg m^(-3))and PM_(2.5)(45μg m^(-3))are higher than current standards and pose a less environmental risk for the ***_(2) threshold(23μg m^(-3))is comparable to the WHO standard and significantly lower than that of China’s,indicating greater environmental risks in *** thresholds of NO_(2)(27μg m^(-3))and O_(3)(88μg m^(-3))are below current standards,indicating that they are major environmental risk factors for the *** findings highlight the importance of atmospheric environmental protection and reference for health-based amendment.

关键词： allergic meteorological pollution

Effects of Si/Al,Na/Al and H_(2)O/Na_(2)O molar ratios on formaldehyde barrier properties of inorganic aluminosilicate coatings

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International Journal of Minerals,Metallurgy and Materials 2021年第11期28卷 1868-1874页

作者： Shan-xia Xiong Jian-lei Kuang Qian-fang Zheng Ting Xiao Wen-xiu liu Qi Wang Peng Jiang Wen-bin Cao Department of Inorganic Nonmetallic Materials School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Wood-based panels containing urea-formaldehyde resin result in the long-term release of formaldehyde and threaten human *** this study,inorganic aluminosilicate coatings prepared by combining metakaolin,silica fume,NaOH,and H_(2)O were applied to the surfaces of wood-based panels to obstruct formaldehyde *** Si/Al,Na/Al,and H_(2)O/Na_(2)O molar ratios of the coatings were regulated to investigate their effects on the structure and formaldehyde-resistant barrier properties of *** showed that the cracks in the coatings gradually disappeared and the formaldehyde resistance rates of the barrier increased as the Si/Al molar ratio was increased from 1.6 to *** value also increased as the Na/Al molar ratio was increased from 0.9 to 1.2 because of the improvement of the degree of *** the H_(2)O/Na_(2)O molar ratio was increased from 12 to 15,the thickness of the dry film decreased gradually and led to the reduction in the formaldehyde resistance *** the Si/Al,Na/Al,and H_(2)O/Na_(2)O molar ratios were 2.2,1.2,and 12,respectively,the inorganic aluminosilicate coating showed good performance as a formaldehyde-resistant barrier and its formaldehyde resistance rate could reach up to 83.2%.

关键词： aluminosilicate coating chemical composition formaldehyde barrier properties

Effects of saline irrigation on soil salt accumulation and grain yield in the winter wheat-summer maize double cropping system in the low plain of North China

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Journal of Integrative Agriculture 2016年第12期15卷 2886-2898页

作者： liu xiu-wei Til Feike CHEN Su-ying SHAO Li-wei SUN Hong-yong ZHANG Xi-ying Key Laboratory of Agricultural Water Resources Center for Agricultural Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Shijiazhuang 050021 P. R China Texas A&M AgriLife Research and Extension Center Uvalde 78801 USA Julius Kühn-Institut (JKI)/Federal Research Centre for Cultivated Plants Institute for Strategies and Technology Assessment Kleinmachnow 14532 Germany

In the dominant winter wheat （WW）-summer maize （SM） double cropping system in the low plain located in the North China, limited access to fresh water, especially during dry season, constitutes a major obstacle to realize high crop productivity. Using the vast water resources of the saline upper aquifer for irrigation during WW jointing stage, may help to bridge the peak of dry season and relieve the tight water situation in the region. A field experiment was conducted during 2009-2012 to investigate the effects of saline irrigation during WW jointing stage on soil salt accumulation and productivity of WW and SM. The experiment treatments comprised no irrigation （T1）, fresh water irrigation （T2）, slightly saline water irrigation （T3：2.8 dS m-l）, and strongly saline water irrigation （T4：8.2 dS m-1） at WW jointing stage. With regard to WW yields and aggregated annual WW-SM yields, clear benefits of saline water irrigation （T3 ＆ T4） compared to no irrigation （T1）, as well as insignificant yield losses compared to fresh water irrigation （T2） occurred in all three experiment years. However, the increased soil salinity in eady SM season in consequence of saline irrigation exerted a negative effect on SM photosynthesis and final yield in two of three experiment years. To avoid the negative aftereffects of saline irrigation, sufficient fresh water irrigation during SM sowing phase （i.e., increase from 60 to 90 mm） is recommended to guarantee good growth conditions during the sensitive early growing period of SM. The risk of long-term accumulation of salts as a result of saline irrigation during the peak of dry season is considered low, due to deep leaching of salts during regularly occurring wet years, as demonstrated in the 2012 experiment year. Thus, applying saline water irrigation at jointing stage of WW and fresh water at sowing of SM is most promising to realize high yield and fresh irrigation water saving.

关键词： winter wheat summer maize soil salinity saline water irrigation salt balance

Effect of metal catalyst on the mechanism of hydrogen spillover in three-dimensional covalent-organic frameworks

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Chinese Physics B 2017年第2期26卷 412-419页

作者： xiu-Ying liu Jing-Xin Yu Xiao-Dong Li Gui-Cheng liu Xiao-Feng Li Joong-Kee Lee College of Science Henan University of Technology Zhengzhou 450000 China Center for Energy Convergence Research Green City Research Institute Korea Institute of Science and Technology (KIST) Seou102792 Republic of Korea College of Physical and Electronic Information Luoyang Normal University Luoyang 471022 China

Hydrogen spillover mechanism of metal-supported covalent-organic frameworks COF-105 is investigated by means of the density functional theory, and the effects of metal catalysts M_4（Pt_4, Pd_4, and Ni_4） on the whole spillover process are systematically analyzed. These three metal catalysts exhibit several similar phenomena：（i） they prefer to deposit on the tetra（_4-dihydroxyborylphenyl） silane（TBPS） cluster with surface-contacted configuration;（ii） only the H atoms at the bridge site can migrate to 2,3,6,7,10,11-hexahydroxy triphenylene（HHTP） and TBPS surfaces, and the migration process is an endothermic reaction and not stable;（iii） the introduction of M_4 catalyst can greatly reduce the diffusion energy barrier of H atoms, which makes it easier for the H atoms to diffuse on the substrate surface. Differently, all of the H2 molecules spontaneously dissociate into H atoms onto Pt_4 and Pd_4clusters. However, the adsorbed H2 molecules on Ni_4 cluster show two types of adsorption states： one activated state with stretched H–H bond length of 0.88 ？A via the Kubas interaction and five dissociated states with separated hydrogen atoms. Among all the M_4 catalysts, the orders of the binding energy of M_4 deposited on the substrate and average chemisorption energy per H2 molecule are Pt_4〉Ni_4〉Pd_4. On the contrary, the orders of the migration and diffusion barriers of H atoms are Pt_4

关键词： covalent-organic frameworks hydrogen spillover hydrogen storage density functional theory

Contamination of Aflatoxins in Different Kinds of Foods in China

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Biomedical and Environmental Sciences 2007年第6期20卷 483-487页

作者： JUN WANG xiu-MEI liu Institute of Nutrition and Food Safety Chinese Center for Disease Control and Prevention Beijing 100050 China

Objective To study the contamination of total aflatoxins （AFs） in different kinds of foods including corn, peanut, rice, walnut, and pine nut in six provinces and two municipalities in China. Methods A total of 283 samples of corn, peanut, rice, walnut and pine nut were randomly collected from local markets in Fujian, Guangdong, Guangxi, Hubei, Jiangsu, and Zhejiang provinces, as well as in Shanghai and Chongqing municipalities. The samples were ground to which acetonitrile/water solution was added. After filtering, the extract was transferred into a MycoSepTM purifying column and was pressed slowly. Then the purified liquid was derivatized with trifluoroacetic acid （TFA） and assayed using high performance liquid chromatography （HPLC）. Results AFs were detected in 70.27% of corn samples, with a mean level of 27.44 μg/kg and the highest level of 1098.36 μg/kg. In peanut, the AFs detection rate was 23.08%, with a mean level of 0.82 μg/kg and the highest level of 28.39 μg/kg. Very few rice samples with AFs were detected. The AFs levels were very low in walnut and pine nut. Conclusion Corn is the food most seriously contaminated with AFs in China. AFBI is the main aflatoxin which is found as a contaminant in foods.

关键词： Aflatoxins Contamination Foods

An efficient demodulation scheme for VLC signal image processing

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Optoelectronics Letters 2020年第3期16卷 211-215页

作者： liu xiu-jun FENG Li-fang CHEN Dan-yang University of Science and Technology Beijing Beijing 100083China

With the development of visible light communication(VLC)and widespread applications of smart terminals with complementary-metal-oxide-semiconductor(CMOS)image sensor,researchers pay more and more attention in VLC systems with CMOS-based *** blooming effect and light noise make the threshold decision in image processing difficult,which deteriorates the system performance a *** this paper,an efficient demodulation scheme is proposed to improve the performance of image *** the proposed demodulation scheme,a region of interest(ROI)based column matrix selection scheme is employed to avoid blooming effect,and an adaptive contrast enhancement(ACE)algorithm is designed to increase the contrast of bright and dark *** results show that the proposed scheme especially fits for high fluctuation data *** demodulation with a data rate of 5.76 kbit/s can successfully achieve 7%forward error correction(FEC)limit even when the illuminance is very low.

关键词： scheme image VLC

Determination of lisinopril using anion exchange chromatography with integrated pulsed amperometric detection

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Chinese Chemical Letters 2012年第3期23卷 335-338页

作者： Yu xiu liu Dan Shou Mei Lan Chen Zhi Dong Chen Pei Min Zhang Yan Zhu School of Chemistry and Chemical Engineering Changzhou UniversityChangzhou 213164China Zhe Jiang Academy of Traditional Chinese Medicine Hangzhou 310007China College of Biology and Environment Engineering Zhejiang Shuren UniversityHangzhou 310015China Department of Chemistry Xixi CampusZhejiang UniversityHangzhou 310028China

A rapid and practical method for direct detection of lisinopril in anion exchange chromatography（AEC） has been developed with integrated pulsed amperometric detection（IPAD）.Dionex AS 18（250 mm×2 mm） and AG 18（50 mm×2 mm） columns and 40 mmol/L NaOH solution were used for ***-step potential waveform parameters were optimized to maximize the signal-to-noise ratio（S/N）.Utilizing the optimized waveform,the repeatability（intra-day） precision and intermediate（inter-day） precision were obtained with relative standard deviation（RSD） of 0.74,0.93,*** limit of quantification（LOQ） and limit of detection（LOD） were found to be 0.37,0.12ng/mL,respectively,with the correlation coefficient of 0.9998 over concentration range 0.01-1μg/*** present method was successfully applied to the determination of lisinopril in human *** recoveries of plasma sample spiked by 0.2μg/mL,0.8μg/mL lisinopril were 98.31-103.23%with RSD of 1.41%, 0.61%,respectively.

关键词： Lisinopril Integrated pulsed amperometry Anion exchange chromatography Angiotensin converting enzyme inhibitor Plasma

Effect of SDBS on interfacial electron transfer at the liquid/liquid interface by thin layer method

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Chinese Chemical Letters 2009年第9期20卷 1115-1118页

作者： xiu Hui liu Cun Wu Dong Kai Zhang Fu Peng Zhi Zhen Ding Xiao Quan Lu College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China

The effect of an adsorbed anionic surfactant sodium dodecyl benzene sulfonate （SDBS） on electron transfer （ET） reaction between ferricyanide aqueous solution and decamethylferrocene （DMFc） located on the adjacent organic phase was investigated for the first time by thin layer method. The adsorption of SDBS at the interface resulted in a decay in the cathodic plateau current of bimolecular reaction with increasing concentrations of SDBS in aqueous phase. However, the rate constant of electron transfer （ket） increased monotonically as the SDBS concentrations increased from 0 to 200 p, moFL. The experimental results showed that SDBS formed patches on the interface and influenced the structure of electrical double layer. 2009 Xiao Quan Lu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Anionic surfactant Liquid/liquid interface Electron transfer Thin layer method

Disturbance of cholinergic Grb2-associated-binding protein 1 signaling participate in the pathological process of cognitive dysfunction

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中国药理学与毒理学杂志 2017年第5期31卷 475-476页

作者： TAN Chao LU Nan-nan SHAO Ling-xiao liu xiu-xiu PAN Yue liu Yi-jie YU Fang-ying LU Ying-mei 韩峰 College of Pharmaceutical Sciences Zhejiang University School of Medicine Zhejiang University City College 中国毒理学会浙江省毒理学会

OBJECTIVE A causal relationshiphas been postulated between cholinergic dysfunction and the progression of cognitive decline in neurodegenerative disorders. However,the cause of the cognitive dysfunction remains unclear. METHODS Gab1^(loxP/loxP) were bred with ChAT-Cre mice to generate ChAT-Cre; Gab1^(f/f) mice. Excitability of cholinergic neurons wererecorded using whole-cel patch clump. A series of behavioral analyses were used to address the changes of cognitive function in ChAT-Cre; Gab1^(f/f) mice. Neurochemical changes on brain of conditional knockout mice were evaluated by using immunohistochemistry and Western blotting analysis. RESULTS Grb2-associated-binding protein 1(Gab1) is adocking/scaffolding molecule known to play an important role in cell growth and survival. Here,wereport that Gab1 is decreased in cholinergic neurons in a mousemodel of AD. We found that selective downregulation of Gab1 in the septum impaired learning and memory and hippocampal long-term potentiation,whereas overexpression of Gab1 in the same area rescued the cognitive deficitsseen in ChAT-Cre; Gab1^(f/f) and APP^(swe)/PS1 mice.^(18)F-FDGmicroP ET imaging data indicated that Gab1 treatment had no effect on metabolic activity of glucose in APPswe/PS1 mice. Moreover,we identify abnormal function of SKchannelscontributes to increased firing in cholinergic neuronsof ChAT-Cre; Gab1^(f/f) mice. CONCLUSION Gab1 signaling may serve as a potential treatment target for neurological disorders involving dysfunction of central cholinergic neurons.

关键词： cholinergic neurons cognitive dysfunction Gab1 therapeutic target