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    题名 作者 年代 出处 被引量
1In-situ Synthesis of ZSM-5 with Different Si/AlRatios on Honeycomb-shaped Cordierite and their Behavior on NO Decomposition显示文摘Zeolites ZSM-5 with different Si/Al ratios were in-situ synthesized on the surface ofhoneycomb-shaped cordierite support for the first time. Characterizations of XRD and SEM wereperformed and it has been proved that the zeolite ZSM-5 was grown on the surface of the cordieritehomogeneously. NO decomposition on the Cu exchanged ZSM-5/cordierite monolith catalysts wasalso studied. It was found that the monolith catalysts have a fine initial activity at 673K and GHSVof 10,000h-1. Such method should be a good way to make auto exhaust converter with monolithcatalyst for NOx removal.Xue Lei SHAN Nai Jia GUAN Xiang ZENG Shou He XIANG(ICM, Department of Chemistry, Nankai University, Tianjin 300071) 1999Chinese Chemical Letters1999,10,10:5
2Comparison of developmental toxicity of different surface modified CdSe/ZnS QDs in zebrafish embryos显示文摘Quantum dots(QDs)are new types of nanomaterials.Few studies have focused on the effect of different surface modified QDs on embryonic development.Herein,we compared the in vivo toxicity of Cd Se/Zn S QDs with carboxyl(-COOH)and amino(-NH 2)modification using zebrafish embryos.After exposure,the two Cd Se/Zn S QDs decreased the survival rate,hatching rate,and embryo movement of zebrafish.Moreover,we found QDs attached to the embryo membrane before hatching and the eyes,yolk and heart after hatching.The attached amount of carboxyl QDs was more.Consistently,the Cd content in embryos and larvae was higher in carboxyl QD-treatment.We further observed that the two QDs caused zebrafish pericardial edema and cardiac dysfunction.In line with it,both carboxyl and amino QDs upregulated the transcription levels of cardiac development-related genes,and the levels were higher in carboxyl QD-treated groups.Furthermore,the chelator of Cd^2+diethylene triamine pentacetate acid could partially rescued the developmental toxicity caused by the two types of QDs suggesting that both the nature of QDs and the release of Cd^2+contribute to the developmental toxicity.In conclusion,the two Cd Se/ZnS QDs have developmental toxicity and affect the cardiac development,and the carboxyl QDs is more toxic possibly due to the higher affinity and more release to embryos and larvae.Our study provides new knowledge that the surface functional modification of QDs is critical on the development on aquatic species,which is beneficial to develop and applicate QDs more safely and environmentfriendly.Naying Zheng Jinhui Yan Wang Qian Chao Song Zhenghong Zuo Chengyong He 2021Journal of Environmental Sciences2021,33,2:3
3Semi-solid characteristics and thixoforming of hypereutectic Al-Si alloy显示文摘Effects of processing parameters on microstructure evolutions by mechanical stirring, procedures for obtaining thixotropy in semi solid slurries, and procedure for thixoforging component, were investigated in hypereutectic Al Si alloy. It is shown that 605 ℃ was the proper temperature for stirring treatment of this alloy, at which the coarse and plate primary Si crystals were effectively changed to globular crystals with a mean diameter of 200 μm after 50 min stirring, that billets with excellent thixotropy were obtained after 50 min remelting at 575 ℃, in which solid fraction of matrix and primary Si crystals was about 60%, and that a perfect near net shape component of disc casting was obtained by thixoforging.LIU Chang ming(刘昌明) HE Nai jun(何乃军) LI Hua ji(李华基) 2000中国有色金属学会会刊:英文版2000,10,3:2
4Fuzzy Probabilistic Analysis of Seismic Stability of Coastal Embankment显示文摘The stability of slope is affected by a number of factors, some of which have not only random property but also fuzzy characteristic. Therefore, the analysis of slope stability is really an uncertain problem. The customary safety factor does not in reality reflect stability scientifically, quantitatively and practically. In order to obtain more practical results, the slope stability is treated as a fuzzy random event for the evaluation of its fuzzy probability. Finally, the seismic stability of an existing coastal embankment is analyzed by means of the suggested fuzzy probabilistic method. It may be seen that the results of analysis can more fully represent the numerical assessment of the degree of slope seismic stability.He Guangne Yang Bin Wen Nai Professor, Dalian University of Technology, Dalian 116023 Engineer, Design and Research Institute of Shanghai Harbour Engineering, Shanghai 200032 . Lecturer, Dalian Fisheries College, Dalian 116023 1996China Ocean Engineering1996,11,1:1
5Mepanipyrim induces cardiotoxicity of zebrafish(Danio rerio) larvae via promoting AhR-regulated COX expression pathway显示文摘The wide use of pesticides has seriously threatened human health and the survival of beneficial organisms. The fungicide mepanipyrim is widely used in viticulture practices. Studies of mepanipyrim-induced toxicity in organisms are still scarce, especially studies on cardiotoxicity. In this study, we aimed to investigate mepanipyrim-induced cardiotoxicity in zebrafish(Danio rerio) larvae. We found that mepanipyrim could induce cardiotoxicity by altering the heart rate and cardiomyocyte diameter of larvae. Meanwhile, RNA sequencing and RT-qPCR data indicated that mepanipyrim exposure could dramatically alter the m RNA expression of calcium signaling pathway-, cardiac muscle contraction-, and oxidative respiratory chain-related genes. Interestingly, by the CALUX cell bioassay, we found that most cytochrome c oxidase(COX) family genes exhibited potential AhR-regulated activity, suggesting that mepanipyrim induced cardiotoxicity via a novel AhR-regulated manner in larvae.Additionally, the AhR antagonist CH_(2)23191 could effectively prevent mepanipyrim-induced cardiotoxicity in zebrafish larvae. In conclusion, the AhR agonist mepanipyrim could induce cardiotoxicity in a novel unreported AhR-regulated manner, which could specifically affect the expression of COX family genes involved in the mitochondrial oxidative respiratory chain. Our data will help explain the toxic effects of mepanipyrim on organisms and provide new insight into the AhR agonistic activity pesticide-induced cardiotoxicity.Chao Shen Jing He Kongyang Zhu Naying Zheng Yue Yu Chengyong He Chunyan Yang Zhenghong Zuo 2023Journal of Environmental Sciences2023,,3:0
6Evidence for a mouse brain-specific variant of α-tubulin显示文摘INTRODUCTIONTOinvestigatenestinintermediatefilamentproteinll]expressionduringmousebraindevelopment,weraisedanantibodytoasynthetic20-aminoacidpeptidecorrespondingtothecarboxy-terminusofratnestill.Westernblotsofembryonic*Correspondingauthor.Tel:86-21-...KONG LING WEI XIAO YAN DING HIROSHIKITANI ROBERT SHIURBA NAI HE JING( Shanghai Institute of Biochemistry, Chinese Academyof Sciences, 320 Yue Yang Road, Shanghai 200031,China)( Shanghai Institute of Cell Biology, Chinese Academyof Sciences, 320 Yue Ya 1999Cell Research1999,9,4:0
7Protocol for Brain Magnetic Resonance Imaging and Extraction of Imaging‑Derived Phenotypes from the China Phenobank Project显示文摘Imaging-derived phenotypes(IDPs)have been increasingly used in population-based cohort studies in recent years.As widely reported,magnetic resonance imaging(MRI)is an important imaging modality for assessing the anatomical structure and function of the brain with high resolution and excellent soft-tissue contrast.The purpose of this article was to describe the imaging protocol of the brain MRI in the China Phenobank Project(CHPP).Each participant underwent a 30-min brain MRI scan as part of a 2-h whole-body imaging protocol in CHPP.The brain imaging sequences included T1-magnetization that prepared rapid gradient echo,T2 fuid-attenuated inversion-recovery,magnetic resonance angiography,difusion MRI,and resting-state functional MRI.The detailed descriptions of image acquisition,interpretation,and post-processing were provided in this article.The measured IDPs included volumes of brain subregions,cerebral vessel geometrical parameters,microstructural tracts,and function connectivity metrics.Chengyan Wang Zhang Shi Yan Li Xueqin Xia Xutong Kuang Shufang Qian Le Xue Lizhen Lan Yudan Wu Na Zhang Ji Tao Xumei Hu Wenzhao Cao Naying He Yike Guo Weibo Chen Jun Zhang Jingchun Luo He Wang Mei Tian 2023Phenomics2023,3,6:0
8Direct Electrochemistry of Hemoglobin in Layer-by-layer {PDDA/Hb}_n Films Assembled on Pyrolytic Graphite Electrodes显示文摘Layer-by-layer {PDDA/Hb}n films were assembled by means of alternate adsorption of positively charged poly(diallyldimethyl ammonium) (PDDA) and negatively charged hemoglobin (Hb) at pH 9.2 from their aqueous solutions on pyrolytic graphite (PG) electrodes. Film growth during adsorption cycles was demonstrated by cyclic voltammetry and UV-Vis spectroscopy. Direct electrochemistry of Hb in {PDDA/Hb}n films on PG was studied.Ping Li HE, Nai Fei HU* Department of Chemistry, Beijing Normal University, Beijing, 100875 2001Chinese Chemical Letters2001,12,7:0
9Tributyltin causes generational neurodevelopmental toxicity and the protective effect of folic acid in zebrafish显示文摘Tributyltin(TBT),a common organotin environmental pollutant,may pose a threat to human development during critical early-life periods.We aimed to assess the neurodevelopmental intergenerational toxicity of early-life exposure to TBT and the protective effect of DNA methyl donor folic acid(FA).Specifically,after early-life exposure(1–21 days postfertilization,dpf)to TBT(0,1,10 and 100 ng/L),zebrafish(Danio rerio)were cultured in clean medium until sexual maturity.The exposed females were mated with unexposed males to produce embryos(F1).The F1 generation were cultured(4–120 hours post-fertilization,hpf)with and without 1 mmol/L FA.The neurotoxic effects of early-life TBT exposure for zebrafish and their offspring(F1)were significantly enhanced anxiety and reduced aggression,decreased gene expression of DNA methyltransferase in the brain and increased serotonin levels in the body.Moreover,the intergenerational neurodevelopmental toxicity,as manifested in the F1 generation,was attenuated by FA supplementation.In summary,early-life TBT exposure led to intergenerational neurodevelopmental deficits in zebrafish,and DNA methyl donors had a protective effect on F1 neurodevelopment,which can inform the prevention and treatment of intergenerational neurotoxicity due to organotin pollutants.Haoxing Cai Naying Zheng Chen Tang Yuxuan Zhang Zhenghong Zuo Chengyong He 2024Journal of Environmental Sciences2024,,3:0
10Synthesis of ZSM-5 Zeolite with Small Crystallite and its Application in Aromatiration of Propane显示文摘By optimizing the orystallization condition, a procedure for the synthesis of small crystallite zeolite ZSM-5 was developed. Compared with the larger crystallite ZSM-5. the smaller one exhibits higher catalytic performance in aromatization reaction of propane.Ming LIU Nai Jia GUAN Shou He XIANG Jian Xiang ZHANG Shang Yuan LIU Shu Quan LIU (Department of Chemistry. Nankai University. Tianjin 300071 Catalyst Plant of Nankai University.Tianjin 300071) 1999Chinese Chemical Letters1999,10,6:0
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