检索结果-南通市图书馆

Journal of Environmental Sciences 2008年第7期20卷 769-777页

作者： lei bingli HUANG Shengbiao QIAO Min State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

An accidental discharge of nitrobenzene happened in November 2005 in the Songhua River,*** AQUATOX model was modified and adapted to simulate the time-dependent nitrobenzene distribution in this multimedia aquatic system and its potential ecological *** concentrations in flowing water,sediment,and biota were *** on the initial concentrations of nitrobenzene observed in the field during the accidental discharge,that is,0.167-1.47 mg/L at different river segments, the predic...

关键词： nitrobenzene environmental fate ecological impact the Songhua River AQUATOX model

Determination of estrogens and estrogenic activities in water from three rivers in Tianjin, China

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2013年第6期25卷 1164-1171页

作者： Kaifeng Rao bingli lei Na Li Mei Ma Zijian Wang Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Institute of Environmental Pollution and Health College of Environmental and Chemical EngineeringShanghai University Key Laboratary for Biomedical Effects of Nanomaterials and Nanosafety Key Laboratory of Nuclear Analytical TechniquesInstitute of High Energy PhysicsChinese Academy of Sciences

Studies on estrogenic disrupting compounds （EDCs） occurrence and identification of main responsible compounds in river water discharged into the sea are of significance. In the present research, we screened estrogenic activities of 10 river water samples from 3 main rivers discharged into Bohai Sea in Tianjin using a recombinant two-hybrid yeast assay and chemical analysis by gas chromatography-mass spectrometry. All sample extracts induced significant estrogenic activity, with 17^-estradiol equivalents （EEQ） of raw water ranging from 5.72 to 59.06 ng/L. Six most concerned EDCs in the fiver water samples including estrone, 17（5-estradiol, 17ct-ethinylestradiol, estriol, diethylstilbestrol and estradiol valerate were determined, with their concentrations up to 50.70, 31.40, 24.40, 37.20, 2.56, and 8.47 ng/L, respectively. Through causality analysis by comparing the EEQ values of yeast assay and chemical analysis, 17ct-ethinylestradiol and 17[3-estradiol were identified as the main contributors to the estrogenic effects of the river samples, accounting for the whole estrogenic activities （62.99% to 185.66%）, and estrogen antagonistic compounds might presented in the heavy polluted water samples. The proposed approach using both chemical analysis and bioassay could be used for identification and evaluation of the estrogenic activity of EDCs in river water.

关键词： river water endocrine disrupting compounds (EDCs) yeast assay bioassay

Water quality criteria for 4-nonylphenol in protection of aquatic life

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2012年第6期55卷 892-899页

作者： lei bingli LIU Qian SUN YanFeng WANG YiPei YU ZhiQiang ZENG XiangYing FU JiaMo SHENG GuoYing lnstitute of Environmental Pollution and Health College of Environmental and Chemical Engineering Shanghai University Shanghai 200444 China State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

Here reproduction and death toxicity data were selected for 4-nonylphenol based on endocrine disrupting properties of the re- productive system. Assessment factor （AF） and species sensitivity distribution （SSD） curve were employed to derive criteria maximum concentration （CMC） and criteria continuous concentration （CCC） of three different 4-nonylphenols for protection of aquatic life. The results showed that the CMC and CCC based on SSD method and death toxicity data for three different 4-nonylphenols （CAS No： 104405, 25154523, 84852163） were 26.7, 13.6, 3.84μg L-1 and 8.86, 2.21, 0.97 μg L-1, respectively. Based on SSD and reproductive toxicity data, the CCC values of different 4-nonylphenols （CAS No： 104405, 25154523） were 1.59 and 1.34μg L-l, respectively. The CCC values obtained by the AF for three different 4-nonylphenol （CAS No： 104405, 25154523, 84852163） were 0.165, 1.03, 0.74 μg L -1 and 0.5, 0.5, 0.1μg L-1, respectively, based on death toxicity data and re- productive toxicity data. The CCC values obtained by AF were all lower than the corresponding criteria values obtained by SSD, and the CCC values based on reproductive toxicity data were less than those based on the death toxicity data. This study provides a useful method for deriving water quality criteria for endocrine disruptors.

关键词： 4-nonylphenol toxicity endpoint assessment method aquatic quality criteria

在线全文

学校读者我要写书评

暂无评论

助溶剂对发光菌生物毒性测试的影响

化工学报 2006年第3期57卷 636-639页

作者：董玉瑛雷炳莉马静王芳大连民族学院环境工程系国家民委生物化学工程重点实验室辽宁大连116600 河南师范大学化学与环境科学学院河南省环境污染控制重点实验室河南新乡453002

There is little information about the influence of organic solvents for low water-solubility organic compounds on Photobacterium phosphoreum toxicity test,though it appears likely that much of data were obtained by using solutions prepared with cosolvents or *** this study the influence of five stock solvents,including dimethyl sulphoxide（DMSO）,acetone,aether,ethanol,tetrahydrofuran,on Photobacterium phosphoreum toxicity test was measured and different effective concentration values were *** was selected as the most suitable solvent for organic compounds with low water-solubility according to its good characteristics and less toxicity effect on Photobacterium *** and nitrobenzene with proper solubility were selected to verify the effect of DMSO on Photobacterium phosphoreum *** was demonstrated that DMSO(concentration no higher than 0.20 mol·L-1) had little effect on the toxicity of organic chemicals with relative error no more than 10%.The successful application of DMSO as cosolvent provided a good example and a good idea to improve traditional acute toxicity test of Photobacterium phosphoreum,and broadened the application to identifying the toxicity of low water-solubility organic compounds.

关键词：发光菌助溶剂二甲亚砜毒性影响

等浓度配比法研究苯酚、硝基苯和间硝基苯胺对发光菌的联合毒性作用

在线全文

学校读者我要写书评

暂无评论

环境污染治理技术与设备 2005年第12期6卷 65-68页

作者：董玉瑛冯霄雷炳莉大连民族学院环境工程系大连116600 河南师范大学化学与环境科学学院新乡453002

分别测定了苯酚、硝基苯和间硝基苯胺对发光菌的单一毒性,以及等浓度配比和等毒性配比的二元及三元混合体系的联合毒性,采用相加指数法对其联合效应进行了评价。结果表明,等浓度比和等毒性比混合体系的联合作用结果一致:苯酚+间硝基苯... 详细信息

分别测定了苯酚、硝基苯和间硝基苯胺对发光菌的单一毒性,以及等浓度配比和等毒性配比的二元及三元混合体系的联合毒性,采用相加指数法对其联合效应进行了评价。结果表明,等浓度比和等毒性比混合体系的联合作用结果一致:苯酚+间硝基苯胺二元体系为协同作用,其他各体系为相加作用。为简化联合毒性实验方法,建议在研究相关系列化合物的联合毒性作用机制中,可采用等浓度配比方法。

关键词：发光菌苯酚硝基苯硝基苯胺联合毒性

在线全文

学校读者我要写书评

暂无评论

多介质逸度模型的应用与展望

化工环保 2005年第3期25卷 199-203页

作者：董玉瑛雷炳莉大连民族学院环境工程系辽宁大连116600 河南师范大学化学与环境科学学院河南省高等学校环境科学与工程重点实验室河南新乡453002

介绍了源于逸度算法的多介质逸度模型。该模型具有结构简单、所需参数少、容易计算、结果表示直观、其计算方法可推广到任意数目的环境介质、预测结果对环境监测和管理具有指导意义等优点。综述了逸度模型的理论基础及近10年的发展与应... 详细信息

介绍了源于逸度算法的多介质逸度模型。该模型具有结构简单、所需参数少、容易计算、结果表示直观、其计算方法可推广到任意数目的环境介质、预测结果对环境监测和管理具有指导意义等优点。综述了逸度模型的理论基础及近10年的发展与应用情况,并展望了多介质逸度模型的应用前景和发展趋势。

关键词：逸度模型多介质模型风险评价

基于本土物种的3种典型化合物急性生态效应阈值研究

在线全文

学校读者我要写书评

暂无评论

生态毒理学报 2015年第1期10卷 139-150页

作者：雷炳莉许洁孙延枫于志强王艺陪曾祥英上海大学环境与化学工程学院环境污染与健康研究所上海200444 中国科学院广州地球化学研究所有机地球化学国家重点实验室广州510640

预测无效应浓度(PNEC)是进行风险污染物水生态安全管理的重要依据。本研究进行了3种典型化合物五氯酚、硝基苯和氯化镉对10种我国不同营养级水生生物的24 h、48 h和96 h的急性毒性测试,根据实验结果计算了相应的急性PNEC,同时与根据美... 详细信息

预测无效应浓度(PNEC)是进行风险污染物水生态安全管理的重要依据。本研究进行了3种典型化合物五氯酚、硝基苯和氯化镉对10种我国不同营养级水生生物的24 h、48 h和96 h的急性毒性测试,根据实验结果计算了相应的急性PNEC,同时与根据美国环境保护局毒性数据库里的毒性数据计算获得的急性PNEC值,以及综合本实验结果与毒性数据库里的数据计算得到的急性PNEC值进行对比,发现通过3种数据来源获得的急性PNEC值中,硝基苯的PNEC值差异较大,由本次实验结果获得的急性PNEC值最小;其他2种化合物差异较小。这可能是由于本次实验所选的本土生物中华田螺和麦穗鱼对硝基苯比较敏感,并且数据库中硝基苯的急性致死数据较少、毒性值较大且变化范围较窄,而其他2种化合物数据量较为丰富,变化范围较宽,包括了较敏感物种的毒性数据。这表明为给我国水生生物提供一个安全可靠的保护,对于数据量较为丰富并且毒性值变化较宽的化合物(如五氯酚和氯化镉)可以直接根据数据库里的毒性数据进行PNEC值的计算;而对于毒性数据量较少、毒性值偏大且变化较窄的化合物(如硝基苯)需要进行本土敏感物种的毒性测试。

关键词：硝基苯五氯酚氯化镉本土物种急性毒性急性生态效应阈值

典型抗抑郁药对人乳腺癌SKBR3/MCF-7细胞的生物学效应

在线全文

学校读者我要写书评

暂无评论

上海大学学报（自然科学版） 2023年第2期29卷 264-276页

作者：赵浩然彭玮雷炳莉许澜冰于蒙杰上海大学环境与化学工程学院环境污染与健康研究所上海200444

新型选择性5-羟色胺再摄取抑制剂类药物氟西汀、三环类药物阿米替林和多虑平以及选择性去甲肾上腺素再摄取抑制药物米安色林等是目前常用的抗抑郁药,但目前对这类药物的非靶点毒性研究较少.选取雌激素敏感型人乳腺癌细胞SKBR3和MCF-7为... 详细信息

新型选择性5-羟色胺再摄取抑制剂类药物氟西汀、三环类药物阿米替林和多虑平以及选择性去甲肾上腺素再摄取抑制药物米安色林等是目前常用的抗抑郁药,但目前对这类药物的非靶点毒性研究较少.选取雌激素敏感型人乳腺癌细胞SKBR3和MCF-7为研究对象,检测了以上4种抗抑郁药对细胞的增殖能力、氧化应激能力、胞内Ca^(2+)浓度变化及DNA损伤等生物学效应终点的影响,并评估其综合毒性效应.对SKBR3细胞的研究结果表明,在低浓度(0.001~10μmol/L)暴露24 h后,仅氟西汀明显促进了SKBR3细胞增殖,但当浓度高于10μmol/L时,氟西汀、阿米替林和米安色林均对细胞活性产生了抑制作用.低浓度下,氟西汀和阿米替林暴露24 h后,可诱导细胞内活性氧(reactive oxygen species,ROS)水平显著升高;而米安色林和多虑平在暴露3 h时,即可提高细胞内ROS水平.4种抗抑郁药在低浓度(0.001~1μmol/L)暴露24 h时对细胞内Ca^(2+)水平均没有显著影响,但当浓度大于1μmol/L时,细胞内Ca^(2+)水平显著升高.彗星实验表明,氟西汀在0.1和1μmol/L时促进了细胞内DNA损伤.作为对比研究,采用MCF-7细胞进一步评估了氟西汀和阿米替林对细胞增殖能力、氧化应激能力、胞内Ca^(2+)浓度变化等生物学效应终点的影响.发现类似于SKBR3细胞,低浓度下仅氟西汀对MCF-7细胞的增殖产生了促进作用.在较高的浓度下氟西汀和阿米替林均诱导了细胞内Ca^(2+)水平显著升高.而氟西汀和阿米替林仅在两个最高的暴露浓度25和50μmol/L导致了细胞内ROS水平的显著升高,这与它们在低浓度下即可诱导SKBR3细胞内ROS水平的升高的结果是不同的.这些研究结果能为评估抗抑郁药化合物的非靶点毒性效应危害提供实验数据.

关键词：抗抑郁药乳腺癌细胞细胞增殖活性氧簇脱氧核糖核酸损伤

A Networking Solution on Uplink Channel of CoFrequency and Co-Time System

在线全文

学校读者我要写书评

暂无评论

China Communications 2016年第S2期13卷 183-188页

作者： bingli Jiao Sanjun Liu Yiming lei Meng Ma School of Electronics Engineering & Computer Science Peking University

Co-frequency and co-time full duplex(CCFD) is an attractive technology for the future wireless communication because of its high spectral ***,applications of CCFD to mobile network can suffer from strong base station to base station(B2B)*** this paper,the authors proposed a design that uses centralized base station(BS)transmit antenna and distributed BS receive antennas,each of which consists of an antennary to perform beamforming that can nullify the B2 B *** addition,we proposed a combination algorithm that uses the zero forcing method to cascade the recursive least square(RLS) method for reducing the necessary number of the bits taken to the digital *** enables the faster convergence and,thus,allows the transmission of more information bits,compared to the conventional method,for mobile *** simulation results confirm this approach for practical application.

关键词： co-frequency and co-time full duplex cellular networks beamform RLS

Fabrication of high-stability Ni-PSF@PAO40 microcapsules and their lubricating properties in polyamide 6

在线全文

学校读者我要写书评

暂无评论

Friction 2022年第12期10卷 1985-1999页

作者： Wenli ZHANG Xiaowen QI Xiao YANG Yu DONG bingli FAN lei LIANG School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China Key Laboratory of Self-Lubricating Spherical Plain Bearing technology of Hebei Province Yanshan UniversityQinhuangdao 066004China Aviation Key Laboratory of Science and Technology on Generic Technology of Self-Lubricating Spherical Plain Bearing Yanshan UniversityQinhuangdao 066004China School of Civil and Mechanical Engineering Curtin UniversityPerthWA 6845Australia Shanghai Research Institute of Synthetic Resins Co. Ltd.Shanghai 201702China

Novel Ni-PSF@PAO40 microcapsules(NPPMS)with high stability were prepared by using a combined processing method of electroless nickel plating and solvent *** results indicate that Ni is completely assembled on the surfaces of PSF/PAO40 microcapsules with the encapsulation capacity of NPPMS achieved at 50%.Organic solvents immersion shows that NPPMS have an excellent chemical *** thermal stability tests reveal that the softening temperature of NPPMS is increased up to over 400℃ while it becomes lower than 200℃ for PSF/PAO40 ***,NPPMS were embedded into polyamide 6(PA6)to prepare PA6/NPPMS *** cross-sectional morphology shows that NPPMS are intact in PA6 *** microhardness of PA6 is effectively improved with the incorporation of *** compared with neat PA6,the coefficient of friction(COF)for PA6/NPPMS composites with 10%NPPMS could be reduced by 87.7%(from 0.49 to 0.06)and the wear rate could be decreased by 96.8%(from 1.29×10^(-5) to 4.15×10^(-7) mm^(3)/(N·m)).Further studies confirmed that increasing test loads and test temperatures was beneficial to improve the lubrication performance of NPPMS despite the opposite trend occurred when increasing the sliding *** has been demonstrated that synergistic effects between PAO40 and Ni layer play an important role in improving the tribological properties of ***,NPPMS significantly improve the ability of microcapsules to resist a harsh environment,which has important scientific significance for expanding the use of microcapsules more practically in self-lubricating composites.

关键词： microcapsules electroless nickel high temperature resistant polyamide 6(PA6) friction and wear