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事故状态下污染物排放对水环境影响的预测研究

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油气田环境保护 2010年第4期20卷 6-10页

作者：潘红磊张强斌曾勇中国石油集团安全环保技术研究院中国石油大学(北京)

对辽河油田欢喜岭采油厂在事故状态下污染物排放对大凌河水域环境的影响进行预测研究。计算了洪水淹没、油罐冒顶泄漏、油井井喷泄漏、联合站泄漏、管道泄漏、暴雨径流带走落地油等16种情景下对该河流水质的影响情况,并建立数学模型,进... 详细信息

对辽河油田欢喜岭采油厂在事故状态下污染物排放对大凌河水域环境的影响进行预测研究。计算了洪水淹没、油罐冒顶泄漏、油井井喷泄漏、联合站泄漏、管道泄漏、暴雨径流带走落地油等16种情景下对该河流水质的影响情况,并建立数学模型,进行情景模拟。研究结果表明,事故状态下对大凌河水质影响的次序由大到小依次为:洪水淹没、油罐冒顶泄漏、油井井喷泄漏、联合站泄漏、管道泄漏、暴雨径流。

关键词：欢喜岭油田事故大凌河污染预测模型

基于物种敏感性分布(SSDs)的土壤硒生态基准值推导

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环境科学学报 2023年第3期43卷 459-465页

作者：王靖菡许秋云王婷张强斌史雅娟钱力周譞柯玲杰中国石油大学(北京)化学工程与环境学院北京102249 中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085 中国科学院大学北京100049 中国石油大学(北京)油气污染防治北京市重点实验室北京102249

土壤中过量的硒会对土壤生物造成毒害效应,然而目前我国还未制定用于土壤生态系统健康保护的生态标准.本研究通过搜集土壤硒的毒理数据,并根据不同的效应终点对其进行筛选,分别推导对5%物种危害的浓度(Hazardous Concentration for 5%of... 详细信息

土壤中过量的硒会对土壤生物造成毒害效应,然而目前我国还未制定用于土壤生态系统健康保护的生态标准.本研究通过搜集土壤硒的毒理数据,并根据不同的效应终点对其进行筛选,分别推导对5%物种危害的浓度(Hazardous Concentration for 5%of species,HC_(5)).以20%效应浓度(20%Effect Concentration,EC_(20))、25%效应浓度(25%Effect Concentration,EC_(25))和最低观察效应浓度/水平(Lowest Observed Effect Concentration/Level,LOEC/LOEL)等为效应终点的毒理数据进行一级HC_(5)值的推导,以半数效应浓度(Half Effect Concentration,EC_(50))和半数致死效应浓度(Half Lethal Concentration,LC_(50))等为效应终点的毒理数据进行二级HC_(5)值的推导.物种敏感性分布(Species Sensitivity Distribution,SSDs)曲线由5种函数(Burr Ⅲ、Log-Logistic、Log-Normal、Weibull和Re-Weibull)对分级后的毒理数据分别拟合,并根据偏差信息准则值(Deviance Information Criterion,DIC)确定Burr Ⅲ函数具有最优拟合度.推导出的一级和二级HC_(5)值分别为0.079 mg·kg^(-1)和1.26 mg·kg^(-1).将安全系数和自然背景值考虑在内,得出土壤硒的一级和二级生态基准值分别为0.146 mg·kg^(-1)和0.385 mg·kg^(-1).本研究结果可为我国土壤硒的生态标准制定及其风险评估提供科学依据和支撑.

关键词：土壤硒物种敏感性分布生态基准值

复合材料蜂窝夹芯结构低速冲击后压缩强度的可靠性与灵敏度分析

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复合材料科学与工程 2024年第2期 5-12页

作者：李洪年石强斌王轩邹润文张峰中国商用飞机有限责任公司上海飞机设计研究院上海201210 中国民航大学航空工程学院天津300300 西北工业大学力学与土木建筑学院西安710072

建立了一种复合材料蜂窝夹芯结构低速冲击后压缩强度的可靠性与灵敏度分析方法。利用ABAQUS有限元分析软件和VUMAT子程序建立了蜂窝夹芯结构冲击后压缩渐进损伤失效分析模型,并通过试验验证模型的有效性;在此基础上,利用Python语言对模... 详细信息

建立了一种复合材料蜂窝夹芯结构低速冲击后压缩强度的可靠性与灵敏度分析方法。利用ABAQUS有限元分析软件和VUMAT子程序建立了蜂窝夹芯结构冲击后压缩渐进损伤失效分析模型,并通过试验验证模型的有效性;在此基础上,利用Python语言对模型中材料力学性能和面板厚度、蜂窝芯子厚度进行参数化;采用径向基神经网络代理模型替代渐进损伤失效分析模型;基于蒙特卡洛法进行冲击后压缩强度的可靠性分析;分别采用基于方差和基于失效概率的方法进行参数的灵敏度分析,并研究参数的变异系数对结构可靠性的影响。结果表明:在外载荷低于10000 N,结构失效概率小于0.00017的情况下,当外载荷达到12700 N时,结构失效概率达到0.9;面板的力学性能、面板厚度、蜂窝芯厚度对冲击后压缩强度的影响较大;冲击后压缩强度的变异系数随着参数变异系数的增大而增大。

关键词：蜂窝夹芯结构冲击后压缩神经网络可靠性灵敏度复合材料

污染场地中有机氯农药对土壤原生动物群的影响

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生态毒理学报 2012年第6期7卷 603-608页

作者：黄敦奇史雅娟张强斌吕永龙胡文友郭非凡中国石油大学(北京)地球科学学院北京102249 中国石油大学(北京)油气资源与勘探国家重点实验室北京102249 中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085 中国科学院南京土壤研究所南京210008 中国农业大学资源与环境科学学院北京100094

有机氯农药污染土壤对生态环境具有潜在的风险。采集某废弃农药厂污染场地的土壤样品,测定了土壤的理化性质,以及典型有机氯农药滴滴涕(DDTs)和六六六(HCHs)的残留浓度,并对土壤中原生动物的组成和数量进行了分析。结果显示,农药厂区域... 详细信息

有机氯农药污染土壤对生态环境具有潜在的风险。采集某废弃农药厂污染场地的土壤样品,测定了土壤的理化性质,以及典型有机氯农药滴滴涕(DDTs)和六六六(HCHs)的残留浓度,并对土壤中原生动物的组成和数量进行了分析。结果显示,农药厂区域的土壤中原生动物的组成结构为:鞭毛虫和肉足虫为优势类群,纤毛虫为稀有类群。土壤理化性质与原生动物数量的相关性分析表明,总氮含量与鞭毛虫、纤毛虫数量和原生动物总数量呈显著正相关,总磷含量与肉足虫数量呈显著正相关。同时,农药厂区域土壤中的原生动物数量较对照区显著减少,污染场地中长期残留的有机氯农药对原生动物有明显抑制作用。

关键词：污染场地有机氯农药 POPs 土壤原生动物生态效应

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页岩气开采用水量影响因素分析

油气田环境保护 2018年第2期28卷 46-50,56,62页

作者：贾婉琳曾勇张强斌王新伟中国石油大学(北京)地球科学学院油气资源与探测国家重点实验室

不同页岩区块开采用水量差异显著。目前,关注页岩气开采用水量的研究多忽略了导致用水量差异的影响因素分析。文章选取中国、美国和加拿大15个典型页岩区块为样本,选取了影响用水量大小的相关指标,应用多元逐步回归分析和聚类分析方法... 详细信息

不同页岩区块开采用水量差异显著。目前,关注页岩气开采用水量的研究多忽略了导致用水量差异的影响因素分析。文章选取中国、美国和加拿大15个典型页岩区块为样本,选取了影响用水量大小的相关指标,应用多元逐步回归分析和聚类分析方法定量分析影响因素之间的统计规律。逐步回归分析结果表明,厚度、孔隙度、黏土含量、水平段长度与页岩气开采用水量显著相关,其中表征压裂作业量大小的指标——厚度和水平段长度与用水量正相关;表征储层可改造性指标——孔隙度与用水量负相关,黏土含量与用水量正相关,根据回归方程可预测类似页岩气开采用水量。根据聚类分析谱系图,依据用水量大小、压裂作业量大小、储层可改造性难易程度的差异可以将15个页岩区块分为3类;聚类分析结果进一步验证了压裂作业量大小和储层可改造性是影响页岩气开采用水量的显著因素。

关键词：页岩气用水量影响因素聚类分析多元逐步回归分析

Chirally assembled plasmonic metamolecules from intrinsically chiral nanoparticles

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Nano Research 2022年第10期15卷 9447-9453页

作者： Jiahao Pan Xiaoyao Wang Jinjin zhang Qin zhang qiangbin Wang Chao Zhou School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Nano-Bio Interface Suzhou Key Laboratory of Functional Molecular Imaging TechnologyDivision of Nanobiomedicine and i-labSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123China Jiangsu Key Laboratory of Thin Films School of Physical Science and TechnologySoochow UniversitySuzhou 215006China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

Significant chiroptical responses could be generated by chiral coupling of achiral plasmonic nanoparticles,or originated from intrinsically chiral plasmonic *** we create dimeric plasmonic metamolecules possessing both chiral coupling between nanoparticles and intrinsic chiroptical responses derived from nanoparticles *** plasmonic metamolecules are prepared by assembling helical plasmonic nanorods(HPNRs)with intrinsic chirality in chiral manners on DNA origami *** HPNRs with the same or opposite chirality,or one HPNR and one achiral gold nanorod,are coupled chirally into dimeric metamolecules with intriguing plasmonic circular dichroism(PCD).We found that both of the intrinsic chirality of constituent HPNRs and the chiral coupling contribute to the overall PCD while their weights are different in different metamolecules and vary in different wavelength range for a certain *** to conventional chiral plasmonic metamolecules from achiral nanoparticles,or discrete chiral nanoparticles,these metamolecules bring more dimensions for tailoring chiroptical responses and make it more flexible to design plasmonic nanodevices with custom PCD.

关键词： chiral plasmonics DNA origami plasmonic circular dichroism gold nanoparticle

One-Pot Polymerase Chain Reaction with Gold Nanoparticles for Rapid and Ultrasensitive DNA Detection

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维普期刊数据库

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Nano Research 2010年第8期3卷 557-563页

作者： Miao Cai Feng Li Yan zhang qiangbin Wang i-Lab Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

We report a novel method for rapid,colorimetric detection of a specific deoxyribonucleic acid(DNA)sequence by carrying out a polymerase chain reaction in the presence of gold nanoparticles functionalized with two *** of the primers when the target DNA is present as a template during the polymerase chain reaction process affords the complementary sequences on the gold nanoparticle surfaces and results in the formation of gold nanoparticle aggregates with a concomitant color change from red to pinkish/*** method provides a convenient and straightforward solution for ultrasensitive DNA detection without any further post-treatment of the polymerase chain reaction products being necessary,and is a promising tool for rapid disease diagnostics and gene sequencing.

关键词： deoxyribonucleic acid(DNA)detection polymerase chain reaction(PCR) Au nanoparticle colorimetric

The activity of Zn precursors determines the cation exchange reaction kinetics with Ag_(2)S:Zn-doped Ag_(2)S or Ag_(2)S@ZnS QDs

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Nano Research 2023年第10期16卷 12315-12322页

作者： Zhiyong Tang Hongchao Yang Ziqiang Sun Yejun zhang Guangcun Chen qiangbin Wang CAS Key Laboratory of Nano-Bio Interface Division of Nanobiomedicine and i-LabSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Nano Science and Technology Institute University of Science and Technology of ChinaHefei 230026China

Cation exchange(CE)has been emerged as a promising post-synthesis strategy of colloidal ***,it is unclear how the cation precursor affects the CE process and the final colloidal ***,we utilized two Zn-B Lewis acidbase adduct complexes(B=oleylamine(OAM)and methanol(MeOH))as Zn precursors for CE with Ag_(2)S quantum dots(QDs).Our study revealed that the steric hindrance and complexing capabilities of Zn precursor significantly affect the CE *** a result,the Zn-doped Ag_(2)S(Zn:Ag_(2)S)and Ag_(2)S@ZnS core–shell QDs were successfully obtained with enormous enhancement of their photoluminescence(PL)*** simulation showed that the Zn-OAM with higher desolvation energy and spatial hindrance tended to form doped Zn:Ag_(2)S QDs due to the inefficient cation *** the Zn-MeOH with lower exchange barrier promoted the conversion of Ag-S to Zn-S,thus forming Ag_(2)S@ZnS core–shell *** anticipate that this finding will enrich the regulatory approaches of post-synthesis of colloidal nanocrystals with desirable properties.

关键词： cation exchange Ag_(2)S quantum dots phase structure desolvation coordination

Glutathione-capped quantum dots for plasma membrane labeling and membrane potential imaging

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Nano Research 2019年第6期12卷 1321-1326页

作者： Guangcun Chen Yejun zhang Zhao Peng Dehua Huang Chunyan Li qiangbin Wang CAS Key Laboratory of Nano-Bio Interface Division of Nanobiomedicine and i-LabCAS Center for Excellence in Brain ScienceSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China School of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

The plasma membrane of cells is a crucial biological membrane that involved in a variety of cellular processes including cell signaling transduction through membrane electrical ***,monitoring membrane electrical activity using fluorescence imaging has attracted numerous attentions for its potential applications in evaluating how the nervous system ***,the development of ideal fluorescent voltage-sensitive probes with both high membrane labeling efficiency and voltage sensitivity is still retain a big ***,glutathionecapped CdSe@ZnS quantum dots (CdSe@ZnS-GSH QDs) with a size of 2.5 nm and an emission peak at 520 nm are synthesized using a facile ligand exchange method for plasma membrane labeling and membrane potential *** as-synthesized CdSe@ZnS-GSH QDs can effectively label cell membrane at neutral pH within 30 min and exhibit excellent optical stability in continuous imaging for up to 60 *** the test concentration up to 200 nM,CdSe@ZnS-GSH QDs show high biocompatibility to cells and do not affect cell proliferation,disturb cell membrane integrity or cause apoptosis and necrosis of ***,a two-component voltage sensor strategy based on fluorescence resonance energy transfer (FRET) between CdSe@ZnS-GSH QDs and the dipicrylamine (DPA) is successfully developed to monitor the membrane potential by the fluorescence of CdSe@ZnS-GSH *** study offers a facile strategy for labeling plasma membrane and monitoring the membrane potential of cells and will hold great potential in the research of signaling within intact neuronal circuits.

关键词： quantum dots membrane labeling membrane potential imaging fluorescence imaging neuron