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体内和体外生物测定在环境监测中的应用(英文)

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化学进展 2009年第2期21卷 483-491页

作者： Margaret b.Murphy 林忠华林群声香港城市大学生物及化学系中国香港

生物测定在环境毒物学研究中普遍用于检测人为污染物对个别生物体和生态系统的影响。这些测定适用于个别化学品或复杂的混合物(如废水)对有代表性的生物系统或整个生物体所引起的影响,并普遍应用于环境监测项目。生物测定可在生物体外... 详细信息

生物测定在环境毒物学研究中普遍用于检测人为污染物对个别生物体和生态系统的影响。这些测定适用于个别化学品或复杂的混合物(如废水)对有代表性的生物系统或整个生物体所引起的影响,并普遍应用于环境监测项目。生物测定可在生物体外或生物体内进行,前者是在实验室内利用细胞培养技术,后者除可在实验室内进行还可应用在真实的环境中。体外生物测定往往是用来研究环境样品中的污染物对生物机制的具体影响,如受体结合特性,而体内活性生物测定则提供了一个更加具体化的综合生物反应。然而,这两种类型的生物测定法可以测量许多不同的生物指标,如对生物生长及发育的影响、内分泌功能和DNA损伤。无论是在体内和体外生物测定都分别有其特有的优点和缺点,其中一些测定法可以使用于毒性鉴定和评价程序。本文简要介绍了体内和体外生物测定方法的基本特点及其在环境监测中的应用实例,指出化学物质如何影响有机体及生态系统的结构和功能,认为广泛发展更能充分反映生态系统生物多样性的生物测定方法,将有助于更准确地了解环境污染物对环境的潜在影响。

关键词：生物测定环境监测污染物在体外在体内生态系统

二-吡啶氧基-轴向取代-四-α-(3-戊氧基)锡(IV)酞菁的合成与表征

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有机化学 2008年第5期28卷 910-913页

作者：彭亦如曹育红黄风华翁家宝黄小霞福建师范大学化学与材料学院

以3-硝基邻苯二甲腈为起始原料,与正戊醇反应合成3-戊氧基邻苯二甲腈(1),然后在高温溶剂1-氯萘中经缩聚反应合成二氯-轴向取代-四-α-(3-戊氧基)锡酞菁(2),2进一步与2-羟基吡啶在N,N-二甲基甲酰胺中合成二-吡啶氧基-轴向取代-四-α-(3-... 详细信息

以3-硝基邻苯二甲腈为起始原料,与正戊醇反应合成3-戊氧基邻苯二甲腈(1),然后在高温溶剂1-氯萘中经缩聚反应合成二氯-轴向取代-四-α-(3-戊氧基)锡酞菁(2),2进一步与2-羟基吡啶在N,N-二甲基甲酰胺中合成二-吡啶氧基-轴向取代-四-α-(3-戊氧基)锡酞菁配合物3,同时对相关化合物分别进行了元素分析,IR,1H NMR,UV/Vis,荧光和质谱表征.

关键词：轴向取代锡酞菁合成表征

Effect of Radial Porosity Oscillation on the Thermal Performance of Packed bed Latent Heat Storage

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Engineering 2021年第4期7卷 515-525页

作者： H.b.Liu C.Y.Zhao Institute of Engineering Thermo-Physics School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Owing to its high heat storage capacity and fast heat transfer rate,packed bed latent heat storage(LHS)is considered as a promising method to store thermal *** a packed bed,the wall effect can impact the packing arrangement of phase change material(PCM)capsules,inducing radial porosity *** this study,an actual-arrangement-based three-dimensional packed bed LHS model was built to consider the radial porosity *** fluid flow and heat transfer were *** different cylindrical sub-surfaces intercepted along the radial direction in the packed bed,the corresponding relationships between the arrangement of capsules and porosity oscillation were *** oscillating distribution of radial porosity led to a non-uniform distribution of heat transfer fluid(HTF)*** a result,radial temperature distributions and liquid fraction distributions of PCMs were further *** effects of different dimensionless parameters(e.g.,tube-to-capsule diameter ratio,Reynolds number,and Stefan number)on the radial characteristics of HTF and PCMs were *** results showed that different diameter ratios correspond to different radial porosity ***,with an increase in diameter ratio,HTF velocity varies significantly in the near wall region while the non-uniformity of HTF velocity in the center region will *** Reynolds and Stefan numbers slightly impact the relative velocity distribution of the HTF-while higher Reynolds numbers can lead to a proportional improvement of velocity,an increase in Stefan number can promote heat storage of the packed bed LHS system.

关键词： Packed bed latent heat storage Radial porosity oscillation Fluid flow Heat transfer Diameter ratio

High-Performance InTiZnO Thin-Film Transistors Deposited by Magnetron Sputtering

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Chinese Physics Letters 2013年第12期30卷 126-129页

作者： LIU Ao LIU Guo-Xia SHAN Fu-Kai ZHU Hui-Hui b.C.Shin W.J.Lee C.R.Cho College of Physics Science Qingdao UniversityQingdao 266071 Lab of New Fiber Materials and Modern Textile Growing Base for State Key LaboratoryQingdao UniversityQingdao 266071 Electronic Ceramics Center DongEui UniversityBusan 614714South Korea College of Nanoscience and Nanotechnology Pusan National UniversityBusan 609735South Korea

InTiZnO thin-film transistors(ITZO TFTs)with Al_(2)O_(3)gate dielectrics are fabricated by magnetron sputtering at room *** bottom-gate-type ITZO TFTs with amorphous Al_(2)O_(3)gate dielectrics are operated in the enhancement mode and exhibit a mobility of 50.4 cm^(2)/V·s,threshold voltage of 1.2 V,subthreshold swing of 94.5 mV/decade,and on/off-current ratio of 7×10^(6).We believe that ITZO deposited at room temperature is an appropriate semiconductor material to produce high-mobility TFTs for developing flexible electronic devices.

关键词： temperature mobility film

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Charlotte's web

Charlotte's web

Spectroscopic analysis of trivalent Nd3+/Yb3+ions codoped in PZS host glasses as a new laser material at 1.06μm

作者： E.b. White pictures by Garth Williams.

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Journal of Rare Earths 2017年第4期35卷 361-367页

作者： b.Afef H.H.Hegazy H.Algami Y.Yang K.Damak E.Yousef R.Maalej Georessoures Materials Enviroment and Global Changes Laboratory Faculty of SciencesUniversity of SfaxSfax 3018Tunisia Department of Physics Faculty of SciencesAI Azhar UniversityAssuit branchAssuit 11795Egypt Department of Physics Faculty of SciencesKing Kha[id UniversityP.O.Box 9004Abha 61466Saudi Arabia College of Physics Science and Technology Hebei UniversityBaoding 071002China Department of Physics Pukyong National UniversityBusan 608-737Republic of Korea

This paper reports on the spectral results of Nd3＋/yb3＋ ions codoped 50P2Os-30ZnO-20SrO （PZS, in mol.%） glasses which were prepared by a melting technique. The glass transition temperature and spectroscopic properties of these glasses were estimated. From the absorption spectra, Judd-Ofelt （J-O） intensity parameters （Ωk）, were calculated. Using J-O intensity parameters, several radiative properties such as spontaneous transition probabilities （AR）, radiative branching ratios （fiR） and radiative lifetimes （rR） were determined for the exciting levels of the Nd3＋ ions. The large value of the stimulated integrated cross-section and the lifetimes of Nd3~ level revealed the potential of the present glasses as a candidate for generating laser emission at 1.06/am as continuous wave laser action and exploited for optical device fabrication. A broad emission band from 950 to 1100 nm was detected when the Nd3＋/yb3＋ was co-doped in PZS glasses excited by 805 nm lighting diode （LD）. The energy transfer process from Nd3＋--→Yb3＋ in co-doped phos- phate glasses was described in this paper.

关键词： phosphate glasses Nd3+,yb3+ ions optical spectroscopy Judd-Ofelt analysis luminescence rare earths

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结构损伤位置识别的位移DLV方法

工程力学 2009年第5期26卷 209-215页

作者：张宇鑫 Shinae Jang b.F.Spencer 上海师范大学建筑工程学院上海201418 伊利诺伊大学香槟分校土木工程系美国61801

DLV(damage locating vector)家族方法由bERNAL于2002年提出后,因其创新巧妙的求解思想而引起结构健康监测研究领域的广泛关注。其应用于加速度测试数据进行结构损伤定位识别的有效性已通过多组试验得到证明。然而基于静力测试数据进行... 详细信息

DLV(damage locating vector)家族方法由bERNAL于2002年提出后,因其创新巧妙的求解思想而引起结构健康监测研究领域的广泛关注。其应用于加速度测试数据进行结构损伤定位识别的有效性已通过多组试验得到证明。然而基于静力测试数据进行结构损伤识别将具有更高的精度和数值稳定性。该文基于静力位移测试数据,构建结构柔度矩阵,提出位移DLV方法,并编制了通用有限元程序。通过数值仿真分析对位移DLV方法的有效性进行了研究,数值分析结果表明:位移DLV方法能够利用少数测点信息识别出结构的损伤位置。同时研究了若干影响因素如测点数量、损伤位置、测点布置、测量误差等对方法应用的影响。

关键词：结构健康监测损伤识别 DLV(damage locating vector) 静力位移测点布置

basic Principles of Mutagenicity Tests for the Detection of Environmental Pollutants with Particular Emphasis on Plant bioassays

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环境与职业医学 2004年第3期21卷 237-242页

作者： S.Knasmüller M.Uhl b.J.Majer Institute of Cancer Research Borschkegasse8A1090ViennaAustriaInstitute of Cancer ResearchBorschkegasse8A1090ViennaAustriaInstitute of Cancer ResearchBorschkegasse8A1090ViennaAustria

Genetic toxicology is a multidisciplinary field of research involved in detecting DNA damaging and protective compounds, understanding the biological consequences of DNA damage and their molecular modes of action that... 详细信息

关键词：环境污染物质生物测定变性试验外周环境毒物学

Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test

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Journal of Iron and Steel Research International 2018年第5期25卷 539-545页

作者： Qing-bao Yang Jun-ying Min John E. Carsley Yuan-yuan Wen bernd Kuhlenkotter Thomas b. Stoughton Jian-ping Lin School of Mechanical Engineering Tongji UniversityShanghai 201804 China General Motors Research & Development WarrenMI 48095-9055 USA Chair of Production Systems Ruhr-University BochumBochum 44780 Germany

Plane-strain forming limit strain （also known as FLD0） is an important data point on a forming limit diagram （FLD）. The effects of friction coefficients and material parameters on the specimen width associated with the FLDo （W FLD0） in Marciniak test were studied by finite element simulation. WFLD0 was expressed as a function of the Lankford coefficients, n-value, k-value and sheet thickness and validated with various sheet materials. The determination of W FLD0 is of significance not only to reduce iterative attempts to accurately obtain FLDo, but also to obtain a full valid FLD with the least number of test specimens, which largely increases the efficiency and reduces cost to experimentally measure valid FLDs.

关键词： Forming limit test ·Sheet metal· Plane-strain state· Marciniak test