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假稻生物学特性及其对除草剂的敏感性测定

上海农业学报 2009年第1期25卷 109-113页

作者：陆保理沈国辉王玉香张建新钱振官管丽琴李涛程秋华顾月兰上海市嘉定区农业技术推广服务中心上海201800 上海市农业科学院植物保护研究所上海201106

详细描述和鉴别了上海市嘉定区直播稻田假稻生物学特性,测定了假稻对直播水稻的产量影响,并选用6种对禾本科杂草有较好防效的稻田除草剂进行假稻的敏感性测定。结果表明,假稻在上海市嘉定区能够全年发生,其中3月底至5月、7月底至10月分... 详细信息

详细描述和鉴别了上海市嘉定区直播稻田假稻生物学特性,测定了假稻对直播水稻的产量影响,并选用6种对禾本科杂草有较好防效的稻田除草剂进行假稻的敏感性测定。结果表明,假稻在上海市嘉定区能够全年发生,其中3月底至5月、7月底至10月分别为麦茬田、稻茬田生长盛期,种群发展蔓延迅速;直播水稻产量(y)与假稻密度(x)呈极显著的负相关,回归方程为y=476.5026-0.5366x(r=0.9535);上海市嘉定区的假稻种群对所有供试除草剂均具有极强的耐药性。

关键词：假稻生物学特性产量损失防除效果

海蓬子(Salicornia europaea)生态浮床对富营养化海水的净化效果研究

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生态与农村环境学报 2024年第4期40卷 548-555页

作者：罗梓峻李秋芬田文杰左涛陈聚法中国水产科学研究院黄海水产研究所山东青岛266071 上海海洋大学水产与生命学院上海201306

因陆源污染输入和沿岸养殖业发展,我国近岸和入海口海域富营养化严重。该研究利用海蓬子(Salicornia europaea)高耐盐碱性、潮汐带生长的特点,通过浮床栽培探究了其对富营养海水的净化效果。实验构建褐牙鲆(paralichthys olivaceus)养... 详细信息

因陆源污染输入和沿岸养殖业发展,我国近岸和入海口海域富营养化严重。该研究利用海蓬子(Salicornia europaea)高耐盐碱性、潮汐带生长的特点,通过浮床栽培探究了其对富营养海水的净化效果。实验构建褐牙鲆(paralichthys olivaceus)养殖池和浮床净化池的循环水净化系统,模拟持续污染的富营养化海水环境。通过在浮床上移植海蓬子幼苗,测定不同水体中氨氮(NH_(4)^(+)-N)、硝态氮(NO_(3)^(-)-N)、亚硝态氮(NO_(2)^(-)-N)和磷酸盐(pO_(4)^(3-)-p)浓度4种营养盐指标的变化情况及植物存活、生长状况,研究海蓬子的净化效果。实验结果表明,海蓬子对NH_(4)^(+)-N吸收效果显著(p2 h的水力停留时间下最高去除率为32.97%;对NO_(2)^(-)-N的净化效果显著(ppO_(4)^(3-)-p和NO_(3)^(-)-N有去除效果,但不显著;浮床上的海蓬子存活率达93%以上,植株有明显生长,25 d总体长度增长12%,鲜重增加102%,干重增加83%。研究结果说明海蓬子可以作为生态浮床的工具植物,对近岸和入海口富营养化海水进行净化,为海洋生态环境保护提供技术支撑。

关键词：海蓬子生态浮床生境修复富营养化海水

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横向光力最新研究进展(特邀)

光学学报 2024年第7期44卷 1-26页

作者：施宇智赖成兴夷伟成黄海洋冯超何涛刘爱群仇成伟王占山程鑫彬同济大学物理科学与工程学院同济大学精密光学工程技术研究所上海200092 先进微结构材料教育部重点实验室上海200092 上海市数字光学前沿科学研究基地上海200092 上海市全光谱高性能光学薄膜器件及应用专业技术服务平台上海200092 香港理工大学电机与电子工程学系中国香港999077 新加坡国立大学电气与计算机工程系新加坡117583

光镊技术利用光和物质之间动量交换产生的光力对细小颗粒进行操控,具有无接触、操控尺寸小、精度高等特点,在基础物理、量子计算、生物医学等领域得到了广泛的应用。其中,横向光力(也称光横向力,OLF)是一种垂直于光的传播方向且与场强... 详细信息

光镊技术利用光和物质之间动量交换产生的光力对细小颗粒进行操控,具有无接触、操控尺寸小、精度高等特点,在基础物理、量子计算、生物医学等领域得到了广泛的应用。其中,横向光力(也称光横向力,OLF)是一种垂直于光的传播方向且与场强度梯度无关的特殊光力。近十年来,OLF的理论研究和实验探索成为了热点课题,在手性颗粒等超精密分选、光动量探测等方面有重要应用。从OLF的原理和产生条件、不同物理机制,以及在生物医学和物理化学等领域的应用等方面出发,对OLF的发展进行回顾和讨论,并对新的产生机制和更多的潜在应用与挑战进行展望。

关键词：横向光力角动量光学操控光学自旋手性颗粒

zinc oxide nanoparticles affect neuroplasticity and spatial learning and memory ability in hippocampus of wistar rats

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Zinc oxide nanoparticles affect neuroplasticity and spatial ...

Jasmonic Acid is Induced in a Biphasic Manner in Response of pea Seedlings to Wounding

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： da-dong HAN~1 Jin-Xia zHAO~2 tao zHANg~2 guo-gang REN~3 zhuo yang~(1 *) 1 Laboratory of Neurophysiology Medical School Nankai University Tianjin 300071 china 2 Laboratory of Bioinformatics Life Science institute Nankai University Tianjin 300071 china 3 University of Hertfordshire Hatfield Herts AL10 9AB UK

＜正＞Objective zinc oxide nanoparticles（znO） are widely applied in toothpaste,beauty products,sunscreens, coating and textiles as base material or *** biological properties of the znO have been investigated in etiology,pathology,physiology and *** study focuses on the effects of znO nanoparticles on neuroplasticity and spatial learning and memory in hippocampus of Wistar *** underlined mechanism to interpret the interactive behaviour was studied *** Experimental methods involved using znO nanoparticles suspension （4mg/kg,0.4mg/mL,i.p.,b.i.w.） which was injected into 4-week-old male Wistar rats,for 8 weeks and subsequently long- term potentiation（LTp） and long-term depression（LTd） were evaluated and numerically *** water maze （MWM）,including place navigation test,spatial probe test and reversal acquisition phases,was also detected and ***’s and HE staining processes were employed in order to define pathological ***（1） It is shown that the LTp was significantly enhanced,including slope of field excitatory postsynaptic potential（fEpSp, 168.156±4.540） and amplitude of population spike（pS,286.872±16.587）,in rats treated by znO,compared to those of the control group（fEpSp,126.465±3.767;pS,175.773±10.042,p＜0.01,p＜0.01）.However,no change was found in the LTd and, neither the slope of fEpSp nor amplitude of the pS（p＞0.05） was shafted.（2） In the mentioned navigation test,the escape time was prolonged in rats treated by znO（18.355±2.956） compared with control group（10.838±2.346）.In spatial probe test, the ratio of time spent in the target quadrant（36.283±5.372） was reduced and the number of crossing the plate（2.8333+0.7923） was decreased in znO treated group compared with those of control group（6.667±0.803;55.817±3.051,p＜0.01,p＜0.01）.In reversal acquisition phase,the escape time was prolonged（18.384±4.404） in znO-treated group compared with that of control group（9.205±2.516,p＜0.01）.（3） Nissle’s staining

关键词： zinc oxide nanoparticles neuroplasticity LTp LTd spatial learning and memory Morris water Maze hippocampus

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Journal of Integrative plant Biology 2009年第6期51卷 562-573页

作者： Hao-Ru yang Ke Tang Hong-tao Liu qiu-Hong pan Wei-dong Huang College of Food Science and Nutritional Engineering China Agricultural University Beijing 100083 China institute of geographic sciences and Natural Resources Research the Chinese Academy of Sciences Beijing 100101 China

The role of jasmonic acid （JA） in plant wounding response has been demonstrated. However, the source of JA in wound signaling remains unclear. In the present study, pea seedlings were used as material to investigate the systemic induction of JA and the activation of lipoxygenase （LOX）-dependent octadecanoid pathway upon wounding. The results showed that endogenous JA could induce two peaks in the wounded leaves and the stalks, while only one peak in the systemic leaves. LOX activity and its protein amount were also induced and the stimulation mainly occurred in the late phase, while one peak of induction was present after pretreatment with JA. Applied nordihydroguaiaretic acid （NdgA）, an inhibitor of LOX activity, only inhibited the induction of JA in the late phase, and the resistance of pea was impaired. Furthermore, 13（S）- hydroperoxy-9（z）, 11 （E）-octadecadienoic acid （13（S）-H（p）OdE） was confirmed to be the main product of LOX throughout the experimental time. in addition, immunocytochemical analysis also revealed the occurrence of JA biosynthesis and transport upon wounding. These results demonstrated that wound-induced JA in wounded leaves resulted from its biosynthesis and conversion from its conjugates, while in systemic leaves resulted from its transport and biosynthesis; and proved that the LOX pathway was vital to the wound-induced defense response involved in JA biosynthesis.

关键词： defense response jasmonic acid lipoxygenase pea (pisum sativum L.).

periodic radio variability in NRAO 530:phase dispersion minimization analysis

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Research in Astronomy and Astrophysics 2012年第6期12卷 643-650页

作者： Jun-Chao Lu Jun-yi wang tao An Ji-Ming Lin Hong-Bing qiu Key Laboratory of Cognitive Radio&Information processing the Ministry of EducationGuilinUniversity of Electronic TechnologyGuilin 541004China School of Mathematics and Computational Science Xiangtan UniversityXiangtan 411105China shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China

A periodicity analysis of the radio light curves of the blazar NRAO 530 at 14.5, 8.0, and 4.8 gHz is presented employing an improved phase dispersion mini- mization technique. The result, which shows two persistent periodic components of 6 and ~ 10 yr at all three frequencies, is consistent with the results obtained with the Lomb-Scargle periodogram and weighted wavelet z-transform algorithms. The reliability of the derived periodicities is confirmed by the Monte Carlo numerical sim- ulations which show a high statistical confidence. （Quasi-）periodic fluctuations of the radio luminosity of NRAO 530 might be associated with the oscillations of the accre- tion disk triggered by hydrodynamic instabilities of the accreted flow.

关键词： methods: statistical -- galaxies: active -- galaxies: quasar: individual:NRAO 530

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多孔介质壁面湍流边界层的研究进展

上海大学学报（自然科学版） 2024年第5期30卷 790-801页

作者：刘宇陆马玉朋王超陶亦舟李家骅夏玉显邱翔上海大学力学与工程科学学院上海200444 上海大学上海市应用数学和力学研究所上海200072 上海应用技术大学理学院上海201418 上海应用技术大学机械工程学院上海201418 上海应用技术大学城市建设与安全工程学院上海201418

多孔介质壁面的可渗透性加强了界面附近的动量和能量输运,增加了多孔介质壁面湍流边界层中流动的复杂性.多孔介质壁面直接影响着湍流边界层中的湍流结构时空演化及各种物理量的生成机制和输运特性.本工作总结了多孔介质壁面湍流边界层... 详细信息

多孔介质壁面的可渗透性加强了界面附近的动量和能量输运,增加了多孔介质壁面湍流边界层中流动的复杂性.多孔介质壁面直接影响着湍流边界层中的湍流结构时空演化及各种物理量的生成机制和输运特性.本工作总结了多孔介质壁面湍流边界层统计特性和湍流结构特性的最新研究进展.首先,概述了多孔介质基底特性对边界层湍流特性的影响,包括对平均统计量、壁面摩擦因数和湍流结构的研究,指出多孔壁面湍流边界层的结构特性与开尔文-亥姆霍兹(Kelvin-Helmholtz,KH)不稳定性密切相关;其次,总结了多孔介质边界层中大尺度湍流结构对近壁区小尺度湍流结构的调制作用;最后,给出了该领域的未来研究方向.

关键词：多孔介质湍流边界层湍流结构

Ordered mesoporous carbon-silica frameworks confined magnetic mesoporous TiO_(2) as an efficient catalyst under acoustic cavitation energy

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Journal of Materiomics 2020年第1期6卷 45-53页

作者： pengpeng qiu tao zhao Jeehyeong Khim Wan Jiang Lianjun wang Wei Luo State Key Laboratory for Modification of Chemical Fibers and polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityShanghai201620China School of Civil Environmental and Architectural EngineeringKorea UniversitySeoul136-701Republic of Korea

Herein,we report a biphase stratification strategy that enables the encapsulation of magnetic mesoporous TiO_(2) inside an ordered mesoporous C/SiO_(2) *** obtained composites exhibit high surface areas(up to 600 m^(2) g^(-1)),large perpendicular pore sizes(up to 9 nm)and a strong magnetic response(~10.0 emu g^(-1)),presenting significantly enhanced degradation activities toward pentachlorophenol(pCp)and bisphenol-A(BpA)under acoustic cavitation *** remarkable performance is ascribed to the synergistic effect from the unique structural modulation:1)The large ordered mesopores favors the mass transfer,2)The mesoporous C/SiO_(2) frameworks promote the adsorption of organic pollutants and enrich them close to the TiO_(2) surface and 3)The special spatial arrangement of different components facilitates the generation of cavitation bubbles,leading to the increase in the overall hydroxyl-radical-production ***,owing to the effective confinement,the as-prepared materials possess an excellent stability and *** importantly,the catalysts can easily be recovered by a magnet and show an excellent *** is believed that these results could provide an important insight for the development of an efficient,stable and facile recoverable catalyst for the acoustic chemical process.

关键词： Fe_(3)O_(4)@mTiO_(2)@mC/SiO_(2) Acoustic cavitation Magnetic separation Mechanical stability

A novel human phosphatidylethanolamine-binding protein resists tumor necrosis factor α-induced apoptosis by inhibiting mitogen-activated protein kinase pathway activation and phosphatidylethanolamine externalization

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A novel human phosphatidylethanolamine-binding protein resis...