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A sensing mechanism for the detection of carbon nanotubes using selective photoluminescent probes based on ionic complexes with organic dyes

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Light(Science & Applications) 2016年第1期5卷 686-694页

作者： Petro Lutsyk Raz Arif Jan Hruby Anatolii Bukivskyi Olexander Vinijchuk Mykola Shandura Viktor Yakubovskyi Yuri Kovtun Graham A Rance Michael fay Yuri Piryatinski Oleksiy Kachkovsky Anatoli Verbitsky Aleksey Rozhin Institute of Physics National Academy of Sciences of Ukraine46prospekt Nauky03680 KyivUkraine School of Engineering&Applied Science Aston UniversityAston TriangleB47ET BirminghamUK Physics Department Faculty of ScienceUniversity of SulaimaniP.O.Box 334SulaimaniIraq-Kurdistan Region Brno University of Technology CEITEC BUTTechnicka´3058/1061600 BrnoCzech Republic Institute of Organic Chemistry National Academy of Sciences of Ukraine5 Murmanska str.02660 KyivUkraine School of Chemistry University of NottinghamUniversity ParkNottinghamNG72RDUK Nottingham Nanotechnology and Nanoscience Centre University of NottinghamUniversity ParkNottinghamNG72RDUK

The multifunctional properties of carbon nanotubes(CNTs)make them a powerful platform for unprecedented innovations in a variety of practical *** a result of the surging growth of nanotechnology,nanotubes present a potential problem as an environmental pollutant,and as such,an efficient method for their rapid detection must be ***,we propose a novel type of ionic sensor complex for detecting CNTs–an organic dye that responds sensitively and selectively to CNTs with a photoluminescent *** complexes are formed through Coulomb attractions between dye molecules with uncompensated charges and CNTs covered with an ionic surfactant in *** demonstrate that the photoluminescent excitation of the dye can be transferred to the nanotubes,resulting in selective and strong amplification(up to a factor of 6)of the light emission from the excitonic levels of CNTs in the near-infrared spectral range,as experimentally observed via excitation-emission photoluminescence(PL)*** chirality of the nanotubes and the type of ionic surfactant used to disperse the nanotubes both strongly affect the amplification;thus,the complexation provides sensing selectivity towards specific ***,neither similar uncharged dyes nor CNTs covered with neutral surfactant form such *** model organic molecules,we use a family of polymethine dyes with an easily tailorable molecular structure and,consequently,tunable absorbance and PL *** provides us with a versatile tool for the controllable photonic and electronic engineering of an efficient probe for CNT detection.

关键词： carbon nanotubes ionic surfactant organic dye photoluminescence sensor

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Natural Convection in a Horizontal Cylinder with Partial Heating: Energy Efficiency Analysis

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Journal of Thermal Science 2020年第6期29卷 1531-1550页

作者： MAZGAR Akram JARRAY Khouloud HAJJI Fadhila BEN NEJMA faycal The Higher Institute of Applied Sciences and Technology of Sousse University of SousseTunisia-Ibn Khaldun StreetTaffala City4003 SousseTunisia The Preparatory Institute for Engineering Studies of Monastir University of MonastirTunisia-Rue Ibn El Jazzar5019 MonastirTunisia

The current study reports a numerical analysis of free convection of air in an isothermal horizontal cylinder,cooled and heated at different wall *** heater sizes are discussed in this *** first heated zone is spread across one-quarter of the sidewall;the second is uniformly distributed over the half of the wall and the third active wall covers three-quarters of the *** various locations are considered and examined for each active zone of the *** computation is carried out for Rayleigh number ranging from 102 to *** results characterizing heat transfer and flow features are achieved using an iterative model developed in COMSOL *** effect of Rayleigh number on heat transfer and fluid flow characteristics within the cavity are *** attention is paid to the influence of heater location and heater size on energy *** is found that the mean Nusselt number and dimensionless velocity increase when increasing the Rayleigh ***,the optimal level of energy efficiency is achieved if the heating zone is centered at the upper part of the cylinder,regardless of the heater *** is also shown that the optimal configuration providing higher energy efficiency is obtained when three-quarters of the sidewall are locally heated,and more precisely,if the active zone is centered at the top of the cylinder.

关键词： natural convection cylinder partial heating energy efficiency Rayleigh number

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Markers for neural degeneration and regeneration:novel highly sensitive methods for the measurement of thrombin and activated protein C in human cerebrospinal fluid

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Neural Regeneration Research 2021年第10期16卷 2086-2092页

作者： Alexandra Gerasimov Valery Golderman Shany Guly Gofrit Shay Anat Aharoni Daniela Noa Zohar Ze’ev Itsekson-Hayosh Tsviya fay-Karmon Sharon Hassin-Baer Joab Chapman Nicola Maggio Efrat Shavit-Stein Department of Neurology The Chaim Sheba Medical CenterRamat GanIsrael Department of Neurology and Neurosurgery Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael The Movement Disorders Institute Chaim Sheba Medical CenterRamat GanIsrael Sagol School of Neuroscience Tel Aviv UniversityTel AvivIsrael Department of Physiology and Pharmacology Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael Robert and Martha Harden Chair in Mental and Neurological Diseases Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael Talpiot Medical Leadership Program The Chaim Sheba Medical CenterRamat GanIsrael

Inflammation and coagulation are tightly interconnected in the pathophysiology of neuronal ***,a pro-coagulant serine protease is associated with neurodegeneration and its indirect inhibitor,activated protein C(aPC),is considered *** levels of thrombin and aPC activity are readily measured in the blood,similar assays in the cerebrospinal fluid(CSF)have not been *** aim of this study was to establish a specific and sensitive enzymatic assay to measure both thrombin and aPC activity in the *** was collected from 14 patients with suspected normal pressure hydrocephalus served as a control group,while seven patients with central nervous system infections served as an acute neuro-inflammatory study group and one sample of CSF following traumatic lumbar puncture served as a positive *** and aPC activities were measured by fluorescence released by specific proteolytic cleavage in the presence of endopeptidase and amino-peptidase inhibitors to ensure *** of the method was verified by thrombin and serine-protease inhibitors N-alpha-((2-naphthylsulfinyl)glycyl)-DL-p-amidinophenylalanylpiperidine and phenylmethanesulfonyl *** of thrombin activity by CSF samples and levels of specific thrombin inhibitors were also *** and aPC activities were reliably measured and were significantly higher in the CSF of patients with central nervous system infections compared to normal pressure hydrocephalus controls,suggesting the involvement of these factors in *** thrombin activity levels in the presence of known thrombin concentration were high in patients with central nervous system infections,and low in normal pressure hydrocephalus *** of endogenous thrombin inhibitors protease nexin 1,amyloid precursor protein and anti-thrombin III in CSF by western blot indicated a significant elevation of amyloid precursor protein in infectious *** concl

关键词： activated protein C cerebrospinal fluid infection inflammation normal pressure hydrocephalus thrombin

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Regional averaged controllability for hyperbolic parameter dependent systems

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Control Theory and Technology 2020年第3期18卷 307-314页

作者： Mouna ABDELLI Abdelhak HAFDALLAH faycal MERGHADI Meriem LOUAFI Laboratory of Mathematics Informatics and Systems(LAMIS) University of Larbi Tebessi12002 TebessaAlgeria

The purpose of this paper is to extend the notion of regional controllability for hyperbolic parameter dependent *** key idea is the characterization of the averaged regional control with minimal *** control steers the state average(with respect to such a parameter)towards the desired state only on a given part of the system evolution *** this paper,we give the precis definition and the properties of this new ***,we use an approach based on an extension of the Hilbert uniqueness method devoted to the calculation of the control in two different cases:zone control and pointwise control.

关键词： Parameter dependent system averaged regional controllability averaged control Hilbert uniqueness method minimum energy

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游四方赏玩方形腕表的无边魅力

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汽车生活 2007年第10期 82-87页

作者： fay

虽然表壳还有许多种可能,但由刚毅直线画出的方形腕表,恰好能将时间完好地涵盖承载,使时间化身一座座令人流连忘返的广场,当我们在时间之中游走,有了不同的缓急脚步,有了不同的高低角度,就可以发现又一个不同的面貌;当我们在广场之中游... 详细信息

虽然表壳还有许多种可能,但由刚毅直线画出的方形腕表,恰好能将时间完好地涵盖承载,使时间化身一座座令人流连忘返的广场,当我们在时间之中游走,有了不同的缓急脚步,有了不同的高低角度,就可以发现又一个不同的面貌;当我们在广场之中游走,就成了四方里的认真旅人,在旅途中遇见人生的每一种时刻,在时刻里遇见更多的人生。

关键词：蓝宝石表壳机芯不锈钢飞轮玫瑰金防水上链材质时间

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来过，你才知道该对马力如何敬畏意大利超跑文化之旅

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汽车杂志 2017年第5期 158-167页

作者： fay

意大利是有名的超跑之乡，在意大利中部的艾米利亚-罗马涅大区更是有着“汽车之谷（motorvalley）”的名声，在此齐聚的知名汽车品牌就有Ferrari、Lamborghini、Maserati、Pagani……等，此区域更是聚集了大大小小的汽车或超跑博物馆，... 详细信息

意大利是有名的超跑之乡，在意大利中部的艾米利亚-罗马涅大区更是有着“汽车之谷（motorvalley）”的名声，在此齐聚的知名汽车品牌就有Ferrari、Lamborghini、Maserati、Pagani……等，此区域更是聚集了大大小小的汽车或超跑博物馆，要想好好朝圣过一轮，势必得花上个把月。

关键词：意大利 Ferrari 马力文化汽车品牌博物馆

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硬朗且柔情

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车迷 2019年第3期 54-61页

作者： fay

他是热剧《欢乐颂》里对爱情专一的草根青年王柏川,是警匪网剧《卧底》里在金三角地区卧底的军校优秀学生大陆,也是最近三网热播剧《独孤皇后》中的高颎将军,荧幕里的张陆塑造的大多都是硬汉形象,但私底下编辑可以很负责地告诉你们,他...

他是热剧《欢乐颂》里对爱情专一的草根青年王柏川,是警匪网剧《卧底》里在金三角地区卧底的军校优秀学生大陆,也是最近三网热播剧《独孤皇后》中的高颎将军,荧幕里的张陆塑造的大多都是硬汉形象,但私底下编辑可以很负责地告诉你们,他真的温暖到爆炸!这次《车迷》的大片早早订下了这辆外观非凡,内饰奢华且高科技感的路虎全新揽胜星脉,更是有幸邀到这位硬朗却温暖的演员张陆,如此搭调的气质让这一期的内容格外养眼!

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苍茫雪山的生命之歌

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明日风尚 2016年第3期 162-169页

作者： fay

对于雪山的好感,全都来自这部电影《喜马拉雅》。来回西藏多次,见识了普遍为人们所赞赏的西藏美景,我一直固执地认为,唯独雪山,令人流连。六年前,第一次去西藏旅行时,在一家小店听到《Karma》这首歌,当即询问店主并买下这张唱片。"Karma... 详细信息

对于雪山的好感,全都来自这部电影《喜马拉雅》。来回西藏多次,见识了普遍为人们所赞赏的西藏美景,我一直固执地认为,唯独雪山,令人流连。六年前,第一次去西藏旅行时,在一家小店听到《Karma》这首歌,当即询问店主并买下这张唱片。"Karma"来自于古印度语"竭摩",在梵语中,有"因果业报"之意。后来才知道,"Karma"也是一个人名,他是电影《喜马拉雅》里那个反抗叛逆的年轻首领卡玛。第二次进藏,兜兜转转于小昭寺门前的店铺,竟然又遇见这首歌,只是这次,收获的是一张电影《喜马拉雅》的DVD。在昏暗狭窄的旅店里,借来老板的DVD放

关键词：埃里克生命之歌喜马拉雅山脉

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极色黑面表的理性感性十选

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汽车生活 2007年第9期 84-89页

作者： fay

果决、阳刚、强悍,这是黑色。细腻、沉稳、内敛,更是黑色。黑色是世界上最极端的色彩,充满了既霸气又持重的感性气度,亦藏有既纯粹又严谨的理性智慧。所谓的黑色很矛盾,它无需怀疑,却无可预测。当你觉得完全了解了它的沉默,下一秒又完... 详细信息

果决、阳刚、强悍,这是黑色。细腻、沉稳、内敛,更是黑色。黑色是世界上最极端的色彩,充满了既霸气又持重的感性气度,亦藏有既纯粹又严谨的理性智慧。所谓的黑色很矛盾,它无需怀疑,却无可预测。当你觉得完全了解了它的沉默,下一秒又完全懂不了它的喧哗;当你觉得可以自在漫步在它的浅滩,下一秒又踉跄跌进它深深的浪。这也难怪,黑色总是能够瞬间慑人,教人全心喜欢,却无需理由。

关键词：黑色蓝宝石面盘防水设计碳纤维机芯材质感性金属

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Intraspecific variation in precipitation responses of a widespread C_(4) grass depends on site water limitation

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Journal of Plant Ecology 2017年第2期10卷 310-321页

作者： Michael J.Aspinwall Philip A.fay Christine V.Hawkes David B.Lowry Albina Khasanova Jason Bonnette Briana K.Whitaker Nicholas Johnson Thomas E.Juenger Hawkesbury Institute for the Environment Western Sydney UniversityHawkesbury CampusLocked Bag 1797PenrithNew South Wales 2751Australia USDA-ARS Grassland Soil and Water Research Laboratory 808 East Blackland RdTempleTX 76502USA Department of Integrative Biology University of Texas at Austin1 University StationAustinTX 78712USA Department of Plant Biology Michigan State University612 Wilson RoadEast LansingMI 48824USA

Aims Variation in precipitation strongly influences plant growth,species distributions and genetic *** variation in pheno-typic plasticity,the ability of a genotype to alter its growth,morphol-ogy or physiology in response to the environment,could influence species responses to changing precipitation and climate *** this,the patterns and mechanisms of intraspecific varia-tion in plasticity to variable precipitation,and the degree to which genotype responses to precipitation are influenced by variation in edaphic conditions,remain poorly ***,we determined whether genotypes of a widespread C_(4) grass(Panicum virgatum L.,switchgrass)varied in aboveground productivity in response to changes in precipitation,and if site edaphic conditions modified genotype aboveground productivity responses to *** also determined if genotype productivity responses to precipitation are related to plasticity in underlying growth and phenological *** Nine *** genotypes originating from an aridity gradient were grown under four treatments spanning the 10th to the 90th percentiles of annual precipitation at two sites in central Texas:one site with deep,fine-textured soils and another site with shallow,coarse-textured *** measured volumetric soil water content(VWC),aboveground net primary productivity(ANPP),tiller pro-duction(tiller number),average tiller mass,canopy height,leaf area index(LAi)and flowering time on all plants at both sites and examined genotype responses to changes in *** Findings Across precipitation treatments,VWC was 39%lower and more variable at the site with shallow,coarse-textured soils compared to the site with deep,fine-textured *** averaged across genotypes and precipita-tion treatments was also 103%higher at the site with deep,fine-textured soils relative to the site with shallow,coarse-textured soils,indicating substantial differences in site water limitation.W

关键词： climate change Panicum virgatum phenology phenotypic plasticity precipitation

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