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16篇 您的检索式:作者名="Nakisa"
    题名 作者 年代 出处 被引量
1Oxidative coupling of methane in a fixed bed reactor over perovskite catalyst:A simulation study using experimental kinetic model显示文摘在 perovskite 泰坦上的到乙烯的甲烷(OCM ) 的氧化联合在一个固定的床反应堆吃了催化剂试验性地并且数字地被学习。二维的稳定的州的模型说明了分开的精力方程因为煤气、稳固的阶段结合了一个试验性的运动模型。lumped 包含四主要种类 CH 4, O 2, 公司 x ( 公司 2, 公司) ,和 C 2(C 2 H 4 和 C 2 H 6) 也与一个塞子流动反应堆模型一起被使用。从模型的结果同意了试验性的数据。模型被用来分析温度的影响并且在反应堆表演的变换和选择上喂煤气的作文。分析结果显示变换减少,而,由时时增加气体的 C 2 选择增加空间速度(GHSV ) 和甲烷变换也由增加甲烷到氧减少比率。Nakisa Yaghobi Mir Hamid Reza Ghoreishy 2008Journal of Natural Gas Chemistry2008,17,1:8
2Modeling the oxidative coupling of methane: Heterogeneous chemistry coupled with 3D flow field simulation显示文摘The oxidative coupling of methane (OCM) over titanate perovskite catalyst has been developed by three-dimensional numerical simulations of flow field coupled with heat transfer as well as heterogeneous kinetic model. The reaction was assumed to take place both in the gas phase and on the catalytic surface. Kinetic rate constants were experimentally obtained using a ten step kinetic model. The simulation results agree quite well with the data of OCM experiments, which were used to investigate the effect of temperature on the selectivity and conversion obtained in the methane oxidative coupling process. The conversion of methane linearly increased with temperature and the selectivity of C2 was practically constant in the temperature range of 973–1073 K. The study shows that CFD tools make it possible to implement the heterogeneous kinetic model even for high exothermic reaction such as OCM.Yaghobi Nakisa Ghoreishy Mir Hamid Reza 2009Journal of Natural Gas Chemistry2009,18,1:4
3面向驾驶员的个性化健康导航显示文摘为了减少因驾驶员的生理和心理健康状况变化引发的交通事故,实现对驾驶员健康状态的自动监测和实时优化,提出以控制论的基本理论为基础的驾驶员健康状态闭环反馈系统框架.首先基于驾驶员日志建立个性化健康模型;然后结合各种传感器实时采集的驾驶员、车辆和道路环境等多模态数据,对驾驶员当前健康状态进行估计;最后针对预设健康目标,为驾驶员提供可执行的行为建议,实现对驾驶员健康状态的导航优化.在最关键的实时监测环节,提出基于注意力的卷积神经网络(convolutional neural network,CNN)-长短期记忆网络(long short term memory,LSTM)的多模态融合模型,实现对驾驶员压力、情绪和疲劳3个方面的健康状态估计.在私有数据集和公开数据集上分别开展的实验验证均获得高于90%的检测准确率.实验结果表明,提出的模型和方法可以实时准确监测驾驶员的压力、情绪和疲劳状态,为实现驾驶员的个性化健康导航系统提供有力支撑.牟伦田 周朝 赵艺远 赵鹏飞 Bahareh Nakisa Ramesh Jain 尹宝才 2021北京工业大学学报2021,47,5:2
4Differential sensitivities of mammalian neuronal and muscle nicotinic aeetylcholine receptors to general anesthetics显示文摘Violet JM Downie DL Nakisa RC 1997Anesthesiology1997,86,4:1
5Differential sensitivities of mammalian neuronal and muscle nicotinic acetylcholine receptors to general anesthetics 显示文摘Violet JM Downie DL Nakisa RC 1997Anesthesiology1997,86,4:1
6Differential sensitivities of mammalian neuronal and muscle nicotinic acetylcholine receptors to general anesthetics显示文摘Violet JM Downie DL Nakisa RC 0,,:1
7German inflection: single route or dual route? 显示文摘Hahn U & Nakisa RC 2000Cognitive Psychology2000,41,4:1
8Differential sensitivities of mammalian neuronal and muscle nicotinic acetylcholine receptors to general anesthetics 显示文摘Violet JM Dowmie DL Nakisa RC 1997Anesthesiology1997,86,4:1
9Potential effects of Trachyspermum copticum essential oil and propolis alcoholic extract on Mep3 gene expression of Microsporum canis isolates显示文摘Ali Reza Khosravi Hojjatollah Shokri Nakisa Sohrabi 2014Journal de Mycologie Médicale2014,,:1
10Differential sensitivities of mammalian neuronal and muscle nicotinic acety]choline recep- tors to general anesthetics 显示文摘Violet JM Dowmie DL Nakisa RC 1997Anesthes/o/offy1997,86,4:1
11Differential sensitivities of mammalian neuronal and muscle nicotinic acetylcholine receptors to general anesthetics 显示文摘Violet JM Downie DL Nakisa RC 1997Anesthesiology1997,86,4:1
12CFD modeling of reaction and mass transfer through a single pellet: Catalytic oxidative coupling of methane显示文摘In this study a mathematical model of a small scale single pellet for the oxidative coupling of methane(OCM)over titanite pervoskite is developed.The method is based on a computational fluid dynamics(CFD)code which known as Fluent may be adopted to model the reactions that take place inside the porous catalyst pellet.The steady state single pellet model is coupled with a kinetic model and the intra-pellet concentration profiles of species are provided.Subsequent to achieving this goal,a nonlinear reaction network consisting of nine catalytic reactions and one gas phase reaction as an external program is successfully implemented to CFD-code as a reaction term in solving the equations.This study is based on the experimental design which is conducted in a differential reactor with a Sn/BaTiO3 catalyst(7-8 mesh) at atmospheric pressure,GHSV of 12000 h-1,ratio of methane to oxygen of 2,and three different temperatures of 1023,1048 and 1073 K.The modeling results such as selectivity and conversion at the pellet exit are in good agreement with the experimental data.Therefore,it is suggested that to achieve high yield in OCM process the modeling of the single pellet should be considered as the heart of catalytic fixed bed reactor.Siavash Seyednejadian Nakisa Yaghobi Ramin Maghrebi Leila Vafajoo 2011Journal of Natural Gas Chemistry2011,20,4:1
13Differential sensitivities of mammalian neuronal and muscle nicotinic acetylcholine receptors to general anesthetics显示文摘 Downie DL Nakisa RC 1997Anesthesiology1997,86,4:1
14CFD modeling of catalyst pellet for oxidative coupling of methane:Heat transfer and reaction显示文摘This study deals with the phenomena occuring at single-pellet catalyst scale for the oxidative coupling of methane where heat transfer plays an important role.Computational fluid dynamics(CFD) is used for obtaining detailed rate and temperature profiles through the porous catalytic pellet where reaction and diffusion compete.Intra-particle temperature and concentration gradients were taken into account by solving heat transfer coupled with continuity equations in the catalyst pellet.In heat transfer,the energy term due to highly exothermic reaction was considered.Two external programs were successfully implemented into the CFD-code as kinetic and heat of reaction terms.Simulation results showed that reaction was favored at the beginning for the pellet,followed by diffusion predomination.The results of CFD simulation indicate that temperature variation within the catalyst pellet is <2K due to exothermic oxidation.The results showed further that exothermic oxidation reactions occurred prior to endothermic coupling reaction in the pellet.Ramin Maghrebi Nakisa Yaghobi Siavash Seyednejadian Mitra H.Tabatabaei 2013Particuology2013,11,5:1
15大鼠内细胞团和胎儿神经干细胞构建嵌合体的潜力(英文)显示文摘嵌合体大鼠是研究人类疾病的重要动物模型。用囊胚注射法研究了大鼠内细胞团(ICM)和胎儿神经干细胞(FNS)构建嵌合体的潜力。结果发现来自黑色(DA)大鼠第5天(D5)和第6天(D6)囊胚的ICM细胞注入D5 Sprague-Dawley(SD)大鼠囊胚后得到3只嵌合体大鼠;D5SD大鼠ICM细胞注射入D5DA囊胚后得到4只嵌合体大鼠;而体外培养的DA或SD大鼠ICM细胞注射后均未能获得嵌合体大鼠。本研究用大鼠胎儿神经干细胞(rFNS)和LacZ转染的rFNS构建嵌合体,未能获得嵌合体大鼠;但在LacZ转染的SDrFNS注射到DA大鼠囊胚后发育来的41只胎儿中,有2只胎儿其组织切片中发现少量LacZ阳性细胞。结果表明DA和SD大鼠ICM具有参与嵌合体发育的潜力,但ICM细胞经体外培养后构建嵌合体的潜力显著下降(P<0.05);大鼠胎儿神经干细胞构建嵌合体的潜力较低,可能仅具有参与早期胚胎发育的潜力。郭继彤 李雪峰 Shahnaz Fida 苟克勉 Nakisa Malakooti ZHANG Chun-fang John R Morrison Alan O Trounson DU Zhong-tao 2009Zoological Research2009,30,2:0
16对二甲苯分离中单价碱金属离子对无粘合剂纳米沸石X的影响(英文)显示文摘The adsorption process was studied for separating para-xylene from xylene mixture on modified nano-zeolite X in a breakthrough system. Nano-zeolitic adsorbent with different ratios of Si O2/Al2O3 was synthesized through hydrothermal process and ion-exchanged with alkaline metal cations like lithium, sodium and potassium. The product was characterized by X-ray diffraction, scanning electron microscopy(SEM), nitrogen adsorption,transform electron microscopy(TEM) and in situ Fourier transform infrared(FTIR) spectroscopy. The influence of nano-zeolite water content and desorbent type on the selectivity of para-xylene toward other C8 aromatic isomers was studied. The optimization of adsorption process was also investigated under variable operation conditions. The isotherm for each isomer of C8 aromatics and the desorbents possess the adsorption characteristics of Langmuir type. The selectivity factor of para-xylene relative to each of meta-xylene, ortho-xylene and ethylbenzene under the optimum conditions obtained to be 5.36, 2.43 and 3.22, in the order given.Milad Rasouli Nakisa Yaghobi Seyedeh Zahra Movassaghi Gilani Hossein Atashi Majid Rasouli 2015Chinese Journal of Chemical Engineering2015,23,1:0
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