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电磁流体动力驱动流体搅拌混合器特性研究

实验流体力学 2006年第1期20卷 80-85页

作者：刘庆明 BATTON John aubry nadine 北京理工大学机电工程学院北京100081 新泽西理工学院机械工程系纽瓦克新泽西07102

对小型电磁流体动力搅拌混合器的特性进行了理论分析和实验研究。该小型电磁动力混合器由聚碳酸脂和黄铜采用常规机械加工方法加工而成。研究采用的流体为氯化钠水溶液。为了观察流体的搅拌混合运动,在流体中加入微量微细玻璃珠作为示... 详细信息

对小型电磁流体动力搅拌混合器的特性进行了理论分析和实验研究。该小型电磁动力混合器由聚碳酸脂和黄铜采用常规机械加工方法加工而成。研究采用的流体为氯化钠水溶液。为了观察流体的搅拌混合运动,在流体中加入微量微细玻璃珠作为示踪粒子。采用显微观测及图像采集技术记录流体的搅拌混合过程,用数字图像处理技术对流体速度场进行分析。建立了搅拌混合器的理论模型,并对其动力特性进行了数值分析,理论结果与实验结果相吻合。该小型电磁动力混合器已应用于微管道流动的混合控制并可应用于其它微流体控制系统中。

关键词：微流体芯片微流体控制显微测量流体动力特性流速测量搅拌器

基于小型电磁动力驱动器的微流道混合控制研究

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计算力学学报 2009年第1期26卷 102-108页

作者：刘庆明白春华 nadine aubry 北京理工大学机电工程学院北京100081 New Jersey Institute of Technology NewarkNJ 07102USA

对于许多微流体应用系统来说,流体的混合是至关重要的。本文研究了基于电磁流体动力混合器的微流道主动混合控制方法,建立了该微流道混合系统的理论模型并进行了数值模拟。在交变Lorentz驱动下,流经混合器流道的流体及其分界面在混合器... 详细信息

对于许多微流体应用系统来说,流体的混合是至关重要的。本文研究了基于电磁流体动力混合器的微流道主动混合控制方法,建立了该微流道混合系统的理论模型并进行了数值模拟。在交变Lorentz驱动下,流经混合器流道的流体及其分界面在混合器流道内往复运动,流体界面的反复折叠与流体局部流动使流体混合,流体的横向往复运动使流体分界面反复折叠从而使流体间的接触面积大大增加。对流体混合过程进行了讨论并给出了流体混合程度评价方法。

关键词：流体混合微管道流动微尺度混合流动控制

基于电磁流体动力搅拌器的微流道混合研究(英文)

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实验流体力学 2010年第1期24卷 6-14页

作者：刘庆明 John Batton nadine aubry 白春华北京理工大学爆炸科学与技术国家重点实验室北京100081 新泽西理工大学

对于许多微流体装置来说,流体的混合是至关重要的。为了实现微流体混合控制,对基于电磁流体动力学原理的微流道主动混合控制方法进行了研究。该方法中使用了一个混合室,在动态洛伦兹力的作用下,混合室内流体往复周期的运动。流体速度的... 详细信息

对于许多微流体装置来说,流体的混合是至关重要的。为了实现微流体混合控制,对基于电磁流体动力学原理的微流道主动混合控制方法进行了研究。该方法中使用了一个混合室,在动态洛伦兹力的作用下,混合室内流体往复周期的运动。流体速度的周期性变化使流体分界面折叠,从而使流体接触面增加。用CCD记录设备记录了流体的快速混合过程,并对流体的混合程度进行定量分析。

关键词：微流道流动混合控制电磁流体动力搅拌器

ON THE FORMATION OF THE BULGE IN A SPILLING BREAKING WATER WAVE

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Journal of Hydrodynamics 1997年第3期9卷 41-48页

作者： Wang, Zhongyuan nadine, aubry Jim, H.Duncan Nanjing Univ of Science and Technology Nanjing China

The early stages of a spilling breaking water wave leading to the formation of a bulge on the forward face of the wave are investigated. In this study, simultaneous space-time measurements of the free-surface elevation of a spilling breaking water wave are recorded and analyzed. The analysis, carried out in the frame of reference moving with the crest of the wave,reveals that the formation of the bulge is due to the presence of a shock-like mode. In the previous frame of reference, the shock itself is unsteady but its (spatial) location is time independent and coincides with the 'toe' of the bulge. As time increases, the shock undergoes a flip (a reflection symmetry) with respect to the midpoint of our time interval. Such a flip is responsible for an abrupt increase of the wave steepe-ness, which will lead to wave breaking at later times. Following these observations, we present a two-dimensional quantitative model which reproduces both the formation of the bulge and the sudden increase of the wave steepeness.

关键词： hydrodynamics,turbulence water wave,data analysis

Cas13d-mediated gene knockdown in CAR T cells:towards off-the-shelf cancer treatment

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Signal Transduction and Targeted Therapy 2024年第5期9卷 1796-1798页

作者： Midori Johnston nadine Urban Can Dincer FIT Freiburg Centre for Interactive Materials and Bioinspired Technology University of FreiburgFreiburgGermany IMTEK-Department of Microsystems Engineering University of FreiburgFreiburgGermany

In a recent study published in Cell,Tieu et *** RfxCas13d to dynamically enhance performance and longevity of chimeric antigen receptor(CAR)T cells by massively multiplexed gene knockdown and thereby,move the treatmen... 详细信息

关键词： treatment shelf

Effect of hydration on the surface basicity and catalytic activity of Mg-rare earth mixed oxides for aldol condensation

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Journal of Rare Earths 2018年第4期36卷 359-366页

作者： Zheng Wang Pascal Fongarland Guanzhong Lu Wangcheng Zhan nadine Essayem Key Laboratory for Advanced Materials and REsearch Institute of Industrial Catalysis School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Institut de REcherches sur la Catalyse et l'Environnement de Lyon(IRCELYON) CNRS-Universite Lyon 12 Avenue Albert Einstein69626 Villeurbanne CedexFrance

Magnesium and rare earth mixed oxides（Mg3 REOx（RE=La, Y. Ce）） were prepared and characterized by Xray diffraction（XRD）, N_2 adsorption-desorption, infrared spectra and microcalorimetry of CO_2. The results reveal that the Mg_3 CeO_x catalyst is present in the form of Mg-Ce-O solid solution,while the Mg3 LaOx and Mg_3 YO_x catalysts are probably rare earth oxides dispersed on MgO surface. As a result, among the calcined Mg_3 REO_x catalysts, the Mg_3 CeO_x catalyst presents the highest rate constant for acetone aldolization, which is well correlated to its more homogeneous distribution of basic sites. In contrary, the Mg_3 YO_x catalyst exhibit the lowest catalytic activity for acetone aldolization. Upon hydration pre-treatment, the basic properties on the surface of the Mg_3 REO_x catalysts were changed markedly. The Mg_3 YO_x catalyst after hydration treatment shows the highest amount of basic sites on catalyst surface, and then exhibits the highest activity among the hydrated Mg_3 REO_x catalysts. These results make it possible to fine-tune basic sites for acetone aldolization.

关键词： Mg-rare earth mixed oxide Hydration treatment Water tolerance Aldol condensation Solid base catalyst Rare earths

COMPARISON OF TWO METHODS OF OPERATING THEATRE PLANNING:APPLICATION IN BELGIAN HOSPITAL

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Journal of Systems Science and Systems Engineering 2008年第2期17卷 171-186页

作者： Sondes CHAABANE nadine MESKENS Alain GUINET Marius LAURENT LAMIH laboratory Valenciennes University59313 Valenciennes Cedex 09France MAAD Laboratory FUCAM7000 MonsBelgium LIESP Laboratory INSA-Lyon69621 France CHU de TIVOLI 7100 La LouvièreBelgium

Operating Theatre is the centre of the hospital management＇s efforts. It constitutes the most expensive sector with more than 10% of the intended operating budget of the hospital. To reduce the costs while maintaining a good quality of care, one of the solutions is to improve the existent planning and scheduling methods by improving the services and surgical specialty coordination or finding the best estimation of surgical case durations. The other solution is to construct an effective surgical case plan and schedule. The operating theatre planning and scheduling is the two important steps, which aim to make a surgical case programming with an objective of obtaining a realizable and efficient surgical case schedule. This paper focuses on the first step, the operating theatre planning problem. Two planning methods are introduced and compared. Real data of a Belgian university hospital ＂Tivoli＂ are used for the experiments.

关键词： Open scheduling block scheduling operating theatre planning master surgical schedule

In situ Raman imaging of high-temperature solid-state reactions in the CaSO4-SiO2 system

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International Journal of Coal Science & Technology 2019年第2期6卷 247-259页

作者： nadine Bohme Kerstin Hauke Manuela Neuroth Thorsten Geisler Institut fiir Geowissenschaften und Meteorologie Universitat Bonn Poppelsdorfer Schloss Meckenheimer Allee 169 53115 Bonn Germany RWE Power AG F und E Kraftwerk NiederauBem Bergheim Germany

The deposition of mineral phases on the heat transfer surfaces of brown coal power plants may have a negative effect on power plant boilers. The paragenesis of these deposits contains information about the actual temperature prevailed during the combustion of lignite, if the temperature-dependences of distinct mineral transformations or reactions are known. Here, we report results of a sintering study (to ?1100℃) with samples containing anhydrite, quartz, and gehlenite, which are typical components of Rhenish lignite ashes. Thermal decompositions and solid-state reactions were analyzed (1) in situ and (2) both in situ and after quenching using confocal hyperspectral Raman imaging. This novel application of confocal Raman spectroscopy provides temperature-and time-resolved, 2-dimensional information about sintering processes with a micrometer-scale resolution. In the course of the sintering experiments with anhydrite and quartz with a weight ratio of 2:1 both polymorphs wollastonite and pseudowollastonite were identified in situ at about 920 and 1000℃, respectively. The formation of pseudowollastonite was thus observed about 120℃ below the phase transition temperature, demonstrating that it can form metastably. In addition,α′L-Ca2SiO4 was identified at about 1100℃. In samples containing equal weight fractions of anhydrite and quartz that were quenched after firing for 9h at about 1100℃,β-Ca2SiO4 (larnite) crystallized as rims around anhydrite grains and in direct contact to wollastonite. We furthermore observed that, depending on the ratio between quartz and anhydrite, wollastonite replaced quartz grains between 920 and 1100℃., i.e., the higher the quartz content, the lower the formation temperature of wollastonite.

关键词： Ash deposition Calcium silicate Calcium sulfate High-temperature Raman imaging

Advanced pancreatic ductal adenocarcinoma-Complexities of treatment and emerging therapeutic options

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World Journal of Gastroenterology 2017年第13期23卷 2276-2285页

作者： Chandra Diwakarla Katherine Hannan nadine Hein Desmond Yip Department of Medical Oncology The Canberra Hospital The John Curtin School of Medical Research Australian National University ANU Medical School Australian National University

Pancreatic ductal adenocarcinoma is a devastating disease with a poor prognosis regardless of stage. To date the mainstay of therapy for advanced disease has been chemotherapy with little incremental im-provements in outcome. Despite extensive research investigating new treatment options the current practices continue to utilise fluorouracil or gemcitabine containing combinations. The need for novel the-rapeutic approaches is mandated by the ongoing poor survival rates associated with this disease. One such approach may include manipulation of ribosome biogenesis and the nucleolar stress response, which has recently been applied to haematological malignancies such as lymphoma and prostate cancer with promising results. This review will focus on the current therapeutic options for pancreatic ductal adenocarcinoma and the complexities associated with developing novel treatments, with a particular emphasis on the role of the nucleolus as a treatment strategy.

关键词： Ribosome biogenesis Nucleolar stress RNA polymerase I Pancreatic ductal adenocarcinoma Chemotherapy