Relevant bibliographies by topics / Aggregation of convection

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Aggregation of convection'

Author: Grafiati
Published: 25 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Aggregation of convection"

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Shamekh, Sara, Caroline Muller, Jean-Philippe Duvel, and Fabio D’Andrea. "How Do Ocean Warm Anomalies Favor the Aggregation of Deep Convective Clouds?" Journal of the Atmospheric Sciences 77, no. 11 (2020): 3733–45. http://dx.doi.org/10.1175/jas-d-18-0369.1.

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AbstractWe investigate the role of a warm sea surface temperature (SST) anomaly (hot spot of typically 3 to 5 K) on the aggregation of convection using cloud-resolving simulations in a nonrotating framework. It is well known that SST gradients can spatially organize convection. Even with uniform SST, the spontaneous self-aggregation of convection is possible above a critical SST (here 295 K), arising mainly from radiative feedbacks. We investigate how a circular hot spot helps organize convection, and how self-aggregation feedbacks modulate this organization. The hot spot significantly acceler
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Jung, Hyunju, Ann Kristin Naumann, and Bjorn Stevens. "Convective self–aggregation in a mean flow." Atmospheric Chemistry and Physics 21, no. 13 (2021): 10337–45. http://dx.doi.org/10.5194/acp-21-10337-2021.

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Abstract. Convective self-aggregation is an atmospheric phenomenon seen in numerical simulations in a radiative convective equilibrium framework thought to be informative of some aspects of the behavior of real-world convection in the deep tropics. We impose a background mean wind flow on convection-permitting simulations through the surface flux calculation in an effort to understand how the asymmetry imposed by a mean wind influences the propagation of aggregated structures in convection. The simulations show that, with imposing mean flow, the organized convective system propagates in the di
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Bretherton, Christopher S., Peter N. Blossey, and Marat Khairoutdinov. "An Energy-Balance Analysis of Deep Convective Self-Aggregation above Uniform SST." Journal of the Atmospheric Sciences 62, no. 12 (2005): 4273–92. http://dx.doi.org/10.1175/jas3614.1.

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Abstract The spatial organization of deep moist convection in radiative–convective equilibrium over a constant sea surface temperature is studied. A 100-day simulation is performed with a three-dimensional cloud-resolving model over a (576 km)2 domain with no ambient rotation and no mean wind. The convection self-aggregates within 10 days into quasi-stationary mesoscale patches of dry, subsiding and moist, rainy air columns. The patches ultimately merge into a single intensely convecting moist patch surrounded by a broad region of very dry subsiding air. The self-aggregation is analyzed as an
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Tobin, Isabelle, Sandrine Bony, and Remy Roca. "Observational Evidence for Relationships between the Degree of Aggregation of Deep Convection, Water Vapor, Surface Fluxes, and Radiation." Journal of Climate 25, no. 20 (2012): 6885–904. http://dx.doi.org/10.1175/jcli-d-11-00258.1.

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Abstract Tropical deep convection exhibits complex organization over a wide range of scales. This study investigates the relationships between the spatial organization of deep convection and the large-scale atmospheric state. By using several satellite datasets and reanalyses, and by defining a simple diagnostic of convective aggregation, relationships between the degree of convective aggregation and the amount of water vapor, turbulent surface fluxes, and radiation are highlighted above tropical oceans. When deep convection is more aggregated, the middle and upper troposphere are drier in the
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Schulz, Hauke, and Bjorn Stevens. "Observing the Tropical Atmosphere in Moisture Space." Journal of the Atmospheric Sciences 75, no. 10 (2018): 3313–30. http://dx.doi.org/10.1175/jas-d-17-0375.1.

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Measurements from the Barbados Cloud Observatory are analyzed to identify the processes influencing the distribution of moist static energy and the large-scale organization of tropical convection. Five years of water vapor and cloud profiles from a Raman lidar and cloud radar are composed to construct the structure of the observed atmosphere in moisture space. The large-scale structure of the atmosphere is similar to that now familiar from idealized studies of convective self-aggregation, with shallow clouds prevailing over a moist marine layer in regions of low-rank humidity, and deep convect
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Warren, P. B., R. C. Ball, and A. Boelle. "Convection-Limited Aggregation." Europhysics Letters (EPL) 29, no. 4 (1995): 339–44. http://dx.doi.org/10.1209/0295-5075/29/4/012.

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Li, Bo-Wei, Min-Cheng Zhong, and Feng Ji. "Laser Induced Aggregation of Light Absorbing Particles by Marangoni Convection." Applied Sciences 10, no. 21 (2020): 7795. http://dx.doi.org/10.3390/app10217795.

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Laser induced Marangoni convection can be used to accumulate micro-particles. In this paper, a method is developed to control and accumulate the light absorbing particles dispersed in a thin solution layer. The particles are irradiated by a focused laser beam. Due to the photothermal effect of the particles, the laser heating generates a thermal gradient and induces a convective flow around the laser’s heating center. The convective flow drives the particles to accumulate and form a particle aggregate close to the laser’s heating center. The motion of particles is dominated by the Marangoni co
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Muller, Caroline J., and Isaac M. Held. "Detailed Investigation of the Self-Aggregation of Convection in Cloud-Resolving Simulations." Journal of the Atmospheric Sciences 69, no. 8 (2012): 2551–65. http://dx.doi.org/10.1175/jas-d-11-0257.1.

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Abstract In models of radiative–convective equilibrium it is known that convection can spontaneously aggregate into one single localized moist region if the domain is large enough. The large changes in the mean climate state and radiative fluxes accompanying this self-aggregation raise questions as to what simulations at lower resolutions with parameterized convection, in similar homogeneous geometries, should be expected to produce to be considered successful in mimicking a cloud-resolving model. The authors investigate this self-aggregation in a nonrotating, three-dimensional cloud-resolving
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Windmiller, Julia M., and George C. Craig. "Universality in the Spatial Evolution of Self-Aggregation of Tropical Convection." Journal of the Atmospheric Sciences 76, no. 6 (2019): 1677–96. http://dx.doi.org/10.1175/jas-d-18-0129.1.

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Abstract Self-aggregation in numerical simulations of tropical convection is described by an upscale growth and intensification of dry and moist regions. Previous work has focused on determining the relevant mechanism that induces moist regions to get moister and dry regions to get drier. Though different mechanisms have been identified, the spatial evolution of self-aggregation is remarkably universal. The first part of this study shows that different mechanisms can lead to a similar evolution of self-aggregation, if self-aggregation is described by a phase separation of moist and dry regions
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Boos, William R., Alexey Fedorov, and Les Muir. "Convective Self-Aggregation and Tropical Cyclogenesis under the Hypohydrostatic Rescaling." Journal of the Atmospheric Sciences 73, no. 2 (2016): 525–44. http://dx.doi.org/10.1175/jas-d-15-0049.1.

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Abstract The behavior of rotating and nonrotating aggregated convection is examined at various horizontal resolutions using the hypohydrostatic, or reduced acceleration in the vertical (RAVE), rescaling. This modification of the equations of motion reduces the scale separation between convective- and larger-scale motions, enabling the simultaneous and explicit representation of both types of flow in a single model without convective parameterization. Without the RAVE rescaling, a dry bias develops when simulations of nonrotating radiative–convective equilibrium are integrated at coarse resolut
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Dissertations / Theses on the topic "Aggregation of convection"

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Shamekh, Sara. "The impact of sea surface temperature on the aggregation of deep convective clouds." Electronic Thesis or Diss., Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLE041.

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Cette thèse examine l’impact des hétérogénéités de température de surface de la mer (SST) sur l’agrégation des nuages convectifs, à l’aide de simulations 3D de l’équilibre radiatifconvectif. Les hétérogénéités de température étudiées sont soit imposées, soit interactives. Dans le premier cas, un point chaud de rayon R et d’anomalie de température ΔT est introduit à la surface. Le point chaud accélère l’agrégation et étend les valeurs de SST pour lesquelles la convection agrège. L’augmentation de l’instabilité sur le point chaud renforce la convection et la circulation grande échelle, forçant l
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Wing, Allison A. "Physical mechanisms controlling self-aggregation of convection in idealized numerical modeling simulations." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90606.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2014.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 141-146).<br>The ubiquity of cloud clusters and their role in modulating radiative cooling and the moisture distribution underlines the importance of understanding how and why tropical convection organizes. In this work, the f
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Su, Hui. "A modeling study of self-aggregation and large-scale control of tropical deep convection /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/10018.

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Coppin, David. "Agrégation de la convection dans un modèle de circulation générale : mécanismes physiques et rôle climatique." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066057/document.

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Cette thèse porte sur l'agrégation de la convection dans le modèle de circulation générale LMDZ5A à l'équilibre radiatif-convectif (RCE). L'instabilité du RCE mise en évidence nous permet d'étudier les mécanismes d'initiation de l'agrégation et leur dépendance à la température de surface océanique (SST). A basse SST, l'agrégation résulte d'un couplage entre la circulation grande-échelle et les effets radiatifs des nuages bas. A haute SST, elle provient d'un couplage entre la circulation de grande-échelle et les flux turbulents à la surface. Le couplage de l'atmosphère avec une couche de mélang
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Coppin, David. "Agrégation de la convection dans un modèle de circulation générale : mécanismes physiques et rôle climatique." Electronic Thesis or Diss., Paris 6, 2017. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2017PA066057.pdf.

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Cette thèse porte sur l'agrégation de la convection dans le modèle de circulation générale LMDZ5A à l'équilibre radiatif-convectif (RCE). L'instabilité du RCE mise en évidence nous permet d'étudier les mécanismes d'initiation de l'agrégation et leur dépendance à la température de surface océanique (SST). A basse SST, l'agrégation résulte d'un couplage entre la circulation grande-échelle et les effets radiatifs des nuages bas. A haute SST, elle provient d'un couplage entre la circulation de grande-échelle et les flux turbulents à la surface. Le couplage de l'atmosphère avec une couche de mélang
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Wu, Wei-Lin, and 吳蔚琳. "The Characteristics of Convective Aggregation in Rotating Radiative-Convective Equilibrium Simulated by a Cloud-Resolving Model." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ghfzzw.

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Book chapters on the topic "Aggregation of convection"

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Jensen, Mogens H. "Muitifractals in Convection and Aggregation." In Random Fluctuations and Pattern Growth: Experiments and Models. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2653-0_41.

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Saito, Yukio, Makio Uwaha, and Susumu Seki. "Dynamics and Structure of an Aggregation Growing from a Diffusion Field." In Interactive Dynamics of Convection and Solidification. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2809-4_5.

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Xu, Liu-Jun, and Ji-Ping Huang. "Theory for Thermal Wave Nonreciprocity: Angular Momentum Bias." In Transformation Thermotics and Extended Theories. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5908-0_20.

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AbstractIn this chapter, we demonstrate that an angular momentum bias generated by a volume force can also lead to modal splitting in convection-diffusion systems but with different features. We further reveal the thermal Zeeman effect by studying the temperature field propagation in an angular-momentum-biased ring with three ports (one for input and two for output). With an optimal volume force, temperature field propagation is allowed at one output port but isolated at the other, and the rectification coefficient can reach a maximum value of 1. The volume forces corresponding to the rectific
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Khelifi, Sana, Namane Méchitoua, Frank Hülsemann, and Frédéric Magoulès. "An Aggregation Based Algebraic Multigrid Method Applied to Convection-Diffusion Operators." In Finite Volumes for Complex Applications VI Problems & Perspectives. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20671-9_63.

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Yuan, Leqi, Kun Cheng, Haozhi Bian, Yaping Liao, and Chenxi Jiang. "Numerical Simulation of Flow Boiling Heat Transfer in Helical Tubes Under Marine Conditions." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_86.

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AbstractLead-based cooled reactors in most countries and some small reactors at sea use helical tube steam generators. Compared with U-tubes, the convection heat transfer coefficient in the spiral tube is higher, the structure is more compact, and the secondary flow is generated under the action of centrifugal force and gravity, which can achieve the effect of wetting the inner wall of the tube. However, due to the importance of the steam generator in the reactor and the complexity of the flow and boiling in the helical tube, the aggregation behavior of bubbles, the distribution of the two-pha
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Holloway, Christopher E., Allison A. Wing, Sandrine Bony, et al. "Observing Convective Aggregation." In Space Sciences Series of ISSI. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-77273-8_2.

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Leibovich, Sidney. "Spatial Aggregation Arising from Convective Processes." In Lecture Notes in Biomathematics. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-50155-5_9.

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Wing, Allison A., Kerry Emanuel, Christopher E. Holloway, and Caroline Muller. "Convective Self-Aggregation in Numerical Simulations: A Review." In Space Sciences Series of ISSI. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-77273-8_1.

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Smith, Alan D. "B″ not D″ as the source of intraplate volcanism." In In the Footsteps of Warren B. Hamilton: New Ideas in Earth Science. Geological Society of America, 2022. http://dx.doi.org/10.1130/2021.2553(29).

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ABSTRACT Under fast-moving oceanic plates, the asthenosphere seismic B″ region becomes isolated from the convecting mantle by plate drag and acts as an advecting layer, which can serve as a long-lived source for intraplate volcanism. Geochemical enrichment of B″ can occur via infiltration by melts generated from the breakdown of serpentinite at ~200 km depth in subducting slabs. Ocean-island chains arise when melts generated within metasomatized B″ by shear melting and localized convection are released along lithospheric fractures controlled by the stress field of the plate. Intersection of me
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Pérez-Ramirez, Yolanda, Anthony Graziani, Paul-Antoine Santoni, Virginie Tihay-Felicelli, and William Mell. "Numerical characterization of structures heat exposure at WUI." In Advances in Forest Fire Research 2022. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_110.

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In the forthcoming years, self-protection of communities will be a first priority over fire suppression in order to tend to more fire-resistant and resilient WUI communities. All around the world, countries facing WUI fires apply different recommendations or regulations often issued from post-fire surveys. Still, more efforts are necessary to understand how and why dwellings are damaged or completely destroyed under WUI fires attack. In particular, there is a need to quantitatively assess the effectiveness of the current legal prescriptions for homeowners concerning the defensible space around
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Conference papers on the topic "Aggregation of convection"

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Mateen, Khalid, and Eric William Smith. "Asphaltene Deposition Simulator with Aggregation." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32421-ms.

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Abstract Asphaltene stability, aggregation, and transport are coupled with hydraulic and heat transfer equations to predict the effects of asphaltene deposition in wellbores and pipelines. The model uses lab measurements to characterize the asphaltene in solution and develop a precipitation curve in a pre-processing step. Smoluchowski coagulation theory predicts the rate of aggregation of smaller particles into larger particles in a geometric distribution. Finally, the resulting concentration of asphaltene particles diffuses to the wall as determined by mass convection theory. An innovative ap
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Carlton, Hayden, Preethi Korangath, Nageshwar Arepally, Anilchandra Attaluri, and Robert Ivkov. "Monitoring Perfusion-Based Convection in Cancer Tumor Tissue Undergoing Nanoparticle Heating by Analyzing Temperature Responses to Transient Pulsed Heating." In ASME 2023 Heat Transfer Summer Conference collocated with the ASME 2023 17th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/ht2023-105470.

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Abstract The dynamic nature of perfusion in living tissues, such as solid tumors during thermal therapy, produces challenging spatiotemporal thermal boundary conditions. Changes in perfusion can manifest as changes in convective heat transfer that influence temperature changes during cyclic heating. Herein, we propose a method to actively monitor changes in local convection (perfusion) in vivo by using a transient thermal pulsing analysis. Syngeneic 4T1 tumor cells were injected subcutaneously into BALB/c mice and followed by caliper measurements. When tumor volumes measured 150–400 mm3, mice
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Fiechter, Jerome, and David N. Ku. "Numerical Study of Platelet Transport in Flowing Blood." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0006.

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Abstract Platelet transport in flowing blood is a critical issue in the prediction of thrombus formation. Since available data on platelet aggregation are essentially from experiments, the goal of this work is to investigate numerical solutions for platelet transport and predict the relative influence of convection and diffusion on platelet deposition at the arterial wall. The results obtained for laminar flow in an aneurysm show that both species transport and discrete phase models predict accurately the effects of convective and diffusive mechanisms and match experimental data closely. The s
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Kim, Kyung Chun, and Dong Kim. "Numerical Simulation on the Formation of a Toroidal Microvortex by the Optoelectrokinetic Effect." In ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icnmm2014-21439.

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Optoelectrokinetic effects were effectively used for rapid concentration of particles in microfluidics. In this study, we clarified detail mechanism of particle aggregation by numerical simulation using COMSOL v4.2a multiphysics software. A 3D simulation was conducted with axisymmetric boundary conditions. AC voltage was applied to the two parallel electrodes in a microchannel to generate temperature gradient in the fluids. In addition to the AC electrothermal (ACET) effect, local heating by a laser illumination was also considered. Numerical simulations were carried out for dielectric fluids.
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Zhang, Peng, Jawaad Sheriff, João S. Soares, et al. "Multiscale Modeling of Flow Induced Thrombogenicity Using Dissipative Particle Dynamics and Coarse Grained Molecular Dynamics." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14187.

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The coagulation cascade of blood may be initiated by flow induced platelet activation, which prompts clot formation in prosthetic cardiovascular devices and arterial disease processes. While platelet activation may be induced by biochemical agonists, shear stresses arising from pathological flow patterns enhance the propensity of platelets to activate and initiate the intrinsic pathway of coagulation, leading to thrombosis. Upon activation platelets undergo complex biochemical and morphological changes: organelles are centralized, membrane glycoproteins undergo conformational changes, and adhe
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Bluestein, Danny, João S. Soares, Peng Zhang, et al. "Multiscale Modeling of Flow Induced Thrombogenicity Using Dissipative Particle Dynamics and Molecular Dynamics." In ASME 2013 2nd Global Congress on NanoEngineering for Medicine and Biology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/nemb2013-93094.

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The coagulation cascade of blood may be initiated by flow induced platelet activation, which prompts clot formation in prosthetic cardiovascular devices and arterial disease processes. While platelet activation may be induced by biochemical agonists, shear stresses arising from pathological flow patterns enhance the propensity of platelets to activate and initiate the intrinsic pathway of coagulation, leading to thrombosis. Upon activation platelets undergo complex biochemical and morphological changes: organelles are centralized, membrane glycoproteins undergo conformational changes, and adhe
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Bluestein, Danny, João S. Soares, Peng Zhang, et al. "Multiscale Modeling of Flow Induced Thrombogenicity With Dissipative Particle Dynamics (DPD) and Molecular Dynamics (MD)." In ASME 2013 Conference on Frontiers in Medical Devices: Applications of Computer Modeling and Simulation. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fmd2013-16176.

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The coagulation cascade of blood may be initiated by flow induced platelet activation, which prompts clot formation in prosthetic cardiovascular devices and arterial disease processes. While platelet activation may be induced by biochemical agonists, shear stresses arising from pathological flow patterns enhance the propensity of platelets to activate and initiate the intrinsic pathway of coagulation, leading to thrombosis. Upon activation platelets undergo complex biochemical and morphological changes: organelles are centralized, membrane glycoproteins undergo conformational changes, and adhe
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Han, Zenghu, and Bao Yang. "Natural Convective Heat Transfer of Water-in-FC72 Nanoemulsion Fluids." In ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASMEDC, 2008. http://dx.doi.org/10.1115/mnht2008-52351.

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The use of SOLID-particles has long been a common way of increasing fluid thermal conductivity. In this paper, nanoemulsion fluids—dispersions of LIQUID-nanodroplets—are proposed. As an example, water-in-FC72 nanoemulsion fluids are developed, and their thermophysical properties and impact on natural convective heat transfer are investigated experimentally. A significant increase in thermal conductivity—up to 52% for 12vol% of water nanodroplets (or 7.1 wt%)—is observed in the fluids. The enhancement in conductivity and viscosity of the fluids is found to be nonlinear with water loading, indic
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Schinnerl, Mario, Wolfgang Beer, and Reinhard Willinger. "Interpretation of Unexpected Aggregation of Condensate in Shrouded HP-Stages of an Industrial Steam Turbine." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26083.

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Unexplainable rotor oscillations occured at an industrial steam turbine with air condenser shortly after startup of the plant, but already at specified load points. These oscillations led to immediate shutdowns and were not explainable with conventional reasons at that time. After several oscillation measurements and analysis a hypothesis was developed to explain the oscillation phenomena: The reason of the oscillations is an aggregation of condensate in a labyrinth seal of one or more turbine stages which acts like additional bearings and shifts the eigenfrequencies of the whole system. This
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Liu, Wing Kam, and Ashfaq Adnan. "Multiscale Modeling and Simulation for Nanodiamond-Based Therapeutic Delivery." In ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology. ASMEDC, 2010. http://dx.doi.org/10.1115/nemb2010-13273.

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It has been demonstrated from recent research that nanodiamond(ND)-enabled drug delivery as cancer therapeutics represents an important component of optimized device functionality. The goal of the current research is to develop a multiscale modeling technique to understand the fundamental mechanism of a ND-based cancer therapeutic drug delivery system. The major components of the proposed device include nanodiamonds (ND), parylene buffer layer and doxorubicin (DOX) drugs, where DOX loaded self-assembled nanodiamonds are packed inside parylene capsule. The efficient functioning of the device is
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