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Relevant bibliographies by topics / H-bubbles

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Academic literature on the topic 'H-bubbles'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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Journal articles on the topic "H-bubbles"

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Guerra, André, Xavier Lamy, and Konstantinos Zemas. "On the existence of degenerate solutions of the two-dimensional H-system." Comptes Rendus. Mathématique 363, G3 (2025): 271–81. https://doi.org/10.5802/crmath.731.

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We consider entire solutions ω∈H ˙ 1 (ℝ 2 ;ℝ 3 ) of the H-systemΔω=2ω x ∧ω y which we refer to as bubbles. Surprisingly, and contrary to conjectures raised in the literature, we find that bubbles with degree at least three can be degenerate: the linearized H-system around a bubble can admit solutions that are not tangent to the smooth family of bubbles. We then give a complete algebraic characterization of degenerate bubbles.

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Occhionero, Franco, Luca Amendola, and Pier Stefano Corasaniti. "Primordial Bubbles within Primordial Bubbles." Symposium - International Astronomical Union 201 (2005): 497–98. http://dx.doi.org/10.1017/s0074180900216847.

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Two consecutive, distinct episodes of phase transition occurring during inflation may nucleate two generations of bubbles, one inside the other. We design a model of inflation that realizes this sequence and yields bubble spectra that are bimodal and tunable functions of phenomelogical parameters in turn combinations of microphysical parameters. We argue in favor of a tuning of the parameters such that the outer and earlier generation of bubbles becomes hundreds of Mpc/h in diameter (like the local Hubble bubbles of the literature) whereas the inner and later generation becomes tens of Mpc/h i

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Li, G., B. Ning, L. Liu, W. Wan, and J. Y. Liu. "Effect of magnetic activity on plasma bubbles over equatorial and low-latitude regions in East Asia." Annales Geophysicae 27, no. 1 (2009): 303–12. http://dx.doi.org/10.5194/angeo-27-303-2009.

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Abstract. The dependence of plasma bubble occurrence in the eveningside ionosphere, with magnetic activity during the period years 2001–2004, is studied here based on the TEC observations gathered by ground-based GPS receivers which are located in the equatorial and low-latitude regions in East Asia. The observed plasma bubbles consist of the plasma-bubble events in the equatorial (stations GUAM, PIMO and KAYT), and low-latitude regions (stations WUHN, DAEJ and SHAO). It is shown that most equatorial plasma-bubble events commence at 20:00 LT, and may last for >60 min. The magnetic activity

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Randsoe, Thomas, and Ole Hyldegaard. "Effect of oxygen breathing on micro oxygen bubbles in nitrogen-depleted rat adipose tissue at sea level and 25 kPa altitude exposures." Journal of Applied Physiology 113, no. 3 (2012): 426–33. http://dx.doi.org/10.1152/japplphysiol.00193.2012.

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The standard treatment of altitude decompression sickness (aDCS) caused by nitrogen bubble formation is oxygen breathing and recompression. However, micro air bubbles (containing 79% nitrogen), injected into adipose tissue, grow and stabilize at 25 kPa regardless of continued oxygen breathing and the tissue nitrogen pressure. To quantify the contribution of oxygen to bubble growth at altitude, micro oxygen bubbles (containing 0% nitrogen) were injected into the adipose tissue of rats depleted from nitrogen by means of preoxygenation (fraction of inspired oxygen = 1.0; 100%) and the bubbles stu

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Hou, L. G., and X. Y. Gao. "Radio recombination line observations towards Spitzer infrared bubbles with the TianMa radio telescope." Monthly Notices of the Royal Astronomical Society 489, no. 4 (2019): 4862–74. http://dx.doi.org/10.1093/mnras/stz2466.

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ABSTRACT Many of the Spitzer infrared bubbles identified by the Milky Way Project (MWP) are suggested to be $\rm{H \small {II}} $ regions in nature. More than 70 per cent of the ∼5000 known bubbles do not have radio recombination line (RRL) observations, hence have not been confirmed as $\rm{H \small {II}} $ regions. A systematic RRL survey should be helpful to identify the nature of the bubbles. With the Shanghai TianMa 65-m radio telescope, we searched for RRLs towards 216 selected Spitzer bubbles by simultaneously observing 19 RRLs in the C band (4–8 GHz). RRLs are detected in the direction

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Palmeirim, P., A. Zavagno, D. Elia, et al. "Spatial distribution of star formation related to ionized regions throughout the inner Galactic plane." Astronomy & Astrophysics 605 (September 2017): A35. http://dx.doi.org/10.1051/0004-6361/201629963.

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We present a comprehensive statistical analysis of star-forming objects located in the vicinities of 1360 bubble structures throughout the Galactic plane and their local environments. The compilation of ~70 000 star-forming sources, found in the proximity of the ionized (Hii) regions and detected in both Hi-GAL and GLIMPSE surveys, provided a broad overview of the different evolutionary stages of star-formation in bubbles, from prestellar objects to more evolved young stellar objects (YSOs). Surface density maps of star-forming objects clearly reveal an evolutionary trend where more evolved st

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Song, Yan Yan, Guo Qi Liu, Hong Xia Li, and Wen Gang Yang. "Influence of Ladle Purging Plug Airway on Flow Properties of Liquid Steel." Advanced Materials Research 472-475 (February 2012): 2581–87. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.2581.

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The influence of the different airway structure on mixing time of molten steel are studied through using water model experiments. The bubble volume and velocity have been investigated through the PIV for different airway structure in the flow of 1m3/h. Results showed that with the slit distribution same, the smaller the slit width, the greater the volume percentage of the large bubbles and the average velocity of the bubbles in rising, but the shorter the mixing time. Reduce the number of the slit can lead to the volume percentage of the large bubbles and the average velocity of the bubbles in

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Randsøe, T., T. M. Kvist, and O. Hyldegaard. "Effect of oxygen and heliox breathing on air bubbles in adipose tissue during 25-kPa altitude exposures." Journal of Applied Physiology 105, no. 5 (2008): 1492–97. http://dx.doi.org/10.1152/japplphysiol.90840.2008.

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At altitude, bubbles are known to form and grow in blood and tissues causing altitude decompression sickness. Previous reports indicate that treatment of decompression sickness by means of oxygen breathing at altitude may cause unwanted bubble growth. In this report we visually followed the in vivo changes of micro air bubbles injected into adipose tissue of anesthetized rats at 101.3 kPa (sea level) after which they were decompressed from 101.3 kPa to and held at 25 kPa (10,350 m), during breathing of oxygen or a heliox(34:66) mixture (34% helium and 66% oxygen). Furthermore, bubbles were stu

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Wang, Ziyue, Liansheng Liu, Runze Duan, and Liang Tian. "The aerobreakup of bubbles in continuous airflow." Physics of Fluids 34, no. 4 (2022): 043317. http://dx.doi.org/10.1063/5.0086604.

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Floating soap bubbles usually break up owing to gravitational drainage, surface evaporation, environmental disturbances, and collisions with objects. If a gust of wind blows into a bubble, does the bubble break, and, if so, how does it do so? This study reports experiments that use a high-speed camera to examine the dynamic behaviors of a suspended bubble that is suddenly exposed to continuous airflow. Specifically, the behaviors and mechanisms of the aerobreakup of bubbles are explored. The suspended bubble undergoes shedding and deformation under aerodynamic force and flows with airflow. As

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Ohiomoba, Emmanuel, Ayokunle Omosebi, Gao Xin, and Kunlei Liu. "(Invited) Elucidating the Hydrodynamic Behavior of Multi-Species Gas Bubbles in an Electrochemical Solvent Regenerator for Direct Air Capture." ECS Meeting Abstracts MA2022-02, no. 27 (2022): 1036. http://dx.doi.org/10.1149/ma2022-02271036mtgabs.

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Direct Air Capture (DAC) is very significant to bolstering the global drive towards net negative emissions. DAC technologies/plants have emerged in recent years, with the regeneration of the capture solvent used in the process being the major bottleneck of most aqueous technologies. [1] Leveraging electrochemical principles has offered a potential opportunity to simplify the entire solvent regeneration process and potentially reduce its overall capture cost, compared to traditional approaches. The electrochemical approach also offers the benefit of direct integrating clean energy, and also eli

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Dissertations / Theses on the topic "H-bubbles"

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Felli, Veronica. "Elliptic variational problems with critical exponent." Doctoral thesis, SISSA, 2003. http://hdl.handle.net/20.500.11767/4304.

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Acher, Thomas [Verfasser], Wolfgang H. [Akademischer Betreuer] Polifke, and Kai-Olaf [Akademischer Betreuer] Hinrichsen. "A Moments Model for the Numerical Simulation of Bubble Column Flows / Thomas Acher. Gutachter: Wolfgang H. Polifke ; Kai-Olaf Hinrichsen. Betreuer: Wolfgang H. Polifke." München : Universitätsbibliothek der TU München, 2015. http://d-nb.info/1069986135/34.

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Books on the topic "H-bubbles"

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Herbert, George Robert C. South Sea Bubbles, by the Earl [of Pembroke] and the Doctor [G. H. Kingsley]. Creative Media Partners, LLC, 2023.

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Herbert, George Robert C. South Sea Bubbles, by the Earl [of Pembroke] and the Doctor [G. H. Kingsley]. Creative Media Partners, LLC, 2023.

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Book chapters on the topic "H-bubbles"

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Aulerich, Nicole M., Scott H. Irwin, and Philip Garcia. "6. Bubbles, Food Prices, and Speculation: Evidence from the CFTC’s Daily Large Trader Data Files - Nicole M. Aulerich, Scott H. Irwin, and Philip Garcia, Comment." In The Economics of Food Price Volatility. University of Chicago Press, 2014. http://dx.doi.org/10.7208/chicago/9780226129082.003.0007.

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Weaire, Denis, and Stefan Hutzler. "Local equilibrium rules." In The Physics of Foams. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198505518.003.0002.

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Abstract But the pressure was too great. He would have to. find something to make good the equilibrium. Something must come with him into the hollow void of death in his soul, fill it up, and so equalise the pressure within to the pressure without. For day by day he felt more and more like a bubble […] D. H. Lawrence, Women in Love.

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"FIG. 26 Effect of bubble size on the dimensionless plots of (z −z)/H." In Surface and Interfacial Tension. CRC Press, 2004. http://dx.doi.org/10.1201/9780203021262-23.

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Conference papers on the topic "H-bubbles"

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Li, F., C. Zhang, and T. Shao. "Properties Improvement of Epoxy Resin/h-BN Composites by Modified Nano-Filler Based on Plasma Bubbles Treatment." In 2024 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2024. http://dx.doi.org/10.1109/icops58192.2024.10626068.

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Liu, Hong-bo, and Liang-ming Pan. "The Effect of Electromagnetic Field on the Behavior of Bubbles." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15689.

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The coalescence and motion behaviors of bubbles can be influenced by electromagnetic field, it can be found in the TOKAMK fusion reactors of ITER program. In this paper, VOF (Volume of Fluid) method is adopt to simulate the single bubble rising behavior and bubble coalescence in stagnant liquid under the electromagnetic field within a cylinder closure (D = 20mm, H = 50mm). A three-dimensional numerical simulation is presented considering the driving effect of uniform electric field and magnetic field on the process of bubble rising and bubbles inline coalescence in stagnant liquid pool. The in

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Seki, Hiroki, Keisuke Fujita, Toshiyuki Ogasawara, and Hiroyuki Takahira. "Numerical Simulations of Growth and Collapse of a Bubble Between Two Parallel Walls." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-05175.

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In liquid mercury target systems for high-intense pulsed-spallation neutron sources, the material damage of the vessel wall caused by the cavitation bubble collapse is an important issue to be overcome. One remedy is to install a narrow channel for mercury flows. In such a situation, it is important to clarify the dynamics of the growth and collapse of bubbles in a narrow channel and to predict the damage of the channel walls by the bubble collapse. In the present study, therefore, the growth and collapse of bubbles between two parallel walls are investigated by using two kinds of numerical me

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Billette, Stuart C., and Philip L. Marston. "Scattering of light by a coated bubble in water near the critical scattering angle." In OSA Annual Meeting. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.fr3.

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Microbubbles in the ocean may be coated by a thin film of surfactant since such substances can be abundant in natural waters. We investigated theoretical scattering patterns for a spherical gas bubble (of radius a) coated by a film of uniform thickness h and refractive index n f surrounded by water of refractive index n w = 4/3. The patterns were computed from the partial-wave series of Aden and Kerker for ka ranging from 100 to 2500 where 2π/k is the optical wavelength in water. The corresponding range of a is 7.5 to 189 μm; h ranged from 0 to 3 μm and n f was typically real and equal to 1.5.

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Liu, Jiang-Tao, Yong Tian, and Xiao-Feng Peng. "Bubble Characteristics During Boiling in Microchannels." In ASME 3rd International Conference on Microchannels and Minichannels. ASMEDC, 2005. http://dx.doi.org/10.1115/icmm2005-75163.

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A series of visualized experiments were conducted to investigate the boiling nucleation and bubble dynamics restricted within parallel microchannels on a silicon chip. The cross-section of each channel was 100 μm (W) × 100 μm (H). A high-speed CCD camera (up to 8,000 fps) was employed together with a microscope to record the boiling process. Under the present experimental conditions, the incipience of boiling was captured. The rates of bubble growth were measured at various flow and heating conditions. The interaction between vapor bubbles, vapor-liquid interface, and solid wall, was analyzed.

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Bing, Tan, Haoliang Ren, Rulei Sun, and Songbai Cheng. "Bubble Features on SiC Surfaces in Flow Boiling." In 2024 31st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/icone31-134786.

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Abstract The study of bubble dynamics is crucial for understanding the boiling heat transfer process, predicting heat transfer efficiency, and preventing film boiling issues. The research aimed at experimental exploration of bubble characteristics on silicon carbide (SiC) surfaces during flow boiling at subcooling levels of 4K to 12K and fluid flow rates between 0.15–0.3 m3/h, all conducted under atmospheric pressure. The investigative method harnessed a U-net artificial neural network to meticulously identify attributes of the bubbles, focusing on properties such as orientation, perimeter, ef

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Krueger, Paul S., Razvan Bidoae, and Peter E. Raad. "Simulation of Air Entrapment by a Plunging Liquid Jet of Finite Length." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56291.

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The impingement of a finite length round water jet on a large pool of water was simulated numerically using a 3D Eulerian-Lagrangian Marker and Micro-Cell (ELMMC) method. The method allowed simulation of the initial impact of the jet on the pool surface, the deformation of the pool surface by the falling jet, and, under certain conditions, the entrapment of an air bubble as the pool closes in on the jet. The conditions considered were for ratios of jet length to radius (h/r) in the range of 4 to 25 and jet Froude number in the range of 16 to 74. The results agreed with previous experimental ob

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Knauer, Oliver S., Andreas Braeuer, Matthias C. Lang, and Alfred Leipertz. "Measurement of Concentration and Temperature Gradients at Binary Mixture Boiling Bubbles." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22054.

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Due to the high heat flux available, nucleate boiling is one of the most utilized processes for the transfer of large amounts of heat in chemical or power engineering applications. Nevertheless, the basic physical phenomena of this kind of heat transfer are physically not well understood, especially for multi-component mixtures in which the heat transfer coefficient is a function of the mixture composition. To apprehend the binary mixture boiling phenomena, the knowledge of the composition and temperature field surrounding a boiling bubble near the heater surface is of great impact. These quan

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Li, Yun, and Huiying Wu. "An Experimental Investigation of Flow Boiling Characteristics in Interconnected Microchannels With Different Slot Arrangement." In ASME 2022 Heat Transfer Summer Conference collocated with the ASME 2022 16th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/ht2022-81624.

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Abstract Flow boiling in microchannels is a promising approach to solve the heat dissipation problems of the electronic components. In this work, two types of interconnected slot microchannels (SM) with the staggered (SSM) and in-line (ISM) arrangement of the slots (W = 300μm, H = 600μm) are fabricated. Flow boiling experiments are conducted in the SMs (W = 300μm, H = 600μm, L = 35mm) at mass fluxes of 118–370 kg/m2·s, with the deionized water being used as the working fluid. It is found that compared with plain-wall microchannels (PM), the critical heat fluxes (CHF) in ISM are increased by 24

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Povich, Matt. "Beyond Strömgren Spheres and Wind-Blown Bubbles: An Observational Perspective on H II Region Feedback." In Frank N. Bash Symposium 2011: New Horizons in Astronomy. Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.149.0006.

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Reports on the topic "H-bubbles"

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Sartain, Bradley, Kurt Getsinger, Damian Walter, John Madsen, and Shayne Levoy. Flowering rush control in hydrodynamic systems : part 1 : water exchange processes. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45425.

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In 2018, field trials evaluated water-exchange processes using rhodamine WT dye to provide guidance on the effective management of flowering rush (Butomus umbellatus L.) at McNary Dam and Reservoir (Wallula Lake, 15,700 ha). Additional evaluations determined the effectiveness of BubbleTubing (hereafter referred to as bubble curtain) at reducing water exchange within potential flowering rush treatment areas. Dye readings were collected from multiple sampling points at specific time intervals until a dye half-life could be determined. Whole-plot dye half-lives at sites without bubble curtain ran

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Lahav, Ori, Albert Heber, and David Broday. Elimination of emissions of ammonia and hydrogen sulfide from confined animal and feeding operations (CAFO) using an adsorption/liquid-redox process with biological regeneration. United States Department of Agriculture, 2008. http://dx.doi.org/10.32747/2008.7695589.bard.

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The project was originally aimed at investigating and developing new efficient methods for cost effective removal of ammonia (NH₃) and hydrogen sulfide (H₂S) from Concentrated Animal Feeding Operations (CAFO), in particular broiler and laying houses (NH₃) and hog houses (H₂S). In both cases, the principal idea was to design and operate a dedicated air collection system that would be used for the treatment of the gases, and that would work independently from the general ventilation system. The advantages envisaged: (1) if collected at a point close to the source of generation, pollutants would

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