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Journal articles on the topic 'Coagulation and condensation structures'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Kärcher, B. "Simulating gas-aerosol-cirrus interactions: Process-oriented microphysical model and applications." Atmospheric Chemistry and Physics Discussions 3, no. 4 (2003): 4129–81. http://dx.doi.org/10.5194/acpd-3-4129-2003.

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Abstract. This work describes a process-oriented, microphysical-chemical model to simulate the formation and evolution of aerosols and ice crystals under the conditions prevailing in the upper troposphere and lower stratosphere. The model can be run as a box model or along atmospheric trajectories, and considers mixing, gas phase chemistry of aerosol precursors, binary homogeneous aerosol nucleation, homogeneous and heterogeneous ice nucleation, coagulation, condensation and dissolution, gas retention during particle freezing, gas trapping in growing ice crystals, and reverse processes. Chemic

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Kärcher, B. "Simulating gas-aerosol-cirrus interactions: Process-oriented microphysical model and applications." Atmospheric Chemistry and Physics 3, no. 5 (2003): 1645–64. http://dx.doi.org/10.5194/acp-3-1645-2003.

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Abstract. This work describes a process-oriented, microphysical-chemical model to simulate the formation and evolution of aerosols and ice crystals under the conditions prevailing in the upper troposphere and lower stratosphere. The model can be run as a box model or along atmospheric trajectories, and considers mixing, gas phase chemistry of aerosol precursors, binary homogeneous aerosol nucleation, homogeneous and heterogeneous ice nucleation, coagulation, condensation and dissolution, gas retention during particle freezing, gas trapping in growing ice crystals, and reverse processes. Chemic

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Owen, James E. "Snow lines can be thermally unstable." Monthly Notices of the Royal Astronomical Society 495, no. 3 (2020): 3160–74. http://dx.doi.org/10.1093/mnras/staa1309.

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ABSTRACT Volatile species in protoplanetary discs can undergo a phase change from vapour to solid. These ‘snow lines’ can play vital roles in planet formation at all scales, from dust coagulation to planetary migration. In the outer regions of protoplanetary discs, the temperature profile is set by the absorption of reprocessed stellar light by the solids. Further, the temperature profile sets the distribution of solids through sublimation and condensation at various snow lines. Hence, the snow line position depends on the temperature profile and vice versa. We show that this coupling can be t

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Adachi, K., and P. R. Buseck. "Internally mixed soot, sulfates, and organic matter in aerosol particles from Mexico City." Atmospheric Chemistry and Physics 8, no. 21 (2008): 6469–81. http://dx.doi.org/10.5194/acp-8-6469-2008.

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Abstract. Soot particles, which are aggregated carbonaceous spherules with graphitic structures, are major aerosol constituents that result from burning of fossil fuel, biofuel, and biomass. Their properties commonly change through reaction with other particles or gases, resulting in complex internal mixtures. Using a transmission electron microscope (TEM) for both imaging and chemical analysis, we measured ~8000 particles (25 samples) with aerodynamic diameters from 0.05 to 0.3 μm that were collected in March 2006 from aircraft over Mexico City (MC) and adjacent areas. Most particles are coat

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Korneyeva, E. V., G. I. Berdov, and S. A. Sozinov. "FEATURES OF THE FORMATION OF THE STRUCTURE OF A CEMENTLESS MATRIX COMPOSITE BASED ON MECHANICALLY ACTIVATED TECHNOGENIC RAW MATERIALS." Construction and Geotechnics 11, no. 1 (2020): 102–14. http://dx.doi.org/10.15593/2224-9826/2020.1.10.

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The creation of composite materials using mechanically activated technogenic raw materials is relevant today as part of a large-scale task of construction and technological utilization of technogenic formations. The change in the crystal structure using mechanochemistry increases the activity of technogenic products: the number of coagulation contacts of dissimilar particles increases, increases the plastic strength of the hardening mixture, formation of hydration products is accelerated. The article is devoted to the study of the mechanism of structural and rheological transformations of a ce

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Faucher-Giguère, Claude-André, and S. Peng Oh. "Key Physical Processes in the Circumgalactic Medium." Annual Review of Astronomy and Astrophysics 61, no. 1 (2023): 131–95. http://dx.doi.org/10.1146/annurev-astro-052920-125203.

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Spurred by rich, multiwavelength observations and enabled by new simulations, ranging from cosmological to subparsec scales, the past decade has seen major theoretical progress in our understanding of the circumgalactic medium (CGM). We review key physical processes in the CGM. Our conclusions include the following: ▪ The properties of the CGM depend on a competition between gravity-driven infall and gas cooling. When cooling is slow relative to free fall, the gas is hot (roughly virial temperature), whereas the gas is cold ( T ∼ 104 K) when cooling is rapid. ▪ Gas inflows and outflows play cr

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Курбатов, Vladimir Kurbatov, Комарова, and Natalya Komarova. "DISPERSE RAW MIXES, THEIR FEATURES OF CAPILLARY STRUCTURIZATION." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 2, no. 1 (2016): 33–36. http://dx.doi.org/10.12737/24087.

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In space and in time the structure of any material continuously undergoes changes, to it, in particular, the constant movement of elementary particles, atoms, molecules, interaction of material with the environment promote. For example, almost all construction materials and their raw mixes, at least, at the microlevel, represent the microheterogeneous disperse systems consisting several phases to which number the liquid component belongs. The nature of structure of such systems in many respects is de-fined by character and size of communications or forces of adhesion between structural element

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8

Garrick, Sean C. "Growth Mechanisms of Nanostructured Titania in Turbulent Reacting Flows." Journal of Nanotechnology 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/642014.

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Titanium dioxide (titania) is used in chemical sensors, pigments, and paints and holds promise as an antimicrobial agent. This is due to its photoinduced activity and, in nanostructured form, its high specific surface area. Particle size and surface area result from the interplay of fluid, chemical, and thermal dynamics as well as nucleation, condensation and coagulation. After nucleation, condensation, and coagulation are the dominant phenomena affecting the particle size distribution. Manufacture of nanostructured titania via gas-phase synthesis often occurs under turbulent flow conditions.

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9

Lushnikov, A. A., and M. Kulmala. "New selfpreserving regimes of coagulation-condensation." Journal of Aerosol Science 32 (September 2001): 981–92. http://dx.doi.org/10.1016/s0021-8502(01)00138-0.

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10

Liu, Hongmei, Jingping Shao, Wei Jiang, and Xuedong Liu. "Numerical Modeling of Droplet Aerosol Coagulation, Condensation/Evaporation and Deposition Processes." Atmosphere 13, no. 2 (2022): 326. http://dx.doi.org/10.3390/atmos13020326.

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The differentially weighted operator-splitting Monte Carlo (DWOSMC) method is further developed to describe the droplet aerosol dynamic behaviors, including coagulation, deposition, condensation, and evaporation processes. It is first proposed that the droplet aerosols will experience firstly condensation and then evaporation, and this phenomenon is first implemented into the Monte Carlo method and sectional method with considering coagulation, deposition, and condensation/evaporation processes in both single-component and two-component aerosol particle systems. It is found that the calculated

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11

Cai, Runlong, Chenxi Li, Xu-Cheng He, et al. "Impacts of coagulation on the appearance time method for new particle growth rate evaluation and their corrections." Atmospheric Chemistry and Physics 21, no. 3 (2021): 2287–304. http://dx.doi.org/10.5194/acp-21-2287-2021.

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Abstract. The growth rate of atmospheric new particles is a key parameter that determines their survival probability of becoming cloud condensation nuclei and hence their impact on the climate. There have been several methods to estimate the new particle growth rate. However, due to the impact of coagulation and measurement uncertainties, it is still challenging to estimate the initial growth rate of new particles, especially in polluted environments with high background aerosol concentrations. In this study, we explore the influences of coagulation on the appearance time method to estimate th

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Sinaiskii, �. G., and V. N. Men'shov. "Drop condensation and coagulation during gas throttling." Journal of Engineering Physics 52, no. 1 (1987): 13–17. http://dx.doi.org/10.1007/bf00870194.

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13

Maetzing, H., W. Baumann, and H. R. Paur. "Bimodal aerosol coagulation with simultaneous condensation/evaporation." Journal of Aerosol Science 27 (September 1996): S363—S364. http://dx.doi.org/10.1016/0021-8502(96)00254-6.

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14

Liu, Li Ping, Guo Dong Song, and Lei Yu. "The Research Progress of Coagulation Technology on Fine Particles." Applied Mechanics and Materials 723 (January 2015): 715–18. http://dx.doi.org/10.4028/www.scientific.net/amm.723.715.

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This article reviewed some of the measures taken to control particulate matters by combining the latest fine particles dominating technologies both at home and abroad. The coagulation technological principles and research achievements of fine particles were suggested. The research highlightly analyzed the technical principles and characteristics of electric coagulation technology, acoustic coagulation technology, vapor condensation technology, thermal coagulation technology,chemical coagulation technology, magnetic coagulation technology, turbulent coagulation technology and light coagulation

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15

Jacquot, Oscar, and Karine Sartelet. "Numerical investigations on the modelling of ultrafine particles in SSH-aerosol-v1.3a: size resolution and redistribution." Geoscientific Model Development 18, no. 12 (2025): 3965–84. https://doi.org/10.5194/gmd-18-3965-2025.

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Abstract. As the health impacts of ultrafine particles become better understood, accurately modelling size distribution and number concentration in chemistry-transport models is becoming increasingly important. The number concentration is strongly affected by processes linked to aerosol dynamics: coagulation, condensation, gas- and particle-phase partitioning, and nucleation. Coagulation is usually solved using an Eulerian approach, relying on a fixed discretization of particle sizes. In contrast, condensation and evaporation processes are rather solved using a Lagrangian approach, requiring r

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He, C., Q. Li, K. N. Liou, L. Qi, S. Tao, and J. P. Schwarz. "Microphysics-based black carbon aging in a global CTM: constraints from HIPPO observations and implications for global black carbon budget." Atmospheric Chemistry and Physics Discussions 15, no. 22 (2015): 32779–829. http://dx.doi.org/10.5194/acpd-15-32779-2015.

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Abstract. We develop and examine a microphysics-based black carbon (BC) aerosol aging scheme that accounts for condensation and coagulation processes in a global 3-D chemical transport model (GEOS-Chem) by interpreting the BC measurements from the HIAPER Pole-to-Pole Observations (HIPPO, 2009–2011) using the model. We convert aerosol mass in the model to number concentration by assuming lognormal aerosol size distributions and compute the microphysical BC aging rate explicitly from the condensation of soluble materials onto hydrophobic BC and the coagulation between hydrophobic BC and preexist

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He, Cenlin, Qinbin Li, Kuo-Nan Liou, Ling Qi, Shu Tao, and Joshua P. Schwarz. "Microphysics-based black carbon aging in a global CTM: constraints from HIPPO observations and implications for global black carbon budget." Atmospheric Chemistry and Physics 16, no. 5 (2016): 3077–98. http://dx.doi.org/10.5194/acp-16-3077-2016.

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Abstract. We develop and examine a microphysics-based black carbon (BC) aerosol aging scheme that accounts for condensation, coagulation, and heterogeneous chemical oxidation processes in a global 3-D chemical transport model (GEOS-Chem) by interpreting the BC measurements from the HIAPER Pole-to-Pole Observations (HIPPO, 2009–2011) using the model. We convert aerosol mass in the model to number concentration by assuming lognormal aerosol size distributions and compute the microphysical BC aging rate (excluding chemical oxidation aging) explicitly from the condensation of soluble materials ont

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18

Pratsinis, Sotiris E. "Simultaneous nucleation, condensation, and coagulation in aerosol reactors." Journal of Colloid and Interface Science 124, no. 2 (1988): 416–27. http://dx.doi.org/10.1016/0021-9797(88)90180-4.

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19

Sterzik, Michael F., and Gregor E. Morfill. "Evolution of Protoplanetary Disks with Condensation and Coagulation." Icarus 111, no. 2 (1994): 536–46. http://dx.doi.org/10.1006/icar.1994.1162.

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20

Zhu, S., K. N. Sartelet, and C. Seigneur. "A size-composition resolved aerosol model for simulating the dynamics of externally mixed particles: SCRAM (v 1.0)." Geoscientific Model Development 8, no. 6 (2015): 1595–612. http://dx.doi.org/10.5194/gmd-8-1595-2015.

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Abstract. The Size-Composition Resolved Aerosol Model (SCRAM) for simulating the dynamics of externally mixed atmospheric particles is presented. This new model classifies aerosols by both composition and size, based on a comprehensive combination of all chemical species and their mass-fraction sections. All three main processes involved in aerosol dynamics (coagulation, condensation/evaporation and nucleation) are included. The model is first validated by comparison with a reference solution and with results of simulations using internally mixed particles. The degree of mixing of particles is

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21

Fierce, L., N. Riemer, and T. Bond. "Explaining variance in black carbon's aging timescale." Atmospheric Chemistry and Physics Discussions 14, no. 13 (2014): 18703–37. http://dx.doi.org/10.5194/acpd-14-18703-2014.

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Abstract. The size and composition of particles containing black carbon (BC) are modified soon after emission by condensation of semi-volatile substances and coagulation with other particles, known collectively as "aging" processes. Although this change in particle properties is widely recognized, the timescale for transformation is not well constrained. In this work, we simulated aerosol aging with the particle-resolved model PartMC-MOSAIC and extracted aging timescales based on changes in particle cloud condensation nuclei (CCN). We simulated nearly 300 scenarios and, through a regression an

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22

Fierce, L., N. Riemer, and T. C. Bond. "Explaining variance in black carbon's aging timescale." Atmospheric Chemistry and Physics 15, no. 6 (2015): 3173–91. http://dx.doi.org/10.5194/acp-15-3173-2015.

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Abstract. The size and composition of particles containing black carbon (BC) are modified soon after emission by condensation of semivolatile substances and coagulation with other particles, known collectively as "aging" processes. Although this change in particle properties is widely recognized, the timescale for transformation is not well constrained. In this work, we simulated aerosol aging with the particle-resolved model PartMC-MOSAIC (Particle Monte Carlo – Model for Simulating Aerosol Interactions and Chemistry) and extracted aging timescales based on changes in particle cloud condensat

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23

Tian, J., N. Riemer, M. West, L. Pfaffenberger, H. Schlager, and A. Petzold. "Modeling the evolution of aerosol particles in a ship plume using PartMC-MOSAIC." Atmospheric Chemistry and Physics 14, no. 11 (2014): 5327–47. http://dx.doi.org/10.5194/acp-14-5327-2014.

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Abstract. This study investigates the evolution of ship-emitted aerosol particles using the stochastic particle-resolved model PartMC-MOSAIC (Particle Monte Carlo model-Model for Simulating Aerosol Interactions and Chemistry). Comparisons of our results with observations from the QUANTIFY (Quantifying the Climate Impact of Global and European Transport Systems) study in 2007 in the English Channel and the Gulf of Biscay showed that the model was able to reproduce the observed evolution of total number concentration and the vanishing of the nucleation mode consisting of sulfate particles. Furth

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Priya P., Meena, and Nirmala P. Ratchagar. "Coagulation and Condensation of Aerosols in Atmospheric Dispersion Model." Journal of Computational Multiphase Flows 5, no. 2 (2013): 115–38. http://dx.doi.org/10.1260/1757-482x.5.2.115.

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25

Davis, Sheldon B., Thomas K. Gale, Jost O. L. Wendt, and William P. Linak. "Multicomponent coagulation and condensation of toxic metals in combustors." Symposium (International) on Combustion 27, no. 2 (1998): 1785–91. http://dx.doi.org/10.1016/s0082-0784(98)80020-9.

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26

Palaniswaamy, Geethpriya, and Sudarshan K. Loyalka. "Direct simulation, Monte Carlo, aerosol dynamics: Coagulation and condensation." Annals of Nuclear Energy 35, no. 3 (2008): 485–94. http://dx.doi.org/10.1016/j.anucene.2007.06.024.

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27

KELLER, A., and H. C. SIEGMANN. "The role of condensation and coagulation in aerosol monitoring." Journal of Exposure Science & Environmental Epidemiology 11, no. 6 (2001): 441–48. http://dx.doi.org/10.1038/sj.jea.7500187.

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28

Elmegreen, Bruce G. "What do we really know about Cloud Formation?" Symposium - International Astronomical Union 169 (1996): 551–60. http://dx.doi.org/10.1017/s0074180900230325.

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Four processes of molecular cloud formation are discussed: formation in swept-up shells, coagulation of smaller clouds, condensation in larger clouds, and compression in a supersonically turbulent medium. Examples and constraints for each process are given.

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Jung, Chang H., Ji Yi Lee, and Yong P. Kim. "Changes in the Ångstrom Exponent during Aerosol Coagulation and Condensation." Asian Journal of Atmospheric Environment 6, no. 4 (2012): 304–13. http://dx.doi.org/10.5572/ajae.2012.6.4.304.

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30

Smith, Naftali R., Nir J. Shaviv, and Henrik Svensmark. "Approximate analytical solutions to the condensation-coagulation equation of aerosols." Aerosol Science and Technology 50, no. 6 (2016): 578–90. http://dx.doi.org/10.1080/02786826.2016.1168921.

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31

Piskunov, Vladimir N. "Analytical solutions for coagulation and condensation kinetics of composite particles." Physica D: Nonlinear Phenomena 249 (April 2013): 38–45. http://dx.doi.org/10.1016/j.physd.2013.01.008.

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32

Shigeta, Masaya, Yusuke Hirayama, and Emanuele Ghedini. "Computational Study of Quenching Effects on Growth Processes and Size Distributions of Silicon Nanoparticles at a Thermal Plasma Tail." Nanomaterials 11, no. 6 (2021): 1370. http://dx.doi.org/10.3390/nano11061370.

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In this paper, quenching effects on silicon nanoparticle growth processes and size distributions at a typical range of cooling rates in a thermal plasma tail are investigated computationally. We used a nodal-type model that expresses a size distribution evolving temporally with simultaneous homogeneous nucleation, heterogeneous condensation, interparticle coagulation, and melting point depression. The numerically obtained size distributions exhibit similar size ranges and tendencies to those of experiment results obtained with and without quenching. In a highly supersaturated state, 40–50% of

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33

Liu, Shuyuan, and Tat L. Chan. "A stochastically weighted operator splitting Monte Carlo (SWOSMC) method for the numerical simulation of complex aerosol dynamic processes." International Journal of Numerical Methods for Heat & Fluid Flow 27, no. 1 (2017): 263–78. http://dx.doi.org/10.1108/hff-08-2015-0335.

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Purpose The purpose of this paper is to study the complex aerosol dynamic processes by using this newly developed stochastically weighted operator splitting Monte Carlo (SWOSMC) method. Design/methodology/approach Stochastically weighted particle method and operator splitting method are coupled to formulate the SWOSMC method for the numerical simulation of particle-fluid systems undergoing the complex simultaneous processes. Findings This SWOSMC method is first validated by comparing its numerical simulation results of constant rate coagulation and linear rate condensation with the correspondi

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34

Ros, Katrin. "Ice Condensation as a Planet Formation Mechanism." Proceedings of the International Astronomical Union 8, S299 (2013): 382–83. http://dx.doi.org/10.1017/s1743921313009022.

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AbstractParticles in protoplanetary discs grow rapidly to millimetre-sizes via coagulation, but further growth to centimetre-sized pebbles is not yet completely understood. We investigate particle growth by ice condensation in a model where we take the dynamical behaviour of vapour and ice particles into account, as well as the size evolution due to condensation and sublimation. Our results show that efficient growth from dust to pebbles is possible close to the water ice line at ~3 AU, with particles growing from millimetres to decimetres on a time scale of 10000 yr.

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Dymaczewski, Zbysław, Edward S. Kempa, and Marek M. Sozanski. "Coagulation as a structure-forming separation process in water and wastewater treatment." Water Science and Technology 36, no. 4 (1997): 25–32. http://dx.doi.org/10.2166/wst.1997.0078.

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This paper presents the results of research on coagulation sludge properties in three waterworks. The investigation assumed: chemical composition, specific surface of coagulation structures, their sedimentation, gravity thickening and rheological parameters. The solid fraction of the examined structures consisted mostly of mineral substances, especially silica, aluminium and iron oxides. This composition is typical for most coagulation sludges formed in surface water treatment facilities. It has been determined, that the main factor determining structures properties is chemical composition of

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June, Nicole A., Anna L. Hodshire, Elizabeth B. Wiggins, et al. "Aerosol size distribution changes in FIREX-AQ biomass burning plumes: the impact of plume concentration on coagulation and OA condensation/evaporation." Atmospheric Chemistry and Physics 22, no. 19 (2022): 12803–25. http://dx.doi.org/10.5194/acp-22-12803-2022.

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Abstract. The evolution of organic aerosol (OA) and aerosol size distributions within smoke plumes is uncertain due to the variability in rates of coagulation and OA condensation/evaporation between different smoke plumes and at different locations within a single plume. We use aircraft data from the FIREX-AQ campaign to evaluate differences in evolving aerosol size distributions, OA, and oxygen to carbon ratios (O:C) between and within smoke plumes during the first several hours of aging as a function of smoke concentration. The observations show that the median particle diameter increases fa

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Bache, D. H., C. Johnson, E. Papavasilopoulos, E. Rasool, and F. J. McGilligan. "Sweep coagulation: structures, mechanisms and practice." Journal of Water Supply: Research and Technology-Aqua 48, no. 5 (1999): 201–10. http://dx.doi.org/10.2166/aqua.1999.0022.

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Yin, Zhao Qin, Jian Zhong Lin, and Li Juan Qian. "An Experimental Study on the Characteristics of Nanoparticles Emission from a Vehicle." Advanced Materials Research 508 (April 2012): 180–83. http://dx.doi.org/10.4028/www.scientific.net/amr.508.180.

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The Fast Mobility Particle Sizer (FMPS) has been used to measure the particles number concentration and size distribution (6-560nm) of vehicle exhaust plume. The results reveal that vehicle exhaust contribute dominantly to the number concentration in the atmosphere particle. The particles total concentration decreases in the dispersion process. Furthermore, the transformation processes such as nucleation ,coagulation and condensation happen with dispersion process. Because of large number of nucleation mode particles, the coagulation process is in the advantage, which make the particles diamet

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Li, Mingjing, Guodong Huang, Bo Wang, et al. "Mechanical Properties and Coagulation Characteristics of Flue Gas Desulfurization Gypsum-Based Polymer Materials." Polymers 14, no. 21 (2022): 4761. http://dx.doi.org/10.3390/polym14214761.

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To resolve problems caused by the accumulation of flue gas desulfurization gypsum (FGDG) in the environment, a polymer material was prepared using FGDG, granulated blast furnace slag (GBFS), fly ash (FA), and solid sodium silicate (SSS). The compressive strength of these polymer specimens cured for 3, 28, and 60 d was regularly measured, and their condensation behavior was analyzed. Both the formation behavior of mineral crystals and microstructure characteristics were analyzed further using X-ray diffraction and scanning electron microscopy. The compressive strength of pure FGDG polymer speci

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Riley, Brian J., Bradley R. Johnson, H. Todd Schaef, and Shanmugavelayutham K. Sundaram. "Sublimation–Condensation of Multiscale Tellurium Structures." Journal of Physical Chemistry C 117, no. 19 (2013): 10128–34. http://dx.doi.org/10.1021/jp400363a.

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Nishimura, Tamiki, Makoto Sunagawa, Toshiya Okajima, and Yoshimasa Fukazawa. "Transition structures for the dieckmann condensation." Tetrahedron Letters 38, no. 40 (1997): 7063–66. http://dx.doi.org/10.1016/s0040-4039(97)01649-3.

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42

Bohdal, Tadeusz, Małgorzata Sikora, Katarzyna Widomska, and Andrii M. Radchenko. "Investigation of flow structures during HFE-7100 refrigerant condensation." Archives of Thermodynamics 36, no. 4 (2015): 25–34. http://dx.doi.org/10.1515/aoter-2015-0030.

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Abstract The experimental research of environmentally friendly refrigerant HFE-7100 condensation in pipe minichannels was conducted. During the investigations of HFE-7100 condensation in a minichannel with internal diameter 2 mm together with visualization of flow patterns was made. Visualization results were compared with existing flow structure maps. The identification of the range of flow patterns occurrence during the condensation process of low-pressure refrigerant HFE-7100 was made. The tests were performed throughout the whole range of condensation process.

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McGouldrick, Kevin, and Erika L. Barth. "The Influence of Cloud Condensation Nucleus Coagulation on the Venus Cloud Structure." Planetary Science Journal 4, no. 3 (2023): 50. http://dx.doi.org/10.3847/psj/acbdf8.

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Abstract We present the Venus version of PlanetCARMA and demonstrate the significance of coagulation properties on the structure of the Venus cloud system. The composition of the smallest mode of particles in the Venus atmosphere, which likely serve as cloud condensation nuclei (CCN), is unknown. Here we demonstrate that a change in the ability of CCN to grow via coagulation in the Venus atmosphere can produce measurable short-term and long-term signatures in the Venus cloud structure. Specifically, we find that the existence of a population of CCN that is prevented from growing via coagulatio

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KURILIĆ, MILOŠ S. "RETRACTIONS OF REVERSIBLE STRUCTURES." Journal of Symbolic Logic 82, no. 4 (2017): 1422–37. http://dx.doi.org/10.1017/jsl.2017.60.

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AbstractA relational structure is called reversible iff each bijective endomorphism (condensation) of that structure is an automorphism. We show that reversibility is an invariant of some forms of L∞ω −bi-interpretability, implying that the condensation monoids of structures are topologically isomorphic. Applying these results, we prove that, in particular, all orbits of ultrahomogeneous tournaments and reversible ultrahomogeneous m-uniform hypergraphs are reversible relations and that the same holds for the orbits of reversible ultrahomogeneous digraphs definable by formulas which are not R-n

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Liu, M. C., J. Han, A. J. Brearley, and A. T. Hertwig. "Aluminum-26 chronology of dust coagulation and early solar system evolution." Science Advances 5, no. 9 (2019): eaaw3350. http://dx.doi.org/10.1126/sciadv.aaw3350.

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Dust condensation and coagulation in the early solar system are the first steps toward forming the terrestrial planets, but the time scales of these processes remain poorly constrained. Through isotopic analysis of small Ca-Al–rich inclusions (CAIs) (30 to 100 μm in size) found in one of the most pristine chondrites, Allan Hills A77307 (CO3.0), for the short-lived 26Al-26Mg [t1/2 = 0.72 million years (Ma)] system, we have identified two main populations of samples characterized by well-defined 26Al/27Al = 5.40 (±0.13) × 10−5 and 4.89 (±0.10) × 10−5. The result of the first population suggests

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Riemer, N., H. Vogel, and B. Vogel. "A parameterisation of the soot aging for global climate models." Atmospheric Chemistry and Physics Discussions 4, no. 2 (2004): 2089–115. http://dx.doi.org/10.5194/acpd-4-2089-2004.

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Abstract. The representation of soot in global climate models is desirable since it contributes to both the direct and indirect climate effect. While freshly emitted soot is initially hydrophobic and externally mixed, it can be transferred into an internal mixture by coagulation, condensation or photochemical processes. These aging processes affect the hygroscopic qualities and hence the growth behaviour, the optical properties and eventually the lifetime of the soot particles. However, due to computational limits the aging of soot in global climate models is often only parameterised by an est

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Ko Zaw, Aung, O. Yarovaya, Nyan Htet Lin, and M. Donina. "Synthesis and colloidal-chemical properties of manganese dioxide hydrosols synthesized in the presence of sodium thiosulfate." E3S Web of Conferences 376 (2023): 01080. http://dx.doi.org/10.1051/e3sconf/202337601080.

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In this paper, the possibility of obtaining manganese dioxide hydrosols by condensation in the presence of sodium thiosulfate is considered. The main properties of hydrosols, including particle size and shape, phase composition, electrophoretic mobility, and the pH range of the dispersion medium in which sols are aggregatively stable, are determined. The sol coagulation thresholds in the presence of potassium chloride, sodium sulfate, and potassium sulfate were determined. It was found that the hydrosols coagulation is reversible. The nature of the aggregative stability of obtained manganese d

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Sun, Z., R. Axelbaum, and J. Huertas. "Monte Carlo Simulation of Multicomponent Aerosols Undergoing Simultaneous Coagulation and Condensation." Aerosol Science and Technology 38, no. 10 (2004): 963–71. http://dx.doi.org/10.1080/027868290513847.

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Tsivilsky, I. V., A. S. Melnikov, and A. Kh Gilmutdinov. "Multiscale modeling of powder materials processing for additive manufacturing in inductively coupled plasma." Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki 165, no. 1 (2023): 82–100. http://dx.doi.org/10.26907/2541-7746.2023.1.82-100.

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This article analyzes the approaches to macro- and mesoscale computational modeling of the dynamics of metal powder particles motion in the condensation chamber of a plasma reactor, spheroidization, coagulation, and phase transitions in particles. The features of different regimes of vaporization and condensation were described. The influence of phenomena such as Brownian motion and thermophoresis on the process was explored. The parameters of the process at which the formation of core-shell particles occurs were determined. The model can be used to optimize and select the effective regimes fo

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Croft, B., U. Lohmann, and K. von Salzen. "Black carbon ageing in the Canadian Centre for Climate modelling and analysis atmospheric general circulation model." Atmospheric Chemistry and Physics 5, no. 7 (2005): 1931–49. http://dx.doi.org/10.5194/acp-5-1931-2005.

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Abstract. Black carbon (BC) particles in the atmosphere have important impacts on climate. The amount of BC in the atmosphere must be carefully quantified to allow evaluation of the climate effects of this type of aerosol. In this study, we present the treatment of BC aerosol in the developmental version of the 4th generation Canadian Centre for Climate modelling and analysis (CCCma) atmospheric general circulation model (AGCM). The focus of this work is on the conversion of insoluble BC to soluble/mixed BC by physical and chemical ageing. Physical processes include the condensation of sulphur

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