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Artykuły w czasopismach na temat „Particle Size Distribution Analysis”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Ferguson, J. R., and D. E. Stock. "“Heavy” Particle Dispersion Measurements With Mono- and Polydisperse Particle Size Distributions." Journal of Fluids Engineering 115, no. 3 (1993): 523–26. http://dx.doi.org/10.1115/1.2910170.

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A method is presented to estimate the effects of a polydisperse particle size distribution on the measured turbulent dispersion of particles. In addition, the analysis provides a means to estimate the standard deviation of the size distribution for which a class of particles may be considered monodisperse. If monodisperse particles are unavailable because of practical considerations (e.g., the required standard deviation of particle size is too small to obtain a sufficient quantity) then the method provides a means to correct the data of near monodisperse size distributions to reflect the disp

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2

Vítěz, T., and P. Trávníček. "Particle size distribution of sawdust and wood shavings mixtures." Research in Agricultural Engineering 56, No. 4 (2010): 154–58. http://dx.doi.org/10.17221/8/2010-rae.

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Particle size distribution of the sample of waste sawdust and wood shavings mixtures were made with two commonly used methods of mathematical models by Rosin-Rammler (RR model) and by Gates-Gaudin-Schuhmann (GGS model).On the basis of network analysis distribution function F (d) (mass fraction) and density function f (d) (number of particles captured between two screens) were obtained. Experimental data were evaluated using the RR model and GGS model, both models were compared. Better results were achieved with GGS model, which leads to a more accurate separation of the different particle size

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3

Yuan, Fangyang, and Fujun Gan. "Evolution of Aerosol Particles in the Rainfall Process via Method of Moments." Abstract and Applied Analysis 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/709497.

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The method of moments is employed to predict the evolution of aerosol particles in the rainfall process. To describe the dynamic properties of particle size distribution, the population balance equation is converted to moment equations by the method of moments and the converted equations are solved numerically. The variations of particle number concentration, geometric mean diameter, and geometric standard deviation are given in the cases that the Brownian diffusion and inertial impaction of particles dominate, respectively. The effects of raindrop size distribution on particle size distributi

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4

Finder, Christiane, Michael Wohlgemuth, and Christian Mayer. "Analysis of Particle Size Distribution by Particle Tracking." Particle & Particle Systems Characterization 21, no. 5 (2004): 372–78. http://dx.doi.org/10.1002/ppsc.200400948.

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Krawczykowski, Damian, Aldona Krawczykowska, and Tomasz Gawenda. "Comparison of Geometric Properties of Regular and Irregular Mineral Grains by Dynamic Image Analysis (2D) and Optoelectronic Analysis (3D) Methods." Minerals 12, no. 5 (2022): 540. http://dx.doi.org/10.3390/min12050540.

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The properties of bulk materials are influenced by geometrical features of grains such as size, size distribution and shape. However, size is an ambiguous parameter for non-spherical particles. Therefore, the influence of the shape of a particle on its size, as described by various measuring methods and estimators using the main particle dimensions, was studied here. Granulometric analyses of mineral raw material samples containing regular and irregular grains were performed as part of the research. The measurements were made using two methods: the dynamic image analysis and the optoelectronic

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6

He, Li Jun, De Mei Xu, Nan Hu, et al. "Model Analysis on Particles Size Distribution of Beryllium Powder." Applied Mechanics and Materials 268-270 (December 2012): 336–39. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.336.

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A physics model was established for describing the particle size distribution of beryllium (Be) powder produced by impact attrition milling. In this model, two factors were considered: the first, the distribution of existing state of particles with different original kinetic energy should obey the Maxwell-Boltzmann statistics after impacted, it was that, being at higher energy level made big particles unstable, which were easy to be fractured into smaller pieces in impact attrition process, this influencing factor described as the negative exponential of particles size; the second, the tendenc

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7

Li, Zheng Min, Zhi Wei Chen, Min Tan, Ke Jing Xu, and Bing Jiang. "Determination of Particle Size Distribution of Nano-TiO₂ Coating Film by AFM and Image Analysis." Advanced Materials Research 177 (December 2010): 22–24. http://dx.doi.org/10.4028/www.scientific.net/amr.177.22.

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Nano-TiO2 coating film is one of the efficient photocatalysts. The particle size distribution of TiO2 has important influence on photocatalytic activity. A new method to determine the particle size distribution of TiO2 nano-film coated on ceramic was developed, by which the images of film acquired by Atom force microscope (AFM) were processed, and TiO2 particles contacted with others were separated and detected. The particle size distributions of two TiO2 nano-films were determined.

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8

Welker, Roger. "Size Distributions of Particles Extracted from Different Materials Compared with the MIL-STD-1246 Particle Size Distribution." Journal of the IEST 43, no. 4 (2000): 25–29. http://dx.doi.org/10.17764/jiet.43.4.b9490831l54t44wt.

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MIL-STD-1246 particle-size distribution is the basis for specifying the particle cleanliness of surfaces for many governmental and industrial applications. MIL-STD-1246 states that naturally occurring particle contamination on surfaces follows a log-normal particle-size distribution, with a geometric mean of 1 μm, following a very precise size specification. However, the naturally occurring particle-size distribution may be a function of the material under examination or the prior cleaning or surface treatment history of the material. This paper explores the relation between the MIL-STD-1246 p

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9

Rahimi, Abbas, Andy Cordonier, and Abhilash J. Chandy. "Particle Distribution Statistics in CFD Modeling of Polymer Processing." Applied Mechanics and Materials 704 (December 2014): 12–16. http://dx.doi.org/10.4028/www.scientific.net/amm.704.12.

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This study presents statistical analysis of particle size distribution from a CFD simulation of polymer devolatilization in contactor, that uses superheated steam to isolate the polymers. This is accomplished by estimating marginal distributions of particle size and temperature using maximum Shannon Entropy theory and capturing their dependence structure by employing Copula thoery. The Copula-based conditional distribution of particles at different temperatures reveals the strong dependence of particle size to heat exchange and corresponding temperature.

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10

Wong, Jia Chyi, Li Xiang, Kuan Hoon Ngoi, Chin Hua Chia, Kyeong Sik Jin, and Moonhor Ree. "Quantitative Structural Analysis of Polystyrene Nanoparticles Using Synchrotron X-ray Scattering and Dynamic Light Scattering." Polymers 12, no. 2 (2020): 477. http://dx.doi.org/10.3390/polym12020477.

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A series of polystyrene nanoparticles (PS-1, PS-2, PS-3, and PS-4) in aqueous solutions were investigated in terms of morphological structure, size, and size distribution. Synchrotron small-angle X-ray scattering analysis (SAXS) was carried out, providing morphology details, size and size distribution on the particles. PS-1, PS-2, and PS-3 were confirmed to behave two-phase (core and shell) spherical shapes, whereas PS-4 exhibited a single-phase spherical shape. They all revealed very narrow unimodal size distributions. The structural parameter details including radial density profile were det

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11

Moncada, Manuel, Christian Rojas, Patricio Toledo, Cristian G. Rodríguez, and Fernando Betancourt. "Influence of Particle Shape and Size on Gyratory Crusher Simulations Using the Discrete Element Method." Minerals 15, no. 3 (2025): 232. https://doi.org/10.3390/min15030232.

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Gyratory crushers are fundamental machines in aggregate production and mineral processing. Discrete Element Method (DEM) simulations offer detailed insights into the performance of these machines and serve as a powerful tool for their design and analysis. However, these simulations are computationally intensive due to the large number of particles involved and the need to account for particle breakage. This study aims to investigate the effect of particle shape and size distribution on the performance of a DEM model of a gyratory crusher. The selected study case corresponds to a primary gyrato

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12

Beaucage, G., H. K. Kammler, and S. E. Pratsinis. "Particle size distributions from small-angle scattering using global scattering functions." Journal of Applied Crystallography 37, no. 4 (2004): 523–35. http://dx.doi.org/10.1107/s0021889804008969.

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Control and quantification of particle size distribution is of importance in the application of nanoscale particles. For this reason, polydispersity in particle size has been the focus of many simulations of particle growth, especially for nanoparticles synthesized from aerosols such as fumed silica, titania and alumina. Single-source aerosols typically result in close to a log-normal distribution in size and micrograph evidence generally supports close to spherical particles, making such particles ideal candidates for considerations of polydispersity. Small-angle X-ray scattering (SAXS) is of

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13

Davidson, J. A., E. A. Collins, and H. S. Haller. "Latex particle size analysis. Part III. Particle size distribution by flow ultramicroscopy." Journal of Polymer Science Part C: Polymer Symposia 35, no. 1 (2007): 235–55. http://dx.doi.org/10.1002/polc.5070350118.

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14

Amano, Yuto, Takashi Itoh, Hoshiaki Terao, and Naoyuki Kanetake. "Prediction of Packing Density of Milled Powder Based on Packing Simulation and Particle Shape Analysis." Materials Science Forum 534-536 (January 2007): 1621–24. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1621.

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For precise property control of sintered products, it is important to know the powder characteristics, especially the packing density of the powder. In a previous work, we developed a packing simulation program that could make a packed bed of spherical particles having particle size distribution. In order to predict the packing density of the actual powder that consisted of nonspherical particles, we combined the packing simulation with a particle shape analysis. We investigated the influence of the particle size distribution of the powder on the packing density by executing the packing simula

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15

Hussein, T., J. Kukkonen, H. Korhonen, et al. "Evaluation and modeling of the size fractionated aerosol particle number concentration measurements nearby a major road in Helsinki – Part II: Aerosol measurements within the SAPPHIRE project." Atmospheric Chemistry and Physics 7, no. 15 (2007): 4081–94. http://dx.doi.org/10.5194/acp-7-4081-2007.

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Abstract. This study presents an evaluation and modeling exercise of the size fractionated aerosol particle number concentrations measured nearby a major road in Helsinki during 23 August–19 September 2003 and 14 January–11 February 2004. The available information also included electronic traffic counts, on-site meteorological measurements, and urban background particle number size distribution measurement. The ultrafine particle (UFP, diameter<100 nm) number concentrations at the roadside site were approximately an order of magnitude higher than those at the urban background site during da

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16

Shin, E. B., H. S. Yoon, Y. D. Lee, Y. S. Pae, S. W. Hong, and B. H. Joo. "The effects of particle size distribution on the settleability of CSOs pollutants." Water Science and Technology 43, no. 5 (2001): 103–10. http://dx.doi.org/10.2166/wst.2001.0261.

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Over the past decades, flocculation and/or sedimentation processes have been adopted to remove pollutants from CSOs. It has been learned that major factors affecting settlement of pollutants are the particle size distribution, their settling velocities and their specific gravity. It is, therefore, a good idea to analyze the particle size distribution and settleability of CSOs pollutants in order to develop details in designing a process. Discussed in this study are pollutant characteristics of CSOs such as particle size distribution and settleability of pollutants. The power law function is ap

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17

Zhang, Kaituo, and Zhiyong Lv. "Quantitative Measuring Analysis Method and Mechanism of Wear Particle Settlement." E3S Web of Conferences 252 (2021): 03037. http://dx.doi.org/10.1051/e3sconf/202125203037.

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The size and distribution of wear particle in lubricating oil, as important numerical information available in ferrography, is one of the key indexes in wear diagnosis. In this paper, a new method for measuring the size and distribution of abrasive particles is proposed. First, all the abrasive fluid is left standing until all the abrasive particles are precipitated to the bottom. Then, the measuring container is inverted and the whole precipitation process of abrasive particles is recorded by magnetic induction instrument. And according to the precipitation analysis of the wear particle, the

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18

Langton, Maud, and Anne-Marie Hermansson. "Image analysis determination of particle size distribution." Food Hydrocolloids 7, no. 1 (1993): 11–22. http://dx.doi.org/10.1016/s0268-005x(09)80021-0.

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19

Cai, Runlong, Dongsen Yang, Lauri R. Ahonen, et al. "Data inversion methods to determine sub-3 nm aerosol size distributions using the particle size magnifier." Atmospheric Measurement Techniques 11, no. 7 (2018): 4477–91. http://dx.doi.org/10.5194/amt-11-4477-2018.

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Abstract. Measuring particle size distribution accurately down to approximately 1 nm is needed for studying atmospheric new particle formation. The scanning particle size magnifier (PSM) using diethylene glycol as a working fluid has been used for measuring sub-3 nm atmospheric aerosol. A proper inversion method is required to recover the particle size distribution from PSM raw data. Similarly to other aerosol spectrometers and classifiers, PSM inversion can be deduced from a problem described by the Fredholm integral equation of the first kind. We tested the performance of the stepwise method

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20

Neis, U., and A. Tiehm. "Particle size analysis in primary and secondary waste water effluents." Water Science and Technology 36, no. 4 (1997): 151–58. http://dx.doi.org/10.2166/wst.1997.0108.

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Primary and secondary effluents of three waste water treatment works were analyzed for the size distribution of particle mass, chemical oxygen demand (COD), and phosphorus. Fractionation of suspended solids was done by 0.1-8.0μm polycarbonate filters and 32-125μm sieves, respectively. Primary as well as secondary effluents exhibited characteristic differences in the size distribution curves. Particle size distributions in terms of particle mass could be represented by a power law function. Automatic measurement of particle size distribution by a laser scanning device (CIS-100) was evaluated. E

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21

Cardoso Mendes, Yuri, Luan Serafim Mendes Gonçalves, Ricardo Henrique de Andrade Dutra, Rodrigo Braga Moruzzi, and André Luiz de Oliveira. "Análise da floculação por meio da distribuição do tamanho de partículas." Revista DAE 221, no. 68 (2019): 12–19. http://dx.doi.org/10.36659/dae.2020.002.

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Neste trabalho foi investigada a evolução da distribuição de tamanho de partículas no processo de floculação por meio de duas funções de distribuição contínuas distintas. A coagulação e a floculação foram estudadas em escala de bancada usando como coagulantes o sulfato de alumínio, cloreto férrico e cloreto de polialu- mínio, sob diferentes gradientes de velocidade médios e tempos de floculação. O acompanhamento do pro- cesso foi feito por meio de aquisição e análise de imagens dos flocos obtidos para cada coagulante em cada gradiente médio de floculação nos tempos de floculação de 1, 2, 3, 4,

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22

Gkatzelis, G. I., D. K. Papanastasiou, K. Florou, C. Kaltsonoudis, E. Louvaris, and S. N. Pandis. "Measurement of nonvolatile particle number size distribution." Atmospheric Measurement Techniques 9, no. 1 (2016): 103–14. http://dx.doi.org/10.5194/amt-9-103-2016.

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Abstract. An experimental methodology was developed to measure the nonvolatile particle number concentration using a thermodenuder (TD). The TD was coupled with a high-resolution time-of-flight aerosol mass spectrometer, measuring the chemical composition and mass size distribution of the submicrometer aerosol and a scanning mobility particle sizer (SMPS) that provided the number size distribution of the aerosol in the range from 10 to 500 nm. The method was evaluated with a set of smog chamber experiments and achieved almost complete evaporation (> 98 %) of secondary organic as well as fre

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23

Zhang, Zhigang, Xiangyun Lan, Guangcai Wen, Qingming Long, and Xuelin Yang. "An Experimental Study on the Particle Size and Shape Distribution of Coal Drill Cuttings by Dynamic Image Analysis." Geofluids 2021 (August 21, 2021): 1–11. http://dx.doi.org/10.1155/2021/5588248.

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Particle size and shape distribution can be measured in great detail by dynamic image analysis (DIA). The narrow dispersion of repeated experiment results indicates that the particle size distribution can be obtained with high reliability. Particle size distribution can be better fitted to Rosin-Rammler equation than Gaudin-Schuhmann distribution and the lognormal distribution. The spread parameter ( m ) and the location parameters ( d 0 ) of the Rosin-Rammler equation can be calculated precisely. We analyzed the similarities and differences between the different particle shape distributions.

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24

Bartley, Paul C., William C. Fonteno, and Brian E. Jackson. "A Review and Analysis of Horticultural Substrate Characterization by Sieve Analysis." HortScience 57, no. 6 (2022): 715–25. http://dx.doi.org/10.21273/hortsci16583-22.

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The physical, hydrological, and physico-chemical properties of horticultural substrates are influenced by particle shape and size. Sieve analysis has been the predominate method used to characterize the particle size distribution of horticultural substrates. However, the literature shows a diversity of techniques and procedures. The effects of agitation time and sample size on particle size distributions of soilless substrates were evaluated for several measures of sieve analysis, including sieve rate (a calculation of the percentage of material passed for each unit time of agitation), distrib

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25

Duan, Guochen, Boqiang Shi, Yanhua Shen, and Guoqing Yu. "Establishment of a Laminated Crushed Products Function and Numerical Analysis." Energies 12, no. 5 (2019): 819. http://dx.doi.org/10.3390/en12050819.

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A model of the relative compression ratio for single-particle crushed products, based on the distinct element method (DEM) and numerical analysis, was established to describe precisely the crushed products of granular particles during laminated crushing. The relative compression ratio model was used to describe the functional relationship between the total compression ratio and the single-particle compression ratio, which can be described by lognormal distribution. The single-particle crushed products model was used to describe the functional relationship between the single-particle compressio

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26

Goto-Azuma, Kumiko, Remi Dallmayr, Yoshimi Ogawa-Tsukagawa, et al. "Technical note: High-resolution analyses of concentrations and sizes of refractory black carbon particles deposited in northwestern Greenland over the past 350 years – Part 1: Continuous flow analysis of the SIGMA-D ice core using the wide-range Single-Particle Soot Photometer and a high-efficiency nebulizer." Atmospheric Chemistry and Physics 24, no. 22 (2024): 12985–3000. http://dx.doi.org/10.5194/acp-24-12985-2024.

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Abstract. Ice cores can provide long-term records of refractory black carbon (rBC), an important aerosol species closely linked to the climate and environment. However, previous studies of ice cores only analyzed rBC particles with a diameter of < 500 nm, which could have led to an underestimation of rBC mass concentrations. Information on the size distribution of rBC particles is very limited, and there are no Arctic ice core records of the temporal variation in rBC size distribution. In this study, we applied a recently developed improved technique to analyze the rBC concentration in an i

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27

Zhu, Yong Jian, Dai Qiang Deng, and Ping Wang. "Fractal Features of Cracked Backfill Particle Size Distribution." Advanced Materials Research 588-589 (November 2012): 1894–98. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.1894.

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Based on the taking sample by geological drilling, combined with the fractal principle, analysis on the cracked backfill particle size of its fractal features and strength correlation. Even each backfill sand specimen particle size is difference, but calculation data shows that the particle size of each sand specimen has preferable fractal feature, the sand specimen particle size distribution has remarkable fractal structure by the linear fitted results of the sand specimens. The fractal relationship of strength and particle size distribution shows that with the increased of fractal dimension,

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Krudysz, M., K. Moore, M. Geller, C. Sioutas, and J. Froines. "Intra-community spatial variability of particulate matter size distributions in southern California/Los Angeles." Atmospheric Chemistry and Physics Discussions 8, no. 3 (2008): 9641–72. http://dx.doi.org/10.5194/acpd-8-9641-2008.

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Abstract. Ultrafine particle (UFP) number concentrations vary significantly on small spatial and temporal scales due to their short atmospheric lifetimes and multiplicity of sources. To determine UFP exposure gradients within a community, simultaneous particle number concentration measurements at a network of sites are necessary. Concurrent particle size distribution measurements aid in identifying UFP sources, while providing data to investigate local scale effects of both photochemical and physical processes on UFP. From April to December 2007, we monitored particle size distributions at 13

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Krudysz, M., K. Moore, M. Geller, C. Sioutas, and J. Froines. "Intra-community spatial variability of particulate matter size distributions in Southern California/Los Angeles." Atmospheric Chemistry and Physics 9, no. 3 (2009): 1061–75. http://dx.doi.org/10.5194/acp-9-1061-2009.

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Abstract. Ultrafine particle (UFP) number concentrations vary significantly on small spatial and temporal scales due to their short atmospheric lifetimes and multiplicity of sources. To determine UFP exposure gradients within a community, simultaneous particle number concentration measurements at a network of sites are necessary. Concurrent particle number size distribution measurements aid in identifying UFP sources, while providing data to investigate local scale effects of both photochemical and physical processes on UFP. From April to December 2007, we monitored particle number size distri

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Guo, Hai, Aijun Ding, Lidia Morawska, et al. "Size distribution and new particle formation in subtropical eastern Australia." Environmental Chemistry 5, no. 6 (2008): 382. http://dx.doi.org/10.1071/en08058.

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Environmental context. Atmospheric submicrometre particles have a significant impact on human health, visibility impairment, acid deposition and global climate. This study aims to understand the size distribution of submicrometre particles and new particle formation in eastern Australia and the results indicate that photochemical reactions of airborne pollutants are the main mechanism of new particle formation. The findings will contribute to a better understanding of the effects of aerosols on climate and the reduction of submicrometre particles in the atmosphere. Abstract. An intensive measu

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Teixeira, Elba Calesso, Josete Dani Sanchez, Jandyra Fachel, and Daniela Migliavacca. "Chemical characterization and size distribution of atmospheric particles in urban area - preliminary study." Ciência e Natura 21, no. 21 (1999): 29. http://dx.doi.org/10.5902/2179460x27018.

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The present work is a preliminary study with the aim of characterize the particle size and the chemical composition of aerosols in the Charqueadas County in Rio Grande do Sul State, Brazil, in order to better identify the sources responsible for alterations in the air quality. Seven filters were used for collecting material on thin nucleopore polycarbonate membrane (0,4 µm) during March/1996 to July/1996. X-ray energy dispersive scanning electron microscopy was used to determine the chemical composition of aerosol particles, and 21 elements were then analysed. Particle size distribution was me

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Varanda Rizzo, Luciana, Pontus Roldin, Joel Brito, et al. "Multi-year statistical and modeling analysis of submicrometer aerosol number size distributions at a rain forest site in Amazonia." Atmospheric Chemistry and Physics 18, no. 14 (2018): 10255–74. http://dx.doi.org/10.5194/acp-18-10255-2018.

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Abstract. The Amazon Basin is a unique region to study atmospheric aerosols, given their relevance for the regional hydrological cycle and the large uncertainty of their sources. Multi-year datasets are crucial when contrasting periods of natural conditions and periods influenced by anthropogenic emissions. In the wet season, biogenic sources and processes prevail, and the Amazonian atmospheric composition resembles preindustrial conditions. In the dry season, the basin is influenced by widespread biomass burning emissions. This work reports multi-year observations of high time resolution subm

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Liu, Xiang, and Rui Jie Yu. "Blast Furnace Slag Foundation Packing Grading and Compaction Characteristics Analysis." Applied Mechanics and Materials 368-370 (August 2013): 855–59. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.855.

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Through the packing particles analysis test and heavy compaction test at different depths of new system of Baotou steel finished product of the test section , analysis of the grain size distribution of slag and fly ash mixture and the content of coarse and fine particles on compaction effect are conducted , the results show that the filler embankment foundation is mainly for uniform gradation and continuous filler, when the coarse particle of the filler is 83% ～ 84% content, the compaction effect is best. Using multiple linear regression, the grain size distribution characteristics of the fill

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Wehner, B., and A. Wiedensohler. "Long term measurements of submicrometer urban aerosols: statistical analysis for correlations with meteorological conditions and trace gases." Atmospheric Chemistry and Physics Discussions 2, no. 5 (2002): 1699–733. http://dx.doi.org/10.5194/acpd-2-1699-2002.

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Abstract. Long-term measurements (over 4 years) of particle number size distributions (submicrometer particles, 3--800 nm in diameter), trace gases (NO, NO2, and O3), and meteorological parameters (global radiation, wind speed and direction, atmospheric pressure, etc.) were taken in a moderately polluted site in the city of Leipzig (Germany). The resulting complex data set was analyzed with respect to seasonal, weekly, and diurnal variation of the submicrometer aerosol. Car traffic produced a peak in the number size distribution at around 30 nm particle diameter during morning rush hour on wee

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Wehner, B., and A. Wiedensohler. "Long term measurements of submicrometer urban aerosols: statistical analysis for correlations with meteorological conditions and trace gases." Atmospheric Chemistry and Physics 3, no. 3 (2003): 867–79. http://dx.doi.org/10.5194/acp-3-867-2003.

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Abstract. Long-term measurements (over 4 years) of particle number size distributions (submicrometer particles, 3-800 nm in diameter), trace gases (NO, NO2, and O3), and meteorological parameters (global radiation, wind speed and direction, atmospheric pressure, etc.) were taken in a moderately polluted site in the city of Leipzig (Germany). The resulting complex data set was analyzed with respect to seasonal, weekly, and diurnal variation of the submicrometer aerosol. Car traffic produced a peak in the number size distribution at around 20 nm particle diameter during morning rush hour on week

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Furbish, David Jon, Sarah G. W. Williams, Danica L. Roth, Tyler H. Doane, and Joshua J. Roering. "Rarefied particle motions on hillslopes – Part 2: Analysis." Earth Surface Dynamics 9, no. 3 (2021): 577–613. http://dx.doi.org/10.5194/esurf-9-577-2021.

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Abstract. We examine a theoretical formulation of the probabilistic physics of rarefied particle motions and deposition on rough hillslope surfaces using measurements of particle travel distances obtained from laboratory and field-based experiments, supplemented with high-speed imaging and audio recordings that highlight effects of particle–surface collisions. The formulation, presented in a companion paper (Furbish et al., 2021a), is based on a description of the kinetic energy balance of a cohort of particles treated as a rarefied granular gas, as well as a description of particle deposition

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Väänänen, R., E. M. Kyrö, T. Nieminen, et al. "Analysis of particle size distribution changes between three measurement sites in northern Scandinavia." Atmospheric Chemistry and Physics 13, no. 23 (2013): 11887–903. http://dx.doi.org/10.5194/acp-13-11887-2013.

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Abstract. We investigated atmospheric aerosol particle dynamics in a boreal forest zone in northern Scandinavia. We used aerosol number size distribution data measured with either a differential mobility particle sizer (DMPS) or scanning mobility particle sizer (SMPS) at three stations (Värriö, Pallas and Abisko), and combined these data with the HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) air mass trajectory analysis. We compared three approaches: analysis of new particle formation events, investigation of aerosol particle number size distributions during the air mass tr

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Liu, Jilong, Lingling Zhang, Qiang Fu, et al. "Spatial Variability of Soil Particle-Size Distribution Heterogeneity in Farmland." Transactions of the ASABE 61, no. 2 (2018): 591–601. http://dx.doi.org/10.13031/trans.12541.

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Abstract. The objective of this research was to reveal the spatial variability of soil particle-size distribution heterogeneity. The farmland (48 m × 48 m) used in this study is located in the black soil region of northeast China and was divided into sixty-four 6 m × 6 m squares for sampling. The soil particle-size distribution was measured with a Mastersizer 2000. Soil particle-size distribution heterogeneity, the spatial variability of soil particle-size distribution heterogeneity, and the relationships between soil particle-size distribution heterogeneity and the clay, silt, and sand conten

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Li, Meng, Xu Wang, Hao Yao, Henrik Saxén, and Yaowei Yu. "Analysis of Particle Size Distribution of Coke on Blast Furnace Belt Using Object Detection." Processes 10, no. 10 (2022): 1902. http://dx.doi.org/10.3390/pr10101902.

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Particle size distribution is an important parameter of metallurgical coke for use in blast furnaces. It is usually analyzed by traditional sieving methods, which cause delays and require maintenance. In this paper, a coke particle detection model was developed using a deep learning-based object detection algorithm (YOLOv3). The results were used to estimate the particle size distribution by a statistical method. Images of coke on the main conveyor belt of a blast furnace were acquired for model training and testing, and the particle size distribution determined by sieving was used for verific

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Manovski, P., P. Gulotta, C. M. de Silva, et al. "Particle tracer analysis for PIV experiments in a closed loop transonic wind tunnel." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 20 (July 11, 2022): 1–22. http://dx.doi.org/10.55037/lxlaser.20th.225.

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A performance study of several tracer particles for PIV has been conducted. The study included particle response time analysis of an oblique shock wave generated by a conical nose of a store model in a closed loop transonic wind tunnel, and in-situ measurements of the particle size distribution in a low-speed wind tunnel facility. From the oblique shock wave analysis, the estimated particle response time for different smoke materials and generator settings was of the order of 1.4 - 2.2 μs and the effective particle size was 0.58 - 0.85 μm, which was much larger than the measured geometric mean

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Gkatzelis, G. I., D. K. Papanastasiou, K. Florou, C. Kaltsonoudis, E. Louvaris, and S. N. Pandis. "Measurement of non-volatile particle number size distribution." Atmospheric Measurement Techniques Discussions 8, no. 6 (2015): 6355–93. http://dx.doi.org/10.5194/amtd-8-6355-2015.

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Abstract. An experimental methodology was developed to measure the non-volatile particle number concentration using a thermodenuder (TD). The TD was coupled with a high-resolution time-of-flight aerosol mass spectrometer, measuring the chemical composition and mass size distribution of the submicrometer aerosol and a scanning mobility particle sizer (SMPS) that provided the number size distribution of the aerosol in the range from 10 to 500 nm. The method was evaluated with a set of smog chamber experiments and achieved almost complete evaporation (> 98 %) of secondary organic as well as fr

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Jang, Kyung-Deok, Ada Ortega, Justin Ucol, Hao Du, and Nam-Soo Kim. "Effect of Lithium Ions on Copper Nanoparticle Size, Shape, and Distribution." Journal of Nanotechnology 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/469834.

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Copper nanoparticles were synthesized using lithium ions to increase the aqueous electrical conductivity of the solution and precisely control the size, shape, and size distribution of the particles. In this study, the conventional approach of increasing particle size by the concentration of copper ions and PGPPE in a copper chloride solution was compared to increasing the concentration of lithium chloride when the copper chloride concentration was held constant. Particle size and shape were characterized by TEM, and the size distribution of the particles at different concentrations was obtain

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Engler, C., D. Rose, B. Wehner, et al. "Size distributions of non-volatile particle residuals (D<sub><i>p</i></sub><800 nm) at a rural site in Germany and relation to air mass origin." Atmospheric Chemistry and Physics Discussions 6, no. 3 (2006): 5505–42. http://dx.doi.org/10.5194/acpd-6-5505-2006.

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Abstract. Atmospheric aerosol particle size distributions at a continental background site in Eastern Germany were examined for a one-year period. Particles were classified using a twin differential mobility particle sizer in a size range between 3 and 800 nm. As a novelty, every second measurement of this experiment involved the removal of volatile chemical compounds in a thermodenuder at 300°C. This concept allowed to quantify the number size distribution of non-volatile particle cores – primarily associated with elemental carbon, and to compare this to the original ambient size distribution

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Tomakova, R. A., D. V. Psarev, Y. A. Neruchev, and V. A. Starkov. "Particle Size Analysis of Nanopowders Using Neural Networks and Electron Microscopy." Proceedings of the Southwest State University. Series: IT Management, Computer Science, Computer Engineering. Medical Equipment Engineering 13, no. 4 (2024): 84–98. http://dx.doi.org/10.21869/2223-1536-2023-13-4-84-98.

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The purpose of the research is to develop an application capable of automatically determining the particle size distribution of nanopowder using neural network technology in order to simplify the process of preparing documentation during its manufacture.Methods. To determine the physical properties of nanopowders during their fabrication, it is necessary to analyze the particle size distribution. A methodology for determining the size distribution of nanopowder particles based on light neural networks is proposed. Images obtained by electron microscopy are used for processing, which allows to

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Bilal, Salma, Salma Gul, and Anwar-ul-Haq Ali Shah. "Calculation of particle size distribution of polyaniline salts using imagej." Journal of Scientific and Innovative Research 4, no. 1 (2015): 17–21. http://dx.doi.org/10.31254/jsir.2015.4105.

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The detailed analysis of particle size distribution is desirable in several technical fields that ma-nipulate granular/particulate materials including size reduction. This article describes the mani-pulation of scanning electron micrographs (SEM) of polyaniline (PANI) salts using ImageJ soft-ware. The PANI salts were prepared by two servable methods i.e. emulsion polymerizations and inverse emulsion polymerizations. 1,2 The effects of these synthesis routs on the particles shape and size distributions of the PANI salts were evaluated. Slight differences in the particle shapes were observed for

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Christiansen, Megan B., Charles O. Stanier, Dagen D. Hughes, et al. "Size-resolved aerosol at a Coastal Great Lakes Site: Impacts of new particle formation and lake spray." PLOS ONE 19, no. 4 (2024): e0300050. http://dx.doi.org/10.1371/journal.pone.0300050.

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The quantification of aerosol size distributions is crucial for understanding the climate and health impacts of aerosols, validating models, and identifying aerosol sources. This work provides one of the first continuous measurements of aerosol size distribution from 1.02 to 8671 nm near the shore of Lake Michigan. The data were collected during the Lake Michigan Ozone Study (LMOS 2017), a comprehensive air quality measurement campaign in May and June 2017. The time-resolved (2-min) size distribution are reported herein alongside meteorology, remotely sensed data, gravimetric filters, and gas-

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Engler, C., D. Rose, B. Wehner, et al. "Size distributions of non-volatile particle residuals (D<sub>p</sub><800 nm) at a rural site in Germany and relation to air mass origin." Atmospheric Chemistry and Physics 7, no. 22 (2007): 5785–802. http://dx.doi.org/10.5194/acp-7-5785-2007.

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Abstract. Atmospheric aerosol particle size distributions at a continental background site in Eastern Germany were examined for a one-year period. Particles were classified using a twin differential mobility particle sizer in a size range between 3 and 800 nm. As a novelty, every second measurement of this experiment involved the removal of volatile chemical compounds in a thermodenuder at 300°C. This concept allowed to quantify the number size distribution of non-volatile particle cores – primarily associated with elemental carbon, and to compare this to the original non-conditioned size dist

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WEI, DE-MING, FENG-LAN SHAO, JUN SONG, and YUN-FEI WANG. "CENTRALITY, SYSTEM SIZE AND ENERGY DEPENDENCE OF CHARGED PARTICLE PSEUDORAPIDITY DISTRIBUTION." International Journal of Modern Physics A 23, no. 32 (2008): 5217–27. http://dx.doi.org/10.1142/s0217751x08042560.

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Utilizing the three-fireball picture within the quark combination model, we study systematically the charged particle pseudorapidity distributions in both Au + Au and Cu + Cu collision systems as a function of collision centrality and energy, [Formula: see text], 62.4, 130 and 200 GeV, in the full pseudorapidity range. We find that: (i) the contribution from leading particles to dN ch /dη distributions increases with the decrease of the collision centrality and energy respectively; (ii) the number of leading particles is almost independent of the collision energy, but it does depend on the nuc

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Beddows, D. C. S., R. M. Harrison, D. C. Green, and G. W. Fuller. "Receptor modelling of both particle composition and size distribution from a background site in London, UK." Atmospheric Chemistry and Physics Discussions 15, no. 7 (2015): 10123–62. http://dx.doi.org/10.5194/acpd-15-10123-2015.

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Abstract. Positive Matrix Factorisation (PMF) analysis was applied to PM10 chemical composition and particle Number Size Distribution (NSD) data measured at an urban background site (North Kensington) in London, UK for the whole of 2011 and 2012. The PMF analyses revealed six and four factors respectively which described seven sources or aerosol types. These included Nucleation, Traffic, Diffuse Urban, Secondary, Fuel Oil, Marine and Non-Exhaust/Crustal sources. Diffuse Urban, Secondary and Traffic sources were identified by both the chemical composition and particle number size distribution a

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Beddows, D. C. S., R. M. Harrison, D. C. Green, and G. W. Fuller. "Receptor modelling of both particle composition and size distribution from a background site in London, UK." Atmospheric Chemistry and Physics 15, no. 17 (2015): 10107–25. http://dx.doi.org/10.5194/acp-15-10107-2015.

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Abstract. Positive matrix factorisation (PMF) analysis was applied to PM10 chemical composition and particle number size distribution (NSD) data measured at an urban background site (North Kensington) in London, UK, for the whole of 2011 and 2012. The PMF analyses for these 2 years revealed six and four factors respectively which described seven sources or aerosol types. These included nucleation, traffic, urban background, secondary, fuel oil, marine and non-exhaust/crustal sources. Urban background, secondary and traffic sources were identified by both the chemical composition and particle N

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