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You searched for: Subject "particle size" Remove constraint Subject: "particle size"
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1. An investigation into the effect of particle size distribution on the fluidization behavior of Group C and Group A particles

Author:
Weihong Li; Jiaying Wang; Yandaizi Zhou; Yuanyuan Shao; Hui Zhang; Jesse Zhu
Source:
Powder technology 2022 v.398 pp. 117142
ISSN:
0032-5910
Subject:
particle size; particle size distribution,   etc   ; surface area;     Show all 3 Subject
Abstract:
... Group C particles possess great potential in gas-phase catalytic reactions due to the large specific surface area. This work focuses on the effects of particle size distribution (PSD), average particle diameter, and addition of nano-additive on the flowability and fluidization quality of Group C and Group A powders. Virgin Group C powders are hard to fluidize, but with the so-called nano-modulatio ...
DOI:
10.1016/j.powtec.2022.117142

2. A breakage matrix methodology to predict particle size evolution of calcareous sands

Author:
Sheng Zhang; Jia-Lu Wang; Chen-Xi Tong
Source:
Powder technology 2022 v.407 pp. 117626
ISSN:
0032-5910
Subject:
particle size; particle size distribution,   etc   ; mechanical properties; models; soil; technology;     Show all 6 Subjects
Abstract:
... Breakage-induced evolution of particle size distribution (PSD) will greatly affect the mechanical behavior of granular materials, and has been an important concern in geotechnical engineering. This paper presents a breakage matrix approach to investigate the evolution of PSD with detailed breakage information of each single-sized particles via conducting one-dimensional compression tests on dyed c ...
DOI:
10.1016/j.powtec.2022.117626

3. Evaluation of the Potential of Single Particle ICP-MS for the Accurate Measurement of the Number Concentration of AuNPs of Different Sizes and Coatings

Author:
Antonio R. Montoro Bustos; Karen E. Murphy; Michael R. Winchester
Source:
Analytical chemistry 2022 v.94 no.7 pp. 3091-3102
ISSN:
1520-6882
Subject:
particle size; particle size distribution,   etc   ; analytical chemistry; calibration; nanogold; uncertainty;     Show all 6 Subjects
Abstract:
... Single particle inductively coupled plasma-mass spectrometry (spICP-MS) is an emerging technique that is capable of simultaneous measurement of the size and number concentration of metal-containing nanoparticles (NPs) at environmentally relevant levels. Although spICP-MS is widely applied to different fields, challenges remain in obtaining accurate and consistent particle number concentration (PNC ...
DOI:
10.1021/acs.analchem.1c04140

4. Bulk densities and flowability of mono-sized, binary mixtures and particle size distributions of glass spheres

Author:
Haim Kalman
Source:
Powder technology 2022 v.397 pp. 117086
ISSN:
0032-5910
Subject:
particle size; particle size distribution,   etc   ; angle of repose; equations; glass; technology;     Show all 6 Subjects
Abstract:
... The angle of repose, angle of tilting, and Hausner ratio are frequently used to estimate the flowability of a particulate material. Also, the free and tapped densities are commonly used for design and operating of particulate solids handling systems. In this study, these properties were determined for mono-sized, binary mixtures and particle size distributions of spherical glass. It was found, as ...
DOI:
10.1016/j.powtec.2021.117086

5. In-situ imaging of particle size distribution in an industrial-scale calcination reactor using micro-focusing particle shadowgraphy

Author:
Shipu Han; Zhiwei Sun; Claire de Jacobi du Vallon; Tim Collins; Matthew Boot-Handford; Mark G. Sceats; Zhao Feng Tian; Graham J. Nathan
Source:
Powder technology 2022 v.404 pp. 117459
ISSN:
0032-5910
Subject:
particle size; particle size distribution,   etc   ; algorithms; carbon dioxide; cement; production technology;     Show all 6 Subjects
Abstract:
... We present a novel demonstration of in-situ particle size measurement in a high-temperature, industrial-scale reactor for lime-calcination using micro-focusing particle shadowgraphy in particle-laden flows with volume fraction up to 0.02 and an optical path length of 670 mm. This non-intrusive method was demonstrated to provide reliable in-situ measurement of both particle size distribution (PSD) ...
DOI:
10.1016/j.powtec.2022.117459

6. The modification of the Kozeny-Carman equation through the lattice Boltzmann simulation and experimental verification

Author:
Peijie Yin; Huihui Song; Hairui Ma; Wuchao Yang; Zhi He; Xiaonan Zhu
Source:
Journal of hydrology 2022 v.609 pp. 127738
ISSN:
0022-1694
Subject:
particle size; particle size distribution,   etc   ; equations; glass; hydrology; mathematical models; permeability; porosity;     Show all 8 Subjects
Abstract:
... In this paper, the numerical simulation based on the lattice Boltzmann method (LBM) and experimental studies are conducted to investigate the permeability of porous media with sphere packing. The accuracy of LBM is verified through the comparison of theoretical solutions and the numerical result of flat channel flows. The resolution and the size of representative element volume used for simulation ...
DOI:
10.1016/j.jhydrol.2022.127738

7. Effect of reduction pretreatments on PdAg/Al2O3 for HCHO and CO oxidation

Author:
Liwei Meng; Xue Han; Lian Yu; Yafei Wang
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 371-378
ISSN:
1001-0742
Subject:
particle size,   etc   ; X-ray diffraction; X-ray photoelectron spectroscopy; active oxygen species; catalytic activity; desorption; oxidation; oxygen; temperature; transmission electron microscopy; China;     Show all 11 Subjects
Abstract:
... PdAg/Al₂O₃ were pretreated by CO and H₂ reduction pretreatments, respectively. The reduced catalysts were tested for HCHO and CO oxidation and characterized by Brunner Emmet Teller (BET), X-ray diffraction (XRD), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS) and oxygen temperature programmed desorption (O₂-TPD). These results indicate that the pretreatments have ef ...
DOI:
10.1016/j.jes.2021.08.051

8. Improved Crystallization of Ampicillin Trihydrate Based on the Use of Ultrasound

Author:
Harshad D. Awari; Sarvesh S. Sabnis; Parag R. Gogate
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.6 pp. 2538-2547
ISSN:
1520-5045
Subject:
particle size; particle size distribution,   etc   ; ampicillin; bioavailability; crystallization; process design; sonication; ultrasonic treatment; ultrasonics;     Show all 9 Subjects
Abstract:
... Ampicillin trihydrate (AT) is a widely used antibiotic and it is of utmost importance to control the particle size distribution, mean size, and morphology so as to achieve faster dissolution and enhanced bioavailability. In present work, ultrasound-assisted cooling crystallization of ampicillin trihydrate was studied with an objective to understand the effect of various ultrasonic parameters like ...
DOI:
10.1021/acs.iecr.1c03804

9. Revisiting the Theory of Coagulation of Colloidal Dispersions: An Improved Expression for the Stability Ratio

Author:
Longcheng Liu; Shuo Meng; Chunguang Li; Yongmei Li
Source:
Langmuir 2022 v.38 no.3 pp. 1131-1140
ISSN:
1520-5827
Subject:
particle size,   etc   ; coagulation; electrolytes;     Show all 3 Subjects
Abstract:
... The stability of a colloidal dispersion has long been expressed in terms of the stability ratio. Based on the available theories of coagulation of colloidal dispersions, a novel expression, complying with the classical definition, is developed for the stability ratio. It accounts for the contributions of both primary and secondary minimum coagulations to the overall rate of coagulations. In additi ...
DOI:
10.1021/acs.langmuir.1c02790

10. Scaling up studies for mixing of granular materials in rotating drums

Author:
Angga Pratama Herman; Zongyan Zhou; Jieqing Gan; Aibing Yu
Source:
Powder technology 2022 v.403 pp. 117408
ISSN:
0032-5910
Subject:
particle size,   etc   ; prediction; technology;     Show all 3 Subjects
Abstract:
... This study investigates the mixing of granular materials for rotating drums of different volumes which vary from 6.28 L to 402.12 L. Two groups of case studies are considered: Group I (constant particle diameter, d) and Group II (constant ratio of drum diameter to particle diameter, D/d). The results show that for Group I, the mixing performance deteriorates with drum size increasing. A correlatio ...
DOI:
10.1016/j.powtec.2022.117408

11. Ageing and fragmentation of marine microplastics

Author:
Carmen Sorasan; Carlos Edo; Miguel González-Pleiter; Francisca Fernández-Piñas; Francisco Leganés; Antonio Rodríguez; Roberto Rosal
Source:
Science of the total environment 2022 v.827 pp. 154438
ISSN:
0048-9697
Subject:
particle size; particle size distribution,   etc   ; environment; flow cytometry; irradiation; marine debris; nanoplastics; polyethylene; polypropylenes; polystyrenes; risk;     Show all 11 Subjects
Abstract:
... The generation of small fragments from the environmental ageing of microplastics (MPs) is still a poorly known process. This work addresses the fragmentation of MPs obtained from marine debris consisting of polyethylene and polypropylene (PE and PP in environmental mixture) and polystyrene (PS) after exposure to accelerated ageing by irradiation and mechanical stirring. Number particle size distri ...
DOI:
10.1016/j.scitotenv.2022.154438

12. Contribution of the Initially Entangled State and Particle Size to the Sintering Kinetics of UHMWPE

Author:
Handing Wang; Xiang Yan; Xin Tang; Yulong Ma; Xiaoqiang Fan; Wei Li; Wei Yu; Jingdai Wang; Yongrong Yang
Source:
Macromolecules 2022 v.55 no.4 pp. 1310-1320
ISSN:
1520-5835
Subject:
particle size,   etc   ; polyethylene; thermal stability;     Show all 3 Subjects
Abstract:
... Nascent particles of ultrahigh-molecular-weight polyethylene (UHMWPE) with different entangled states and particle sizes have been processed by means of sintering. The chain entanglement formation of the sintered UHMWPE was investigated using a small-amplitude oscillatory shear measurement, where the contribution of the initially entangled state and particle size to the entanglement formation of l ...
DOI:
10.1021/acs.macromol.1c02058

13. Effective thermal conductivities of metal powders for additive manufacturing

Author:
Ming Liu; Louis N.S. Chiu; Haopeng Shen; Xiya Fang; Zhong Tao; Aijun Huang; Chris Davies; Xinhua Wu; Wenyi Yan
Source:
Powder technology 2022 v.401 pp. 117323
ISSN:
0032-5910
Subject:
particle size,   etc   ; temperature; thermal conductivity;     Show all 3 Subjects
Abstract:
... Effective thermal conductivities (ETCs) of five commonly used metal powders in additive manufacturing have been measured at temperatures up to 750 °C. The ETCs of Al-Mn-Sc and Ti-6Al-4V powders with different particle sizes are also investigated. When the temperature is lower than 300 °C, the ETC of metal powders is insensitive to the temperature and material. In contrast, when the temperature exc ...
DOI:
10.1016/j.powtec.2022.117323

14. One-step synthesis of lead zirconate titanate particles using a solid-state reaction method

Author:
Darmawan Hidayat; Mohammad Taufik; Setianto Setianto
Source:
Heliyon 2022 v.8 no.3 pp. e09125
ISSN:
2405-8440
Subject:
particle size,   etc   ; crystallites; furnaces; lead;     Show all 4 Subjects
Abstract:
... This study aims to determine the one-step synthesis of lead zirconate titanate (PbZr₍₁₋ₓ₎TiₓO₃; PZT) particles, using a solid-state reaction method. These particles were synthesized at x of 0.48, using a solid-state reaction (SSR) method at various operating temperatures of 700–1000 °C. Before the reaction in a muffle furnace, the precursor powder was shaker milled for 2 h. The structural analysis ...
DOI:
10.1016/j.heliyon.2022.e09125

15. Potential of fertilizer segregation during application using spinner disc spreader

Author:
Ravinder K. Thaper; John P. Fulton; Timothy P. McDonald; Oladiran O. Fasina
Source:
Precision agriculture 2022 v.23 no.1 pp. 83-100
ISSN:
1385-2256
Subject:
particle size,   etc   ; fertilizers; precision agriculture;     Show all 3 Subjects
Abstract:
... Granular blended fertilizers are commonly applied using spinner disc spreaders in the U.S. with recent advances including wider spreads. Today, uniformity of spread is important as growers and custom applicators attempt to implement site-specific management and utilize global navigation satellite systems (GNSS)-based guidance systems which permit equipment to follow the same field traverses over t ...
DOI:
10.1007/s11119-021-09828-5

16. Special Issue on “Synthesis and Characterization of Nanomaterials”

Author:
Ioannis A. Kartsonakis
Source:
Fibers 2022 v.10 no.1 pp. -
ISSN:
2079-6439
Subject:
particle size distribution,   etc   ; manufacturing; nanomaterials;     Show all 3 Subjects
Abstract:
... Nanomaterial is defined a natural, incidental or manufactured material containing particles, in an unbound state, as an aggregate, or as an agglomerate, and where, for 50% or more of the particles in the number size distribution, one or more external dimensions is in the size range 1–100 nm [...] ...
DOI:
10.3390/fib10010009

17. Structural Color Spectral Response of Dense Structures of Discoidal Particles Generated by Evaporative Assembly

Author:
Tianyu Liu; Fengyi Gao; Sharon C. Glotzer; Michael J. Solomon
Source:
Journal of physical chemistry 2022 v.126 no.6 pp. 1315-1324
ISSN:
1520-5207
Subject:
particle size,   etc   ; anisotropy; color; evaporation;     Show all 4 Subjects
Abstract:
... Structural color─optical response due to light diffraction or scattering from submicrometer-scale structures─is a promising means for sustainable coloration. To expand the functionality of structural color, we introduce discoidal shape anisotropy into colloidal particles and characterize how structural color reflection can be engineered. Uniaxial compression of spheres is used to prepare discoids ...
DOI:
10.1021/acs.jpcb.1c10015

18. The effect of particle size and mass ratio on the mechanical response of Al/PTFE/SiC composite with a 2³ factorial design

Author:
Ruiqi Wang; Junyi Huang; Qiang Liu; Shuangzhang Wu; Jiaxiang Wu; Xinxin Ren; Yuchun Li
Source:
RSC advances 2022 v.12 no.5 pp. 2810-2819
ISSN:
2046-2069
Subject:
particle size,   etc   ; compression strength; thermodynamics;     Show all 3 Subjects
Abstract:
... In order to study the effects of different SiC mass ratios, SiC particle sizes and Al particle sizes on the mechanical response of Al/PTFE/SiC, an experiment was conducted through the full 2³ factorial design. The specimens were prepared by means of molding-vacuum sintering, while the mechanical response of the materials was measured through quasi-static compression. The regression models between ...
DOI:
10.1039/d1ra07985a

19. In vitro-in vivo correlation of PLGA microspheres: Effect of polymer source variation and temperature

Author:
Bo Wan; Quanying Bao; Diane J. Burgess
Source:
Journal of controlled release 2022 v.347 pp. 347-355
ISSN:
0168-3659
Subject:
particle size; particle size distribution,   etc   ; absorption; animal models; body temperature; drugs; humans; microparticles; polymers; porosity; rabbits; viscosity;     Show all 12 Subjects
Abstract:
... Development of Level A in vitro-in vivo correlations (IVIVCs) remains challenging for complex long-acting parenterals, such as poly(lactic-co-glycolic acid) PLGA microspheres. The nature of the PLGA polymer excipient has a dominant influence on the performance of PLGA microspheres. These microsphere systems typically exhibit multiphasic in vitro/in vivo release/absorption characteristics and may a ...
DOI:
10.1016/j.jconrel.2022.05.014

20. Emulsifying properties of different soy hull pectin polysaccharides and application in mayonnaise

Author:
Jun Li; Huaitian Cui; Xinyue Xu; Jiayi Li; Miaomiao Lu; Xijie Guan; Danshi Zhu; He Liu
Source:
Food science and biotechnology 2022 v.31 no.6 pp. 699-710
ISSN:
1226-7708
Subject:
particle size; particle size distribution,   etc   ; biotechnology; citric acid; emulsifying; emulsions; food science; gels; mayonnaise; pectins; sodium citrate; soybeans;     Show all 12 Subjects
Abstract:
... Soy hull pectic polysaccharide (SHPP) is a kind of biological macromolecule prepared from soy hull, which has certain thickening and gel properties. In present study, SHPP was extracted with citric acid and sodium citrate from soybean hulls under the assistance of microwave, respectively. SHPPs were then compared with commercial pectin polysaccharide to test their emulsification ability. The emuls ...
DOI:
10.1007/s10068-022-01083-2