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Pavel Élesztos, Ladislav Écsi, Roland Janco, Jana Gabková
Pág. 15 - 19
This article is devoted to the solution of the thermal field of a particle for Bi > 0 with an ideal spherical shape and the behavior of the temperature in the fluid phase with countercurrent contact.After establishing the underlying simplified assumpt...
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Bo-Wei Li, Min-Cheng Zhong and Feng Ji
Laser induced Marangoni convection can be used to accumulate micro-particles. In this paper, a method is developed to control and accumulate the light absorbing particles dispersed in a thin solution layer. The particles are irradiated by a focused laser...
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Satheeskumar Navaratnam, Kate Nguyen, Kajanan Selvaranjan, Guomin Zhang, Priyan Mendis and Lu Aye
The COVID-19 pandemic forced the accessibility, social gathering, lifestyle, and working environment to be changed to reduce the infection. Coronavirus spreads between people in several different ways. Small liquid particles (aerosols, respiratory drople...
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Jiao Qu, Juanjuan Liu and Qi Zhu
Developing an efficient approach to improve the luminescence of the phosphors without heating processing is a challenge, but attracts much attention. In the present paper, prismatic microcrystals of RE4O(OH)9NO3 (RE = Y, Eu) were synthesized by a hydroth...
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Adel A. Fahmy, Ali A. Abdel Aziz
Pág. 283 - 292
The present work aims to study the effect of nano-particles volume fraction of nano-fluid on the heat transfer during pool boiling with different values of heat flux. The concentration ratios by volume in demineralized water are taken as 0.02 %, 0.2...
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Muhammad Akbar Malik, Manas Sarkar, Shilang Xu and Qinghua Li
This exertion introduces polyvinyl alcohol fiber/silica nanoparticles (poly vinyl alcohol (PVA)/SiO2 NPs) in the fly ash-based geopolymer at ambient curing temperature. The present study aims at investigating the structural properties (compressive, bond ...
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Stefania Squizzato, Mauro Masiol, Fereshteh Emami, David C. Chalupa, Mark J. Utell, David Q. Rich and Philip K. Hopke
The northeastern United States has experienced significant emissions reductions in the last two decades leading to a decrease in PM2.5, major gaseous pollutants (SO2, CO, NOx) and ultrafine particles (UFPs) concentrations. Emissions controls were impleme...
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Lina Zhao, Zhi Zhang, Yugang Duan, Hong Cui and Yong Gao
Yttria-stabilized zirconia (YSZ) hollow sphere (HS) powder is a novel potential feedstock material for the plasma spraying of next generation advanced thermal barrier coatings with low thermal conductivity and high sintering resistibility. In this study,...
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Gi-Won Shin, Jae-Hyeon Kim, Sun-Hee Lee, In-Young Bang, Ji-Hwan Kim, Yeon-Soo Park, Hee-Tae Kwon, Woo-Jae Kim and Gi-Ching Kwon
Upon reentering the Earth?s atmosphere from space, a reentry vehicle becomes enshrouded in an ionization layer. This layer is known as the reentry plasma sheath and is caused by aerodynamic heating. Owing to the oscillation of charged particles in the re...
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Nadir Yilmaz, Burl Donaldson and Walt Gill
Aluminum particle ignition behavior in open atmosphere rocket propellants fires is of particular interest for preventing accidents for rockets carrying high-value payloads. For nominal motor pressures, aluminum particles oxidize to aluminum oxide in the ...
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Maria Barbara Rózanska, Patrycja Kokolus, Jakub Królak, Patrycja Jankowska, Agata Osos, Magda Romanowska, Lukasz Szala, Przemyslaw Lukasz Kowalczewski, Jacek Lewandowicz, Lukasz Masewicz, Hanna Maria Baranowska and Sylwia Mildner-Szkudlarz
The present study aimed to evaluate the effect of the extrusion process and particle size on the properties of rice flour (microstructure, pasting properties), gluten-free dough (rheological properties), and bread (texture, specific volume, water absorpt...
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Guobiao Cai, Lihui Liu, Bijiao He, Guilong Ling, Huiyan Weng and Weizong Wang
Chemical and electrical thrusters are generally utilized to control the attitude and orbit of spacecraft in aerospace. When they are firing, the exhaust expands into the vacuum environment, known as the vacuum plume. The plume flow can collide with space...
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Alexander Misol, Alejandro Jiménez and Francisco M. Labajos
Amines with two carbon atoms in the organic chain [ethylamine (EA), diethylamine (DEA), triethylamine (TEA)] have been used as precipitant agents to obtain a hydrotalcite-like compound with Zn (II) and Al (III) as layered cations and with nitrate anions ...
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Nikolai Berdnikov, Pavel Kepezhinskas, Natalia Konovalova and Nikita Kepezhinskas
Gold is typically transported by mafic and evolved magmas into the upper crust to be deposited in shallow oxidized porphyry and epithermal environments. However, the magmatic behavior of gold is still poorly understood and warrants further attention. Add...
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Dmitro Starokadomsky,Dmitry Rassokhin,Anatoly Ishchenko,Nadia Sigareva,Maria Reshetnyk
Pág. 73 - 80
This paper reports the results of studying epoxy compositions with gypsum taken in the form of dispersed powders in the original and water-hardened form. The exact pattern has been shown in the way the introduction of a gypsum additive in the amount of 5...
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Viacheslav Borysov,Ihor Hevko,Oleksii Torubara,Svitlana Borysova,Dmitry Milko,Dmytro Zhuravel,Bohdan Tsymbal,Viacheslav Bratishko,Kyrylo Samoichuk,Yulia Postol
Pág. 24 - 29
The physical and chemical properties of products from the carbon-thermal reduction of oxide chromo-containing ore raw materials have been investigated. This is necessary to determine the parameters that reduce the loss of Cr in the processing of ore mate...
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Elisa Fiume, Gianpaolo Serino, Cristina Bignardi, Enrica Verné and Francesco Baino
The intrinsic brittleness of bioactive glasses (BGs) is one of the main barriers to the widespread use of three-dimensional porous BG-derived bone grafts (scaffolds) in clinical practice. Among all the available strategies for improving the mechanical pr...
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Blanca Castells, Isabel Amez, Ljiljana Medic and Javier García Torrent
Dust explosions and fires pose an industrial safety problem, due to the human and material losses caused by them. As many fuel processes and material transport generate powder particles, the effect of granulometry in different flammability properties has...
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Nikolai Maliavski,Olga Zhuravlova
Pág. 41 - 48
A universal calculation model for theoretical description of structural and physicochemical properties of aqueous solutions of modified silicates with the involvement of complexing agents is offered. The model takes into consideration three types o...
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Bruce F. Moffett, Tom C. J. Hill and Paul J. DeMott
Ice nucleating particles (INPs) are rare among atmospheric aerosols. However, through their ability to induce freezing of cloud droplets in cold clouds, they affect cloud lifetime, cloud albedo, and the efficiency and distribution of precipitation. While...
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