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Shun Liu, Hongyi Lu, Bin Zhang, Yucheng Yang and Doudou Sang
The presence of the erosive burning effect during the operation of a solid rocket motor (SRM) is one of the most important factors affecting the proper operation of the motor. To solve the effects of the operating process of the motor under erosive burni...
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He Huang, Qiang Cheng and Lei Zheng
This article can be applied to deployable reflector antennas in aerospace engineering.
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Solid waste management in developing cities is a threat to water and food security. The final disposal option for solid wastes is usually landfill sites. Possible contaminants and their impact on surface and groundwater, and soil quality, at the northern...
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Milan Helexa, Ján Kovác, Jozef Krilek, Ján Melichercík and Tomá? Kuvik
The article deals with measuring the rolling resistance of two tires Mitas TS04 6.00-16 6PR and Mitas TS05 10.0/75-15.3 10PR on a concrete surface. The measurement was performed in a soil test channel which had to be adjusted for the given purpose. The t...
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Oleg Markov,Yurii Diachenko,Leila Aliieva,Serhii Zharikov,Natalia Hrudkina,Volodymyr Bondarenko,Mykhailo Pohorielov
Pág. 14 - 21
The features of obtaining coatings on carbon steel, structural steel St 3 are studied during diffusion metallization ? simultaneous saturation of steel with boron, chromium and aluminum (boron chromium aluminizing), without the use of special heat t...
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Frantisek Prochaska, Karel Nejezchleb, Jiri Benes, Ondrej Matousek and David Tomka
3D subaperture surface shape correction of YAG laser rods for solid-state laser production.
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Gene Yang, Wonsang Jung, Sung-Jin Ahn and Dongkyu Lee
Achieving the fast oxygen reduction reaction (ORR) kinetics at the cathode of solid oxide fuel cells (SOFCs) is indispensable to enhance the efficiency of SOFCs at intermediate temperatures. Mixed ionic and electronic conducting (MIEC) oxides such as ABO...
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Behnam Partopour and Anthony G. Dixon
Computational fluid dynamics (CFD) is coupled with reaction and transport in a micro-scale pellet simulation to study CO oxidation over Rh/Al2O3 catalyst. The macro-pores are explicitly modeled to study the interaction of these phenomena in both the soli...
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Hongwei An, Xiaoyuan Hu, Scott Draper, Liang Cheng, Binsar Lubis and Mehrdad Kimiaei
A physical model testing method to determine the hydrodynamic force coefficients of an object is proposed and applied to an articulated concrete mattress placed on a flat surface under steady current condition. The test setup, which comprises of a pulley...
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Jorge Luiz Audibert, Fernando Fernandes
Pág. 45 - 52
Trials conducted in controlled landfillsor dumps are still incipient in Brazil. This paper aimed to qualify and quantify the emission of biogas in the landfill of Londrina, Paraná State. Measurements were performed by three types of tests: static closed ...
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Qiang Lu, Zhi-Bo Zhang, Hang-Tao Liao, Xiao-Chu Yang and Chang-Qing Dong
Bio-oil from fast pyrolysis of biomass is a low-grade liquid fuel, which can be upgraded through the emulsification with diesel oil. In this study, we prepared two rice husk bio-oil samples with different solid char contents and three bio-oil/diesel-oil ...
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Cong Wang and Chengchen Xu
Chemical doping of boron atoms is essential to modify the electrical properties of graphene films. The synthesis of large-scale boron-doped graphene with high uniformity and good electrical properties is still a great challenge. To improve the quality an...
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Je-Hun Jang, Brian A. Dempsey, William D. Burgos
Pág. 2269 - 2277
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Sang-Tae Park, Jong-Yong Lee and Sang-Keun Oh
This study analyzed if process oil and synthetic rubber, the main materials of the previous synthetic polymerized rubber gel waterproofing materials (P-SPRG), can be replaced with waste oil and waste rubber to be recycled as raw waterproofing materials a...
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Paul-Mark DiFrancesco, David A. Bonneau and D. Jean Hutchinson
Key to the quantification of rockfall hazard is an understanding of its magnitude-frequency behaviour. Remote sensing has allowed for the accurate observation of rockfall activity, with methods being developed for digitally assembling the monitored occur...
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Hani Alhazmi and Rasim Guldiken
The propagation of surface acoustic waves over a solid plate is highly influenced by the presence of liquid media on the surface. At the solid?liquid interface, a leaky Rayleigh wave radiates energy into the liquid, causing a signification attenuation of...
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Erika J. Foster, Emily J. Fogle and M. Francesca Cotrufo
Extracellular enzymes catalyze biogeochemical reactions in soil, cycling carbon and nutrients in agricultural systems. Enzymes respond quickly to soil management, including organic amendment inputs, such as biochar, a charcoal-like solid byproduct of bio...
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Haixuan Ye, Yang Chen and Kevin Maki
For numerical simulations of ship and offshore hydrodynamic problems, it is challenging to model the interaction between the free surface and moving complex geometries. This paper proposes a discrete-forcing immersed boundary method (IBM) to efficiently ...
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Bing Li, Hao Peng and Jing Guo
Phosphogypsum is a kind of solid waste produced in wet process of producing phosphoric acid, which affects the filtration rate and water content of phosphogypsum. The effects of single surfactant sodium dodecyl sulfate (SDS), sodium dodecylbenzene sulfon...
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Guangwei Zhang, Deyuan Li, Ning Zhang, Nannan Zhang and Sihua Duan
This paper describes thermal spray techniques for making hard coatings on bushing and sleeve component surfaces. Specifically, plasma-arc welding was used to produce 5-mm thick Co-Cr alloy welding overlays on the bushing, while a high-velocity oxy-fuel s...
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