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Yadong Zheng, Lianying Zhang, Peng Wu, Xiaoqian Guo, Ming Li and Fuqiang Zhu
The physical and mechanical properties of rocks change significantly after being subjected to high temperatures, which poses safety hazards to underground projects such as coal underground gasification. In order to investigate the effect of temperature o...
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Yi-Seo Min, Yeon-Soo Kim, Ryu-Gap Lim, Taek-Jin Kim, Yong-Joo Kim and Wan-Soo Kim
The load factor (LF) of a tractor represents the ratio of actual engine power and rated engine power, and is an important indicator directly used in calculating national air pollutant emissions. Currently, in the Republic of Korea, a fixed value of 0.48 ...
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José L. Pérez-Díaz, Ognyan Ivanov, Zahary Peshev, Marco A. Álvarez-Valenzuela, Ignacio Valiente-Blanco, Tsvetina Evgenieva, Tanja Dreischuh, Orlin Gueorguiev, Peter V. Todorov and Ashok Vaseashta
This work presents a selective overview of natural fogs in terms of fog types, forms and states of occurrence, physical, micro-physical, chemical and dynamic properties, basic characterizing parameters, etc. In focus are related achievements and contribu...
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D. S. Agustawijaya
Pág. pp. 9 - 14
Soft rock is a term that usually refers to a rock material with a uniaxial compressive strength (UCS) less than 20 MPa. This low strength range might be influenced by physical characteristics, such as size, saturation, weathering and mineral content. A n...
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Nils Reeh, Gerd Manthei and Peter J. Klar
To depict the pump power characteristics of radial centrifugal pumps, a physical model was developed. The model relies on established empirical equations. To parameterize the model for specific pumps, physically interpretable tuning factors were integrat...
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Viktor Volkov,Natalia Makoyed,Yuliia Loboda,Oksana Sokolova
Pág. 54 - 65
Theoretically, the combustion stability of solid fuel, which during the combustion process is decomposed according to the ?solid phase ? liquid phase ? gas? scheme, is investigated. The physical and mathematical models for t...
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Zhenshan Xu, Ebenezer Otoo, Yongping Chen and Hongwei Ding
The multiport diffuser effluent discharge facilities constructed beneath the coastal waters were simplified in the laboratory as twin buoyant jets in a wavy cross-flow environment. The near-field flow structure of twin jets was studied by series of exper...
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Victor V. Kuzenov, Sergei V. Ryzhkov and Aleksey Yu. Varaksin
This paper provides an overview of modern research on magnetoplasma methods of influencing gas-dynamic and plasma flows. The main physical mechanisms that control the interaction of plasma discharges with gaseous moving media are indicated. The ways of o...
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Guoqing Zeng, Jintao Wang, Lei Zhang, Xuyang Xie, Xuefeng Wang and Guobing Chen
The marine steam power system includes a large amount of thermal equipment; meanwhile, the marine environment is harsh and the working conditions change frequently. Operation management involves many disciplines, such as heat, machinery, control, electri...
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Osman Gencel, Turhan Bilir, Zeynep Bademler and Togay Ozbakkaloglu
With the development of new cement-based raw materials, foaming agents and fillers used for special applications of foam concrete, the use of foam concretes has become widespread. Foam concrete is a type of concrete that stands out with its lightness, wa...
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Wenlin Chen, Jianjun Wu and Chunhui Li
This study investigated the flow distortion effect of the header on the measurement accuracy of the ultrasonic gas flowmeter by experiments and CFD, and the physical mechanism of characteristic parameters on measurement accuracy was explored.
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Roman Novak
Pág. 269 - 278
In telecommunication channel modelling the wavelength is small compared to the physical features of interest, therefore deterministic ray tracing techniques provide solutions that are more efficient, faster and still within time constraints than current ...
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Ben Wang, Xiuhua Fu, Shigeng Song, Hin On Chu, Desmond Gibson, Cheng Li, Yongjing Shi and Zhentao Wu
Optimization of thin film uniformity is an important aspect for large-area coatings, particularly for optical coatings where error tolerances can be of the order of nanometers. Physical vapor deposition is a widely used technique for producing thin films...
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Jan Kolínský, Tomá? Prá?il, Ladislav Socha, Jana Svi?elová, Karel Gryc, Josef Häusler and Martin Dvorák
The present paper describes a comparison of the efficiency of different types of rotors used in the refining of aluminium melt at a foundry degassing unit (FDU). Physical modelling was used to obtain data for six different rotor types under defined exper...
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Arthur Abinader Vasconcelos, Thomas Len, Alex de Nazaré de Oliveira, Ana Alice Farias da Costa, Allan Rodrigo da Silva Souza, Carlos Emmerson Ferreira da Costa, Rafael Luque, Geraldo Narciso da Rocha Filho, Renata Coelho Rodrigues Noronha and Luís Adriano Santos do Nascimento
This review provides a state-of-the-art summary of distributed zeolite technology, as well as identifying strategies to further promote the absorption of these materials in various areas of study. Zeolites are materials that can be synthesized or found i...
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Rujuan Lu, Liang Wu and Deping Chu
Exploring the factors influencing urban vibrancy can help policy development and advance urban planning and sustainable development. Previous studies have typically focused on the effects of physical environmental factors (e.g., built environment, urban ...
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Federico Ricci, Luca Petrucci, Francesco Mariani and Carlo Nazareno Grimaldi
The control of internal combustion engines is becoming increasingly challenging to the customer?s requirements for growing performance and ever-stringent emission regulations. Therefore, significant computational efforts are required to manage the large ...
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José Fortes Lopes, Carina Lurdes Lopes and João Miguel Dias
Extreme weather events (EWEs) represent meteorological hazards for coastal lagoon hydrodynamics, of which intensity and frequency are increasing over the last decades as a consequence of climate changes. The imbalances they generated should affect primar...
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Fedor Pertsevoy,Olena Koshel,Sergei Sabadash,Mykola Mashkin,Valentyna Mohutova,Vadym Volokh
Pág. 25 - 31
Solving the problem of detecting counterfeiting in confectionery requires appropriate identification methods and is of paramount importance in the list of measures aimed at achieving food safety and quality.The following infrared spectra of the samples w...
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Giorgio Baiamonte
In the field of hydrology, stage?discharge relationships are commonly used to estimate the discharge at the basin outlet or by experimental plots. Many experimental efforts have been made in order to derive stage?discharge relationships, according to the...
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