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Gudeta Berhanu Benti, Jan-Olov Aidanpää and Rolf Gustavsson
In 2015, a 45 MW vertical hydropower machine exhibited excessive vibration after refurbishment. Measurements revealed a substantial bearing clearance at the lower generator guide bearing. Consequently, the bearing was unable to generate sufficient opposi...
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Omer W. Taha and Yefa Hu
As an essential enabling technology to realize advanced concepts such as digitization, intelligence, and service, information technology plays a critical role in shaping modern society and driving innovation across various industries and domains. The con...
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Jiancong Liu, Manhong Ji, Jiabao Qin, Jia Zhu and Suiyi Zhu
Waste oil scum is commonly discharged during the air flotation process at oil-bearing wastewater treatment plants and disposed as an additive in cement kilns and/or furnaces. Herein, it was mixed with a magnetite-rich waste sludge and then completely rec...
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Di Lu, Qin Tang, Dehuan Yang, Rongtao Yan, Yun Chen and Shuai Tao
Stability condition is of critical importance for methane hydrate exploitation, transportation, and reserves. This study measured the stability conditions of methane hydrate in fine-grained sediment with different dry densities (ρd" role="prese...
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Mohamed Ismail Moustafa
One of the most extensively studied topics in dozens of studies is the alteration process of ilmenite, the formation of leucoxene, and the presence of some impurity oxides: SiO2 and Al2O3. The altered Egyptian black sand ilmenite grains of relatively low...
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Stefano Carletta, Augusto Nascetti, Sagar S. Gosikere Matadha, Lorenzo Iannascoli, Thiago Baratto de Albuquerque, Nithin Maipan Davis, Luigi Schirone, Gabriele Impresario, Simone Pirrotta and John R. Brucato
AstroBio CubeSat is a mission funded by the Italian Space Agency aimed at validating novel lab-on-chip technology, that would enable the use of micro- and nanosatellites as autonomous orbiting laboratories for research in astrobiology. This 3U CubeSat is...
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Nataliya Yurkevich, Polina Osipova, Leonid Tsibizov, Ekaterina Tsibizova, Irina Fadeeva, Sergey Volynkin, Kristina Tulisova and Tatyana Kuleshova
The article presents the original results of the investigation of sulfide-bearing mine tailings dumps (Ursk, Western Siberia, Russia), the adjacent territory, and acid mine drainage flows. The novelty of this study is related to integration of geophysica...
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Kateryna Kostyk, Ivan Kuric, Milan Saga, Viktoriia Kostyk, Vitalii Ivanov, Viktor Kovalov and Ivan Pavlenko
The relevant problem is searching for up-to-date methods to improve tools and machine parts? performance due to the hardening of surface layers. This article shows that, after the magnetic-pulse treatment of bearing steel Cr15, its surface microhardness ...
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Jong Suk Lim and Hyung-Woo Lee
This paper presents a method of utilizing a non-contact position sensor for the tilting and movement control of a rotor in a rotary magnetic levitation motor system. This system has been studied with the aim of having a relatively simple and highly clean...
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Zhe Xiang, Nong Zhang, Zhengzheng Xie and Chenghao Zhang
To study the damage and destruction behavior of small coal pillars in coal mine roadway driving along gobs under long-term in-situ stress and multiple engineering disturbances, an unconfined compression experiment under a discontinuous cyclic load was de...
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