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Huan Dai, Hao Li and Yan Li
The research on the fragmentation mechanism of seabed minerals under high ambient pressure significantly contributes to the exploitation of seafloor massive sulfides (SMS). In this paper, the uniaxial compressive strength (UCS) test and triaxial compress...
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Magdalena Cortina, Jon Iñaki Arrizubieta, Eneko Ukar and Aitzol Lamikiz
Hybrid manufacturing processes that combine additive and machining operations are gaining relevance in modern industry thanks to the capability of building complex parts with minimal material and, many times, with process time reduction. Besides, as the ...
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Rika Dwi Hidayatul Qoryah, Agil Widhy Azizi, Mahros Darsin
Pág. 256 - 269
The cutting fluid is one of the essential factors in machining to increase machinability. The issuance of ISO 14000 about reducing the use of cutting fluid for its danger for operator and environment has encouraged many researchers to find ways to minimi...
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Jean Robert Pereira Rodrigues, Tiago do Espírito Santo Baldez Neves, Marcio Bacci da Silva, Keyll Carlos Ribeiro Martins, José Ribamar dos Santos Ribeiro, Adilto Pereira Andrade Cunha
Pág. 257 - 262
The cutting fluids in machining, when chosen and applied adequately can contemplate in benefits during the manufacturing processes. The selected method should allow the cutting fluid to reach the closest possible of the cutting edge lubricating the chip-...
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Peter A. Arrabiyeh, Martin Bohley, Felix Ströer, Benjamin Kirsch, Jörg Seewig and Jan C. Aurich
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Bin Wang and Corrado Fidelibus
In this article, an open-source code for the simulation of fluid flow, including adsorption, transport, and indirect hydromechanical coupling in unconventional fractured reservoirs is described. The code leverages cutting-edge numerical modeling capabili...
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Baoling Cui and Mingyu Shi
Centrifugal pumps are essential fluid transfer devices in marine engineering. As the two most critical components of a centrifugal pump, the dynamic?static interference between the volute and the impeller makes the flow near the cutwater highly unstable,...
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Rosanna Maniscalco, Eugenio Fazio, Rosalda Punturo, Rosolino Cirrincione, Agata Di Stefano, Salvatore Distefano, Martina Forzese, Gabriele Lanzafame, Giusy Simona Leonardi, Sergio Montalbano, Alessandra Giovanna Pellegrino, Antonino Raele and Giuseppe Palmeri
The petroleum industry has always been pursuing highly exploitable gas fields, which are often hosted in carbonate rocks. However, carbonates are highly heterogeneous and show different fabrics and structures as the result of sedimentation in various env...
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Jialiang Wang, Dilei Qian, Yang Sun and Fenfei Peng
The performance of the diamond bit directly affects the drilling efficiency of the seafloor drill. The drill bits used in land drilling are prone to abnormal wear, low coring efficiency, and large sample disturbance in marine exploration. At first, in th...
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Ru Jia, Bo Liu, Xiaofei Fu, Lei Gong and Zhida Liu
Faults have complex internal structures, which can be divided into the fault core and the damaged zone. During the fault formation process, the damaged zone will develop a large number of fractures cross cutting the adjacent host rocks, where the size an...
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Paulo Henrique da Silva Campos, Vinicius de Carvalho Paes, Ernany Daniel de Carvalho Gonçalves, João Roberto Ferreira, Pedro Paulo Balestrassi, João Paulo Davim Tavares da Silva
Pág. e38091
This paper presents the modeling of tool life and surface roughness for machining AISI 52100 steel with a hardness of 50 HRC through Design of Experiments and Response Surface Methodology (RSM) with a view to enhance the quality and productivity. Knowing...
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Paulo Henrique da Silva Campos, Vinicius de Carvalho Paes, Ernany Daniel de Carvalho Gonçalves, João Roberto Ferreira, Pedro Paulo Balestrassi, João Paulo Davim Tavares da Silva (Author)
Pág. e38091
This paper presents the modeling of tool life and surface roughness for machining AISI 52100 steel with a hardness of 50 HRC through Design of Experiments and Response Surface Methodology (RSM) with a view to enhance the quality and productivity. Knowing...
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Su-Wei Yue, Deng-Feng Li, Leon Bagas, Jing Fang and Zhen-Wen Lin
The giant Jianchaling Au (52 t Au) deposit is located in the Mian-Lue-Yang Terrane in the southern part of the Qinling Orogen of central China and is hosted by metamorphosed carbonate rocks of the Late Neoproterozoic Duantouya Formation. The deposit cons...
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Daniel Marshall, Carol-Anne Nicol, Robert Greene, Rick Sawyer, Armond Stansell and Ross Easterbrook
Gold, present as electrum, in the Battle Gap, Ridge North-West, HW, and Price deposits at the Myra Falls mine, occurs in late veinlets cutting the earlier volcanogenic massive sulphide (VMS) lithologies. The ore mineral assemblage containing the electrum...
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Su-Wei Yue, Deng-Feng Li, Leon Bagas, Jing Fang and Zhen-Wen Lin
The giant Jianchaling Au (52 t Au) deposit is located in the Mian-Lue-Yang Terrane in the southern part of the Qinling Orogen of central China and is hosted by metamorphosed carbonate rocks of the Late Neoproterozoic Duantouya Formation. The deposit cons...
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Waldo Vivallo,Sergio Espinoza,Fernando Henriquez
Pág. 75 - 88
ABSTRACT. Metasomatism and hydrothermal alteration in the Cerro Negro Norte iron ore district, Copiapo, Chile. The magnetite-apatite ores in the Cerro Negro Norte iron district, Copiapo, are hosted by hydrothermally altered andesitic volcanic rocks. As a...
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Waldo Vivallo,Sergio Espinoza,Fernando Henriquez
Pág. 75 - 88
ABSTRACT. Metasomatism and hydrothermal alteration in the Cerro Negro Norte iron ore district, Copiapo, Chile. The magnetite-apatite ores in the Cerro Negro Norte iron district, Copiapo, are hosted by hydrothermally altered andesitic volcanic rocks. As a...
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Jean Jacques Cochemé,Luis Aguirre,Richard E. Bevins,Douglas Robinson,Philippe Münch
Pág. 217 - 231
ABSTRACT. Basalts and basal tic andesites interbedded with sandstones in the molassic Báucarit Formation of northwestern Mexico show contrasting zeolite and clay assemblages in amygdales and in veins cross-cutting the flows. In amygdales, heulandite-clin...
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Jean Jacques Cochemé,Luis Aguirre,Richard E. Bevins,Douglas Robinson,Philippe Münch
Pág. 217 - 231
ABSTRACT. Basalts and basal tic andesites interbedded with sandstones in the molassic Báucarit Formation of northwestern Mexico show contrasting zeolite and clay assemblages in amygdales and in veins cross-cutting the flows. In amygdales, heulandite-clin...
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Jinwu Wang, Zhe Liu, Mao Yang, Wenqi Zhou, Han Tang, Long Qi, Qi Wang and Yi-Jia Wang
Weeds compete with rice for sunlight and nutrients and are prone to harboring pathogens, leading to reduced rice yields. Addressing the issues of low weeding efficiency and weed mortality rates in existing inter-row weeding devices, the study proposes th...
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