Experiment study on overdepth coefficient of the cut hole in coal mine roadway excavation blasting
工程科学学报, 2023 In rocky road drilling and blasting in coal mines, the key to work efficiency is cutting. Although blast hole depth has steadily increased with increasing rocky road excavation activities, the cut hole depth is still ordinarily shallow, which is normally
Yan-bing WANG +5 more
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Технічна інженерія, 2023 The wide implementation of finishing face milling processes instead of abrasive treatment processes is explained by their high productivity and the possibility of providing processed surfaces of low roughness with the necessary microrelief.
H.M., O.A. , M.M.
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Barremian and Aptian (Cretaceous) sharks and rays from Speeton, Yorkshire, north-east England [PDF]
, 2004 Bulk sampling of a number of horizons within the upper part of the Speeton Clay Type section has produced teeth and other remains of sharks and rays from several poorly studied horizons.
Applegate +34 more
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Estimation of specific cutting energy in an S235 alloy for multi-directional ultrasonic vibration-assisted machining using the Finite Element Method [PDF]
, 2020 The objective of this work is to analyze the influence of the vibration-assisted turning process on the machinability of S235 carbon steel. During the experiments using this vibrational machining process, the vibrational amplitude and frequency of the ...
Florez García, Luis Carlos +2 more
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Improving the finishing face milling process of flat surfaces of small width parts
Технічна інженерія, 2021 Face mills equipped with superhard materials find more and more wide application at finishing of high hardness materials. These tools fully reveal the potential at high-speed processing.
H.M. , O.A. , N.O. , L.Ye.
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The risk-taking and self-harm inventory for adolescents: Development and psychometric evaluation [PDF]
, 2010 In this study, we report on the development and psychometric evaluation of the Risk-Taking (RT) and Self-Harm (SH) Inventory for Adolescents (RTSHIA), a self-report measure designed to assess adolescent RT and SH in community and clinical settings.
Fearon, Pasco R. M. +3 more
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Quaternary rupture of a crustal fault beneath Victoria, British Columbia, Canada [PDF]
, 2017 The seismic potential of crustal faults within the forearc of the northern Cascadia subduction zone in British Columbia has remained elusive, despite the recognition of recent seismic activity on nearby fault systems within the Juan de Fuca Strait.
Amos, Colin +4 more
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Гірничі, будівельні, дорожні та меліоративні машини, 2023 The results of the construction of an information model of the process of soil cutting with straight-furrow oriented knives of dynamic action are given. Bulldozer equipment and its main tasks are considered.
Volodymyr Rashkivskyi, Bohdan Fedyshyn
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Structural history of the southwestern corner of the Kaapvaal Craton and the adjacent Namaqua realm: new observations and a reappraisal [PDF]
, 1991 The rocks along the southwestern margin of the Kaapvaal Craton were deformed up to 7 times during the Early to Middle Proterozoic. The oldest deformation D1 is recorded in the N-S-trending Uitkoms cataclasite of pre-Makganyene age (>2.24 Ga) on the ...
Altermann, Wladyslaw, Hälbich, Ingo W.
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On the Machinability of an Al-63%SiC Metal Matrix Composite [PDF]
, 2020 This paper presents a preliminary study of aluminium matrix composite materials during machining, with a special focus on their behavior under conventional processes.
Batista Ponce, Moisés +4 more
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