Results 41 to 50 of about 29,466 (163)
Analysis on Dynamic Response of Double Casing Perforation in Offshore Oil and Gas Fields
Shiyou jixie, 2022 In order to further understand the dynamic mechanical law of double casing perforation process in offshore oil and gas fields and ensure the smooth progress of double casing perforation operation,depending on the structural characteristics of double ...
Li Zhong +5 more
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Investigation of Quality of Packaging Made of Laminated Micro-Corrugated Cardboard
Технологія і техніка друкарства, 2018 In the modern packaging industry, a large assortment of materials, various technologies and equipment is used. Market relations form the demand for inexpensive and optimal in terms of its operational and functional properties, qualitative ...
Світлана Федорівна Гавенко +3 more
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LubricantsThis study investigates the influence of ore particle shape on the wear behavior of ball mill liners using the Rocky-DEM software. A simulation model of a laboratory-scale ball mill was established to analyze the wear patterns of liners under three ...
Zixin Yin, Xiangyi Pan
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An in vitro evaluation of pH variations in calcium hydroxide liners
Journal of Indian Society of Pedodontics and Preventive Dentistry, 2006 The purpose of this present study was to determine the pH changes of five different commercially available calcium hydroxide liners and variations of pH at different time intervals. The following commercially available materials were investigated: Dycal (
Subramaniam P, Konde S, Prashanth P
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A stress-displacement solution for a pressure tunnel with impermeable liner in elastic porous media
Latin American Journal of Solids and StructuresConsidering the effects of the changes of the pore water pressure around the opening, the construction sequence of the tunnel and the interaction between the liner and the surrounding geomaterial on the mechanical response of the tunnel and in ...
M.B. Wang, G. Wang
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Key Technology of Safety Release of Short Liner in Deep and Ultra-Deep Wells
Shiyou jixie, 2021 The high drag in deep and ultra-deep wells makes releasing difficult and the short liner and light weight results in difficulty in identifying releasing.
Feng Liying +4 more
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Journal of Islamic Dental Association of Iran, 2013 Background and Aim: Restoration of deepdental caries without pulp exposure is usually challenging for dentists. In order to prevent pulp exposure and subsequent root canal therapy (RCT), indirect pulp capping is usually performed. Stepwise excavation (SE)
Sepideh Banava +2 more
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Liner Wear Prediction Using Bayesian Regression Models and Clustering
International Journal of Prognostics and Health ManagementChutes, bins, and hoppers are critical assets in bulk commodity handling. Sacrificial wear liners are employed to protect these assets from abrasive wear. An essential maintenance challenge is optimising the timing of liner replacements.
Jacob Van Den Broek +2 more
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Shiyou jixie, 2018 In order to study the influence of the liner structure on the SAGD injection and production parameters and sub-cool, the physical model and basic assumptions of the SAGD horizontal well at production stage are established. The Benda’s equation is used to
Huang Yong +4 more
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