Development of efficient digital model for steam gravitational method of heavy crude production

2008 ◽  
Author(s):  
D.V. Klemin ◽  
V. Pimenov ◽  
D. Rudenko
2017 ◽  
Vol 1 (1) ◽  
pp. 1-7
Author(s):  
Corrie Grosse

From 2011 to 2014 fossil fuel corporations trucked tar sands processing machinery along rural Idaho highways. The machinery was bound for the world's largest deposits of tar or oil sands, a heavy crude oil substance called bitumen, located in the western Canadian province of Alberta. These loads of machinery, what became known as megaloads, encountered much resistance. Throughout Idaho and the surrounding region, a network organized opposition. Neighbors, grassroots organizations, nonprofits, and the Nez Perce and other tribes all collaborated. They held information sessions, protested, waged legal battles, monitored the loads, and blockaded highways. What oil companies hoped would be a cost-effective solution for transporting their megaloads became a David versus Goliath, Coyote versus the Monster—to reference the Nez Perce creation story—struggle to protect rural and indigenous ways of life and sovereignty, and the planet.


2020 ◽  
Vol 64 (1) ◽  
pp. 15-24
Author(s):  
Kupriyanov A.O. ◽  
◽  
Kuznetsov D.A. ◽  
Morozov D.A. ◽  
Leve D.E. ◽  
...  

Author(s):  
A.V. Stomatov ◽  
D.V. Stomatov ◽  
P.V. Ivanov ◽  
V.V. Marchenko ◽  
E.V. Piitsky ◽  
...  

In this work, the authors studied and compared the two main methods used in dental practice for the automated production of orthopedic structures: the widely used CAD / CAM milling method and the 3D printing technology. As an object of research, temporary crowns were used, which were made on the basis of the same digital model: a) by the method of CAD / CAM milling from polymethylmethacrylate disks; b) by 3D printing from photopolymer resin based on LCD technology. Comparison of production methods and finished designs was carried out according to the following characteristics: strength, durability, aesthetic qualities, accuracy of orthopedic designs, etc. According to the results of the study, it was concluded that 3D printing can be a good alternative to CAD / CAM milling in solving problems of temporary prosthetics.


2017 ◽  
Vol 2017 (13) ◽  
pp. 1448-1465
Author(s):  
Rasaan J Bines ◽  
Mike W Sowell ◽  
John Woodhull
Keyword(s):  

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