Use of flexible pressure plane-turning rubber-cloth hoses for hydraulic transportation of abrasive materials

1977 ◽  
Vol 11 (12) ◽  
pp. 1251-1252
Author(s):  
A. E. Chizhov ◽  
V. A. Bityukov ◽  
R. F. Gorin ◽  
V. G. Polishchuk ◽  
E. T. Kharlamov
Keyword(s):  
Rubber Cloth

Uses of ultrasonic cleaners in paleontological laboratories

1989 ◽  
Vol 4 ◽  
pp. 213-217 ◽  
Author(s):  
John Pojeta ◽  
Marija Balanc
Keyword(s):  
Mechanical Energy ◽  
Electrical Energy ◽  
Soft Materials ◽  
Low Pressure ◽  
Pressure Waves ◽  
Sound Waves ◽  
Ultrasonic Cleaning ◽  
Cleaning Solution ◽  
Rubber Cloth ◽  
Human Hearing

Ultrasonic cleaning is a fast and usually safe method for cleaning many hard objects that are not glued together, and it is thus useful in paleontological laboratories. It is relatively ineffective for cleaning soft materials such as rubber, cloth, and fibers. Ultrasonic cleaning machines use sound waves, or mechanical vibrations, that are above the human hearing range, and operate at frequences up to 55,000 cycles per second. The sound waves are generated by a transducer (Figure 1), which changes high frequency electrical energy to mechanical energy. This mechanical energy, or vibration, is then coupled into the liquid in the cleaning tank. The vibrations cause alternating high and low pressure waves in the liquid. This action forms millions of microscopic bubbles, which expand during low pressure waves and form small cavities. During the high pressure waves, these cavities collapse, or implode, creating a mechanical scrubbinglike action, which loosens dirt on all surfaces in contact with the cleaning solution. This action can take place up to 55,000 times a second, making it seem as though the dirt is being blasted from the surface and cavities of the object being cleaned. Ultrasonic cleaning is effective wherever capillary action will take the solution. Complete cleaning usually requires from 30 seconds to two minutes (Anonymous, 1983).

scholarly journals On the Use of Rubber Cloth in the Treatment of Skin Diseases

1869 ◽  
Vol 80 (21) ◽  
pp. 373-376
Author(s):  
Hebra ◽  
James C. White
Keyword(s):  
Skin Diseases ◽  
Rubber Cloth

scholarly journals India rubber cloth

1837 ◽  
Vol 23 (2) ◽  
pp. 141-142
Author(s):  
G.
Keyword(s):  
Rubber Cloth

scholarly journals Determination of machines working elements speeds optimal correlation when watermelons and cabbages harvesting

2019 ◽  
pp. 89-94
Author(s):  
Aleksey Nikolayevich Tseplyaev ◽  
Maxim Vladimirovitch Ulyanov ◽  
Aleksey Vitalievich Tseplyaev ◽  
Sergey Anatolyevich Klimov ◽  
Vitaliy Alekseevich Tseplyaev
Keyword(s):  
Friction Coefficient ◽  
Fruit Size ◽  
Spherical Body ◽  
Conveyor Belt ◽  
Damage Level ◽  
Rubber Cloth ◽  
Fruit Damage ◽  
Working Bodies

In this article, the authors discuss the results of experiments to determine the working bodies moving elements speeds ratio when harvesting watermelons or cabbage heads, having a shape close to a spherical body. It was revealed that the conveyor harvester for watermelons harvesting, equipped with an active roll-in machine, can jam the fruit between the conveyor belt and the roll-in belt, this leads to the fruit damage. To find the minimum allowable damage level (up to 5% according to the agrotechnical requirements), it is necessary that the roll-in tape is made of rubber cloth with a friction coefficient of fт = 0.48, with a ratio of speeds, the limits of change are from 1.0 to 1.3, fruit size is dmin= 15 cm, dmax = 30 cm.  

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