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Reasonable lubricants

Xem 1-8 trên 8 kết quả Reasonable lubricants
  • Sowing is one of the important agricultural operations for raising crops. After harvest of paddy, if there is deficit moisture in the soil at the time of sowing of wheat, the germination gets affected leading to loss of yield. Handling of water treated seeds by seed drill may open a new gate of opportunities for mechanized sowing of wheat under water stressed conditions, which was the prime objective of the study.

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  • In the paper, results of effect of lubricants on wall thickness in the deep drawing process are researched. The results are verified by the simulation and experimental. The research results order to reduce the minimum thickness of sheet metal in the deep drawing, selection of reasonable lubricants, contribute to improve product quality and meet the requirements of the working conditions of the product.

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  • This paper presents the results of calculation and numerical simulation to improve the bearing film stiffness of the medium cylindrical grinding machines with a reasonable hydrostatic parameters.

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  • In grinding process, the temperature produced in the grinding zone is high. This is because the process can be described as a cutting operation of a large number of cutting edges with high cutting speeds. For that reason, selection of suitable grinding fluid as well as cooling regimes are the subject of numerous studies on grinding general and in surface grinding. This paper presents the results of studying the effects of various types of cooling lubricant to the quality of surface grinding of 90CrSi steel by Hai Duong grinding wheel.

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  • A frank discussion alone with the patient before the examination provides op- portunity to discuss any sexual symptoms or concerns without another person present. Common reasons for fearing or avoiding pelvic examinations include embarrassment, lack of information, cultural or language barriers, pain with previous examinations, or post-traumatic stress related to sexual abuse. Each of these circumstances requires additional sensitivity and efforts to minimize emotional or physical discomfort. Often, given an opportunity, patients can articulate ways to decrease personal discomfort.

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  •  Matched against a wide range of spectroscopic and chromatographic techniques, the techniques of electroanalytical chemistry find an important role for several reasons: – Electroanalytical methods are often specific for a particular oxidation state of an element – Electrochemical instrumentation is relatively inexpensive and can be miniaturized – Electroanalytical methods provide information about activities (rather than concentration)

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  • This publication presents design examples covering various machines, vehicles and equipment having one thing in common: rolling bearings. For this reason the brief texts concentrate on the rolling bearing aspects of the applications. The operation of the machine allows conclusions to be drawn about the operating conditions which dictate the bearing type and design, the size and arrangement, fits, lubrication and sealing. Important rolling bearing engineering terms are printed

    pdf10p hungnhat 08-12-2009 101 8   Download

  • This publication presents design examples covering various machines, vehicles and equipment having one thing in common: rolling bearings. For this reason the brief texts concentrate on the rolling bearing aspects of the applications. The operation of the machine allows conclusions to be drawn about the operating conditions which dictate the bearing type and design, the size and arrangement, fits, lubrication and sealing. Important rolling bearing engineering terms are printed in italics. At the end of this publication they are summarized and explained in a...

    pdf40p hungnhat 08-12-2009 112 15   Download

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