In this investigation the friction and wear performance of GUR 1020 medical grade ultra-high molecular weight polyethylene (UHMWPE) polymer under dry sliding, distilled water and egg albumen lubrication conditions were evaluated. The sliding experiments were carried out on a pin-on-disc tribometer. The contact configuration used was a polymer pin on a rotating AISI 304L stainless steel disc. We...

The investigation of Lubricated Friction and Wear is an extended study. The aim of this study is to investigate the friction and wear characteristics of Jatropha oil based biolubricant by using Cygnus Wear Testing Machine under load of 30N, a high rotating speed of 2000 rpm and one hour operation time. In this study, SEA 40 was used as a reference base lubricant. As a biolubricant various blend...

BACKGROUND Among the sexual minority groups, the Men who have Sex with Men (MSM) community is a large and scattered network. Sexual activity among MSM is frequent and often unplanned. STI and HIV are major medical problems faced by this vulnerable group. Stigma and discrimination towards this group result in poor access to preventive services that encourage condom and lubricant usage. METHOD ...

Warm compaction is a process leading to parts with high green strength and density. An increased compacting temperature lowers the flow stress of the metallic particles and increases their ductility, resulting in higher powder compressibility and stronger interparticles bonding, either mechanical or metallurgical. Although many studies have been published on warm compaction, very few investigat...

Compared to the significant body of work devoted to surface engineering for promoting dropwise condensation heat transfer of steam, much less attention has been dedicated to fluids with lower interfacial tension. A vast array of low-surface tension fluids such as hydrocarbons, cryogens, and fluorinated refrigerants are used in a number of industrial applications, and the development of passive ...

The effects of two lubricating oils on the trophic diversity of a nematode community of a Tunisian lagoon were investigated in a microcosm experiment. Sediment from a pristine site in Ghar El Melh lagoon (Western Mediterranean) was treated with mineral oil (Mobil 20 W-50), a synthetic lubricant (Mobil 0 W-40), the same two lubricants after use in a vehicle. Univariate analysis showed significan...

This experiment tested the influence of the lubricant magnesium stearate on the effectiveness of the drug acetaminophen in a mixture of glidants and excipients. There are many factors that can cause variation in the effectiveness of drugs in tablet form. Chief among them are the lubrication and glidant percentages, shear rate, tablet hardness and hydrophobicity. In order to allow the powder to ...

This work deals with the modelling of lubricated revolute joints in multibody mechanical systems. In most machines and mechanisms, the joints are designed to operate with some lubricant fluid. The high pressures generated in the lubricant fluid act to keep the journal and the bearing apart. Moreover, the thin film formed by lubricant reduces friction and wear, provides load capacity and adds da...

Replacing R-22 by HFC refrigerants in stationary air conditioners is forcing oil producers to develop a new lubricant which has good miscibility with HFC, lubricity and electric resistivity. Mitsui has selected a carbonate compound for a new lubricant candidate with HFC and developed it forcusing on its thermal stability, which is one of the most important factors to get good lubricity. By supp...

The achievement of high density at reasonable cost would be a definite advantage for the production of P/M components requiring high static and dynamic properties. The use of the electrostatic die wall lubrication technique appears as a very attractive route to promote densification. By reducing the level of friction at die walls, this technique should have the potential to also reduce density ...