An environmental friendly palm-grease has already been formulated from modified RBDPO (Refined Bleach Deodorized Palm Oil) as base oil and lithium soap as thickener. Such palm-grease is dedicated for general application and or equipment working in areas where biodegradability is required such as in agriculture, forestry and coastal marine, recreation areas. The grease was manufactured via 4 ste...

The shaft deflection is one of critical factors that deteriorate the grease lubrication state inside the tapered roller bearings (TRBs). So, in this paper, on the premise of the TRB subjected to the combined loads and the shaft is deflected, the grease lubrication model at the TRB contacts was constructed, in which the interaction loads, linear and angular displacements of the bearing parts wer...

This study aims to understand the role of grit in Korean elderly suicide ideation. The subjects of this study are male and female elderly over 65 living in a local community. Main result is that if they had low grit when they had high depression, their suicidal ideation was high, but if they had high grit, their suicidal ideation significantly decreased.

In this research, we investigate how grittier individuals might incur some costs by persisting when they could move on. Grittier participants were found to be less willing to give up when failing even though they were likely to incur a cost for their persistence. First, grittier participants are more willing to risk failing to complete a task by persisting on individual items. Second, when they...

Spray aeration is a comparatively low-cost option to reduce trihalomethane (THM) concentrations in distribution system storage. The effect of spray on unregulated, toxic disinfection by-products was investigated bench-scale apparatus closed-tank and open-tank experiments. In the experiments, initially over 90% THMs, trichloroacetonitrile, chloropicrin were removed, while 36% dihaloacetonitriles...

This paper is the second in a series that examines grease lubrication mechanisms and failure in rolling element bearings. The aim of the work was to understand the grease condition changes during use and the relationship to lubrication performance and failure. R0F bearing tests were carried out with two lithium hydroxystearate greases and the effects of the temperature, the speed, and the addit...