Five Year Cumulative Index: Articles and Comments by Title

A five year cumulative index of articles and comments by title for the journal RISK

Five Year Cumulative Index: Book Reviews & Essays by Title

A five year cumulative index of book reviews and essays by title for the journal RISK

A Five-Year Topical Index

The following index has been designed to help the reader easily locate specific examples of wordplay appearing in the first five volumes of Word Ways

An evaluation of grease type ball bearing lubricants operating in various environments

Grease type lubricants in bearings were evaluated in five different adverse environments for a one year period. Four repetitions of each test were made to provide statistical samples. These tests were then used to select four lubricants for five year tests in selected environments with five repetitions of each test for statistical samples. Three five year tests were started in (1) continuous operation; (2) start-stop operation, with both in vacuum at ambient temperatures; and (3) continuous operation at 93.3 C. To date, in the one year tests, the best results in all environments were obtained with a high viscosity index perfluoroalkylpolyether grease

Predicting gold ores price

It was demonstrated that gold ores price can be predicted at a several year horizon. The prediction consists of three steps. First, we show that the difference between producer price index and the index for gold ores is characterized by the presence of sustainable mid-term trends. Second, the evolution of the difference is predicted at a five to ten-year horizon. Considering the PPI to be practically constant over the next decade, the above difference provides a direct prediction of the price index for gold ores.gold ores, prediction, PPI