Studies on tridymite: Forth report

The action of variable amounts of tridymite, and of tridymite combined with coal, on the lungs of rats.

It was first shown by Gardner (1938a and b) in animal experiments that tridymite appeared to be more fibrogenic than quartz when tested by intravenous injection in rabbits. In fact, all his animals injected with tridymite died by 11 weeks. King, Mohanty, Harrison, and Nagelschmidt (1953a) used intratracheal injections into the lungs of rats, and compared well graded pure samples of quartz and t...

Effect of impurities on cathodoluminescence of tridymite and cristobalite

Cristobalite and tridymite in andesite and obsidian exhibit bright blue emissions in color cathodoluminescence (CL) images. CL spectra of cristobalite and tridymite show emission bands at 400 and 430 nm, respectively. Their CL intensity decreases with an increase in the electron irradiation time, similar to the short-lived blue luminescence reported in hydrothermal quartz. The reduction rate of...

Some tips on how to report questionnaire-based studies

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FORTH Annotated Bibliography 5.31.11

Stack Caching in Forth

Stack caching speeds Forth up by keeping stack items in registers, reducing the number of memory accesses for stack items. This paper describes our work on extending Gforth’s stack caching implementation to support more than one register in the canonical state, and presents timing results for the resulting Forth system. For single-representation stack caches, keeping just one stack item in regi...