This paper presents an investigation of the power needs and
impedance-matching techniques involved when heating small charges of
relatively high-resistivity semiconductor materials. Topics of discussion
also include a brief section on the theoretical basis for
zone refining, relative merits of resistance and induction heating,
travel mechanism requirements, and work coil...
Published February 1952. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Soil acidity, expressed by low soil pH, causes reduced crop growth and significant economic loss. It is the most commonly overlooked and poorly understood yield-limiting factor in western Oregon and a developing concern in eastern Oregon. This publication describes the concept of soil acidity and the limitations it causes for...