Forest ministry felled

Death of Root Tissues in Standing [live] and Felled

Recycling tree root components is important in sustaining the productivity of southern pine forests. Death of outer cortical tissues and mortality of short roots is ubiquitous in conifers. Affected tissues lose their starch grains and accumulate secondary products, such as tannins. In this study, lo-year-old loblolly pine trees were cut at the soil surface and sequential samples of roots were c...

Ministry of Supply

Ministry of Aviation Supply

Ministry of Defence

MINISTRY OF AVIATIOid

1959 SUMMARY A method is given for representing the results of wind-tunnel tests of fan wings in a non-dimensional form suitable for the analysis of transition mQtion3. The procedure takes into account the effect on power requirements of variation of thrust engine loading in relation to that of the fan. As an example, results are displayed of tests of a rectangular wing of aspect ratio I with f...