Small, independent logging contractors can benefit
from cost control and cost planning. This report
details the labor and equipment cost components of a
logging crew. Records, both required and available for
determining costs, are discussed. Recommended costing
procedures are illustrated. Although the study took
place in the Pacific Northwest, the...
Mental illness is a universal phenomenon, but cultural context has a profound influence on how it is perceived, classified, and treated. Most systematic research on public attitudes toward mental illness has been completed in Western societies. The emergence of multicultural psychotherapy in the West has helped professionals recognize the extent...
Biome function is largely governed by how efficiently available resources can be used and yet for water, the ratio of direct biological resource use (transpiration, E_T) to total supply (annual precipitation, P) at ecosystem scales remains poorly characterized. Here, we synthesize field, remote sensing and ecohydrological modelling estimates to show...
The purposes of this study were to construct a Likert scale to
measure the attitudes of individuals toward their personal health, then
to establish the reliability and validity of the scale.
A 22 item scale was developed from computer part whole analysis
of 100 random items written and edited by...
The influence of overstory openness on the reproductive
ecology of Pacific yew (Taxus brevifolia Nutt.) was
investigated on 4 sites in western Oregon over 2 years. The
breeding system of T. brevifolia was found to deviate from
pure dioecy under a broad range of canopy and site
conditions. Production of...
The first committed step in DNA biosynthesis occurs by direct reduction of
ribonucleotides. This reduction is catalyzed by ribonucleotide reductase (RNR), an
enzyme which uses a unique radical mechanism to facilitate the transformation. All four
DNA precursors are synthesized by a single enzyme. Therefore, an intricate pattern of
regulation has...
Hybrid poplar plantations (Populus trichocarpa x Populus deltoides) are a relatively new feature on the landscape in the Pacific Northwest of the United States, and these plantations may soon include genetically engineered trees. Meanwhile, many wild poplar populations (Populus spp.) are highly degraded due in part to logging, dams, grazing,...