The vapor-drying process is described briefly and its present status in industry is discussed. Fairly extensive data on the vapor drying of 1-, 2-, and 4-inch Douglas-fir and 2-inch western hemlock lumber are presented. Exploratory work on the vapor drying of redwood, Pacific madrone, red alder and ponderosa pine is...
Checking was influenced b drying conditions. This influence was greatest before average moisture content reached 20 per cent, but tension in surface layers caused checking even below this point.
Neither high initial dry-bulb temperature nor initial conditions of high equilibrium moisture content were conducive to checking.
High temperature and high...
Moisture content and shrinkage were determined on specimens equilibrated at two conditions for equilibrium moisture content (EMC) at room temperature after the specimens had been dried under a variety of constant temperatures with constant EMC's. Moisture content at room temperature equilibrium was less for specimens dried at high temperature than...
Four charges of S-inch paper roll plugs of Oregon maple were kiln-dried at various temperatures and humidities. The charge with the most desirable combination of short drying time and low degrade was dried to 12 per cent moisture content in lit hours, using a dry-bulb temperature of 160 degrees F...
Forced-air drying of lumber is economically feasible as an aid to sawmills without dry kilns. Reduced cost of shipping more than offsets cost of drying with forced circulation of air. Investment in equipment is small.
In the Willamette Valley, forced-air drying probably can be accomplished successfully throughout the year. High...
The Oregon Forest Products Laboratory was asked in July 1953 by the Oregon Alder and Maple Company, Willamina, to work on the problem of dark stain which developed at sticker crossings in air-drying red alder (Alnus rubra, Bong.) during the summer months.
Previous experience at the Oregon Alder and Maple...
The increasing volume of young-growth Douglas-fir timber cut in the Pacific Northwest emphasizes the need for more knowledge on the characteristics of lumber sawed from these trees.
The study described here was initiated to learn the extent arid causes of degrade resulting from kiln-drying young-growth Douglas-fir dimension lumber. At the...
To test the effects of kiln-drying on strength properties of Douglas fir and western hemlock, temperatures to 230 F, conditions for equilibrium moisture contents of 6 percent and 12 percent, and prolonged heating were investigated.
Prolonged heating and choice of conditions for 6 percent or 12 percent equilibrium moisture content...
Covers the period from December 1, 1890 to November 30, 1892. Concerned with fisheries legislation and enforcement, financial reporting, hatcheries and fisheries statistics. 4th report (1891) found in p.1-28. The fifth report (1892) (p.29-46) includes sections on fish and game laws of Oregon. A paper copy of this report may...
Covers Dec.1, 1888 - November 30, 1890. 3rd report (1889) p.1-17. 4th report (1890) p.18-57. Both reports cover legal aspects of state fisheries management, financial reporting, hatcheries and fisheries statistics. The 4th report (1890) has a section covering General Fishing Laws of Oregon: Relating to Oysters; Killing Fish with Explosives;...
Reviews fisheries legislation, hatchery program progress, dangers to salmon. Complains about seals and sea lion predation on salmon. Reviews major fishing streams of the time. Fiscal and statistical reports included.
This report is documentation of activities and outcomes of the work of the Student Affairs Research and Evaluation office in the Division of Student Affairs. The Office was created by the Vice Provost for Student Affairs in July, 2002. Rebecca A. Sanderson, PhD, was the first Director for this office.