Control forest products

Carlson, F.E., Phillips, E.K., Tenhaeff, S.C. and Detlefsen, W.D., Measuring and Controlling Volatile Organic Compound and Paniculate Emissions from Wood Processing Operations and Wood-Based Products. Forest Products Society, Madison WI, 1995, pp. 52-61. 

F. L. Browne, Theories of Combustion of Wood and It s Control. Report 2136, Forest Products Laboratory, Forest Service, U.S. Department of Agriculture, Madison, Wisconsin (December 1958). 

Anonymous. 1978. Current use of weed control on industrial forest lands. Pages 40-43. la Benefits of 2,4,5-T in forest management. American Paper Institute/National Forest Products Association. Washington, D.C. 

Chemicals have been an important means of controlling forest insect pests in Canada for the past four decades. They have been used to limit the impact of some of the most destructive forest pests, such as spruce budworms (Chovistoneuva spp.), on forest resources essential to the production of fibre and other forestry products. With growing demand for these products, pest control... 

Toughness determinations were made on the matched 9.5 cm long yellow poplar sticks using a U.S. Forest Products Laboratory toughness tester (9). One stick of each end matched four sticks served as an untreated control. The other three sticks were treated identically or with three different concentrations of zinc chloride catalyst. The results are given in Table l. 

Researchers at the Eastern Forest Products Laboratory in Canada have evaluated the urea and melamine amino-resin systems (9, 57, 99-110). Their work demonstrates that both systems show good leach resistance and reduced flame spread. The stability of these resins is controlled by the rate of methylolation of the urea, melamine, and dicyandiamide. The optimum mole ratio for stability of these solutions is 1 3 12 4 for urea or melamine, dicyandiamide, formaldehyde, and orthophosphoric acid. However, even at the optimum mole ratios, the pot life of the melamine system is less than that of the urea system. In both systems the nitrogen is fixed to a greater degree than the phosphorus. However, the degree of fixation of the phosphorus is greater with the melamine than with the urea. The melamine structure may promote formation of compounds with phosphoric acid that are less soluble than those from urea and dicyandiamide. 

Feihl O and Godin V (1967) Setting veneer lathes with aid of instruments. Canadian Department for Rural Development, Forestry Branch, Publication No. 1206 Feist WC (1984) The role of water repellents and chemicals in controlling mildew on wood exposed outdoors USDA, Forest Service, Forest Products Laboratory, Research Note FPL 0247... 

The overall objective of this and a companion paper (22) is to define the extent to which board formaldehyde emission is controlled by resin hydrolysis or other processes. In the companion paper I have critically reviewed the literature and presented original Forest Products Laboratory (FPL) data in three related aspects of the formaldehyde emission phenomenon the chemistry of and formaldehyde liberation from formaldehyde-urea and formaldehyde-phenol states the chemistry of and formaldehyde liberation from formaldehyde-cellulose and resin-cellulose states and our knowledge of the board emission mechanism derived from actual board and wood systems. Whereas my oral presentation at the American Chemical Society (ACS) Symposium made use of information from all three of those parts, this written paper, in the interest of saving space, is limited to literature and FPL data dealing with actual wood-containing systems. The Conclusions section of this paper, however, makes use of the results from all three parts of the companion paper. Experimental details of the... 

Since the 1940s, experiments with additions of nutrients on hundreds of plots in the field have shown a more or less strong N limitation on forest growth in Fennoscandian forests ( I amm, 1991 Binkley and Hogberg, 1997). In such trials, additions of NH4NO3 increase forest production, but they frequently acidify the mineral. soil (Fig. 5 Tamm, 1991 Binkley and Hogberg, 1997). This means that the BC/Al (or Ca/Al) ratio is lowered, while forest production increases, and definitely implies that the N supply has proximal control of forest productivity. 

Pankevicius, E. R. Control of Shrinkage in Australian Timbers Division of Forest Products Technical Paper 54 CSIRO Melbourne, 1968. 

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