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Wood 1 well

W. S. Bray and W. R. Wood. Well cementing method using a dispersant and fluid loss intensifier. Patent US 5105885, 1992. [Pg.363]

Wood well treated with current commercial fire-retardant impregnation treatments will have flame-spread ratings of 25 or less. Many treated wood products have obtained a special marking or designation "FR-S" from UL (36) for having a flame-spread, fuel-contributed, and smoke-developed classification of not over 25 and no evidence of significant progressive combustion in an extended 30-minute ASTM E84 (34) test procedure. The fuel-contributed and smoke-developed classifications are also calculated relative to performance of red oak and asbestos-cement board. [Pg.95]

Globally, the net carbon loss from tropical forests into the atmosphere from tropical deforestation and changes to secondary forest, pasture and crops, has been estimated (Seiler and Crutzen, 1980 Dickinson, 1981) to be about 1.0 X 10 kg carbon, or equivalent to about 17% of that due to fossil fuel burning. This amount tends to support the view that the current increase in atmospheric CO2 is primarily due to increased fossil fuel combustion (Niehaus, 1979 Broecker et d., 1979). Nevertheless, there is sufficient uncertainty in the basic data, e.g. the rate of deforestation and the amount of biomass, to permit wide variation in the final estimates. Thus, other estimates have suggested that the release of carbon due to tropical deforestation is 3 X 10 kg carbon or even more, with overall releases from biota estimated to approach 6 X 10 kg carbon (Wood-well, 1978 Woodwell et d., 1978). This latter amount is more or less equivalent to that released by fossil fuels. [Pg.641]

Wood well painted I—easiest, Resistance Conspicuousness Color of Degree of ... [Pg.316]

There are many review articles and books about the carbon cycle available with varying degrees of detail and points of emphasis (e.g. Bolin, 1970a,b Keeling, 1973 Woodwell and Pecan, 1973 Wood-well, 1978 Bolin et al., 1979 Revelle, 1982 Bolin and Cook, 1983 Degens et al., 1984). [Pg.239]

Woodwell, G.M., Rich, P.H. and Hall, C.A.S., 1973. Carbon in estuaries. In G.M. Wood-well and E.V. Pecan (Editors), Carbon and the Biosphere. Proc. 24th Brookhaven Symp. Biol. New York, 1972. Technical Inform Center, Office Inform. Services, U.S. Atomic Energy Comm. Symp. Ser., 30 221—239. [Pg.69]

Their arms are bows and arrows, well made, except that they have no iron, nor any other kind of hard metal. Instead of iron they use teeth of animals or of fish, or a bit of wood well burnt at the point. They are sure shots, and where they aim they hit. In some places the women use these bows. They have other weapons like lances, hardened... [Pg.58]

Figure 15. Brookhaven National Laboratory source, (a) Source container. The as cesium chloride crystals is in six stainless steel tubes supported in the cylindrical bracket, (b) Handling mechanism. The cable to the source passes through a 4-inch pipe buried 30-40 cm beneadi the soil surface. From Wood well (1963). Figure 15. Brookhaven National Laboratory source, (a) Source container. The as cesium chloride crystals is in six stainless steel tubes supported in the cylindrical bracket, (b) Handling mechanism. The cable to the source passes through a 4-inch pipe buried 30-40 cm beneadi the soil surface. From Wood well (1963).
The cleaning process proceeds by one of three primary mechanisms solubilization, emulsification, and roll-up [229]. In solubilization the oily phase partitions into surfactant micelles that desorb from the solid surface and diffuse into the bulk. As mentioned above, there is a body of theoretical work on solubilization [146, 147] and numerous experimental studies by a variety of spectroscopic techniques [143-145,230]. Emulsification involves the formation and removal of an emulsion at the oil-water interface the removal step may involve hydrodynamic as well as surface chemical forces. Emulsion formation is covered in Chapter XIV. In roll-up the surfactant reduces the contact angle of the liquid soil or the surface free energy of a solid particle aiding its detachment and subsequent removal by hydrodynamic forces. Adam and Stevenson s beautiful photographs illustrate roll-up of lanoline on wood fibers [231]. In order to achieve roll-up, one requires the surface free energies for soil detachment illustrated in Fig. XIII-14 to obey... [Pg.485]

Vapors emitted from the materials of closed storage and exhibit cases have been a frequent source of pollution problems. Oak wood, which in the past was often used for the constmction of such cases, emits a significant amount of organic acid vapors, including formic and acetic acids, which have caused corrosion of metal objects, as well as shell and mineral specimens in natural history collections. Plywood and particle board, especially those with a urea—formaldehyde adhesive, similarly often emit appreciable amounts of corrosive vapors. Sealing of these materials has proven to be not sufficiently rehable to prevent the problem, and generally thek use for these purposes is not considered acceptable practice. [Pg.429]

The common hemiceUulose components of arborescent plants are listed in Table 3. Xylans, arabinogalactans, and pectic substances are common to all while only traces (if at all) of glucomaimans are found in the cell walls of bamboo. Other polysaccharides are found in trace amounts in wood as well as in bark, growing tissues, and other specialized parts of trees. [Pg.30]

Copper quinolinolate (oxine copper) is the chelate of divalent copper and 8-hydroxyquinoline and shares most of its market with copper naphthenate, which is a complex copper salt of mixed naphthenic acids. The principal uses are in wood treatments and some military textiles, where the green color is not objectionable. Copper naphthenate has an odor but is cheaper than oxine. Both copper naphthenate and 2inc naphthenate have performed well in environment tests, with exposure to soil above-ground, as well as concrete (33). [Pg.98]

Table 13 shows some of the developmental products that have EPA appHcations pending and may be available in the near future. Sea Nine is a variation on the very successflil isothiazolone chemistry. It is claimed to be an improvement over metallic actives used for antifouling paint and wood preservation (46,47). Decylthioethylamine and its water-soluble hydrochloride are claimed to be especially effective at controlling biofilm in cooling water appHcations (48—50). The hydroxymethylpyra2ole shown is also suggested to have properties that are well suited to the protection of aqueous products or emulsions (51,52). [Pg.101]

Lindane is used predominately as a seed dressing and soil insecticide, for the control of ectoparasites of humans and domestic animals, for the control of locusts and grasshoppers, and as a residual spray to control the Anopheles vectors of malaria. Because of its relatively high volatility it is useful to control wood-boring insects of timber, fmit trees, and ornamental plants. The mode of action is not well understood but is thought to be competitive blocking of the y-aminobutyric acid (GABA) transmitter of synaptic nerve transmission. [Pg.277]

The significance of phenoxy anions is well recognized in the isolation of kraft and other water-insoluble technical lignins by acid precipitation. The ioniza tion of phenoHc hydroxyl groups coupled with the reduction of molecular size renders native lignin soluble in the aqueous pulping solution, thus enabling its separation from the polysaccharide components of wood. [Pg.143]

Turpentine Oil. The world s largest-volume essential oil, turpentine [8006-64-2] is produced ia many parts of the world. Various species of piaes and balsamiferous woods are used, and several different methods are appHed to obtain the oils. Types of turpentines include dry-distiUed wood turpentine from dry distillation of the chopped woods and roots of pines steam-distilled wood turpentine which is steam-distilled from pine wood or from solvent extracts of the wood and sulfate turpentine, which is a by-product of the production of sulfate ceUulose. From a perfumery standpoint, steam-distilled wood turpentine is the only important turpentine oil. It is rectified to yield pine oil, yellow or white as well as wood spirits of turpentine. Steam-distilled turpentine oil is a water-white mobile Hquid with a refreshing warm-balsamic odor. American turpentine oil contains 25—35% P-pinene (22) and about 50% a-pinene (44). European and East Indian turpentines are rich in a-pinene (44) withHtfle P-pinene (22), and thus are exceUent raw materials... [Pg.339]


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See also in sourсe #XX -- [ Pg.38 , Pg.40 , Pg.153 , Pg.403 ]




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