White poplars

Populus alba L. P. davidiana Dode P. tomentosa Carr. Yin Bai Yang (White poplar) (leaf, stem bark) Salicin, populin, benzoyl salicin, tannins, erisin, salicinase, salicortin, tremulacin, salireposide.50 Depurative, for colic, eczema, herpes, labialis, fever, dysuria, antiseptic, antiperiodic. 

Ash—the trunk,. 0-8i Spanish. Tew, 0-80 Apple-tree 0-79 Male Fir 0-55 Spanish White Poplar, 0-52 Female Fir, 0-19 Poplar, 0 58... 

Fig. 6.1. Transport of gases and particles to and from flat plates and leaves by Brownian diffusion , l3lI vapour, flat plate (Chamberlain, 1953) O, 212Pb vapour, bean leaves (Chamberlain, 1974) , water vapour, bean leaves (Grace Wilson, 1976) +, x, 0.17-jum particles to pine, oak leaves (Belot, 1975) A, V, , 0.03- m particles to nettle, beech, white poplar leaves (Little Wiffen, 1977) line A, theory, laminar flow,...

Shoots of nettle, white poplar and beech were placed in the tunnel which was operated at a wind speed of 2.5 m s 1. Beech leaves are smooth, whereas those of white poplar and nettle have hairs. The velocities of deposition to the leaves of the three species are shown in Table 6.1. As expected from the lower diffusivity of the larger particles, vg was less for the 0.2- m than for the 0.03-,am particles. Deposition to... 

The characteristic lengths of the leaves were 23 mm (nettle), 28 mm (white poplar), and 27 mm (beech). Using these values of L, the wind speed (2.5 ms-1) and the diffusivities as given in Table 6.1, the values of Sh can be calculated and the results are plotted in Fig. 6.1. Also shown are results of Belot (1975), who exposed oak leaves and pine needles to an aerosol of 0.17 m diameter uranine particles in a wind tunnel, and used the fluorescence of the dye to measure the deposition. The points from Belot s experiments and those of Little Wiffen he fairly close to the theoretical line, with the exception of the results of 0.2- m lead aerosol to nettle and white poplar. These latter show enhanced deposition, probably due to impaction on, or interception by, the hairs on the leaves. 

In Dr. Rea s book (see entry 328) you can also find a list of construction materials judged safe for MCS patients. The safest materials for MCS patients are, among others glass, stone, steel, ceramic, aluminum, untreated hardwood and untreated natural products. However, many kinds of wood can cause problems, particularly if the wood has been treated or impregnated, and some patients get sick from the resin which the wood may contain even when untreated. White poplar wood is very suitable for MCS patients, and is used, for example, in MCS saunas. 

The Heavenly Heat sauna is specially made for MCS patients out of white poplar wood, which does not make most MCS patients sick. It is a so-called Finnish dry sauna that is heated electrically, using stove with natural stones. The temperatures aren t as high as with a normal sauna, but that s actually better for an MCS patient and promotes detoxification. These sauna treatments can also be combined with Far Infrared therapy. 

Swedish Matches are made in Sweden almost exclusively of white poplar wood, it being the cheapest. Blocks of the length of the match are cut by machinery from the round logs and splintered, the splints kiln-dried and ooated with paraffine. The end to be covered with the inflammable compound is dipped in a solution of paraffine in benaine, when they are again dried. They are then dipped into the inflammable compound, which should... 

Populus alba L./White poplar Populus deletoides Bartr. ex — 67 52... 

P. Made] on, T. Maranon, J.M. Murillo et al.. White Poplar (Populus Alba) As a Biomonitor of Trace Elements in Contaminated Riparian Forests, Environ. Pollut. 132(1), 145-155, Nov. (2004). 

Several archaeological excavations provided samples of waterlogged European oak (Quercus sp.), European ash Fraxinus excelsior L.), Dutch elm Ulmus campestris L.), white-poplar Populus alba L.), and European spruce Picea abies (L.) Karst). The timbers were 400-2000 years old and had been covered by marine sediments. Cross sections were cut from timbers 10-20 cm in diameter and samples were taken from macroscopically discernible zones of different states of degradation, as well as from the border between these zones (Figure 1). 

White-Poplar. Poplar is a diffuse porous wood composed of vessels surrounded by fiber cells. There are rays, and a few axial parenchyma strands along the border of the annual rings, but on the whole it is a more homogeneous wood than the species examined so far. 

Table IV Analysis of Liquid Products Brockville White Poplar Spruce Red Maple lEA Poplar...

Peter, G., Tornai-Lehoczki, ]., and Dlauchy, D. (2009) Ogataea populialbae sp. nov., a yeast species from white poplar. FEMS Yeast Res., 9, 936—941. 

Each capsule eontains Horsetail Herb, White Poplar Baric, Dogwood Berry and Sehizsandra Berry. BAA. 

Capsule content Equisetum arvense L., White Poplar Bark, Hypericum perforatum L. flowers. Dogwood Berry, Schisandra chinensis Baill (Turez), Matricaria recutita (L.) extract. 

Northeast spmce and fir hemlock, tamarack, and white pine oak, hickory, and maple aspen and poplar... 

Sahcyl alcohol [90-01-7] (saligenin, o-hydroxybenzyl alcohol) crystallizes from water in the form of needles or white rhombic crystals. It occurs in nature as the bitter glycoside, saUcin [138-52-3] which is isolated from the bark of Salix helix S. pentandra S. praecos some other species of willow trees, and the bark of a number of species of poplar trees such as Folpulus balsamifera P. candicans and P. nigra. 

Small, yellow-white, wingless, waxy pests with dark spots on the abdomen, found among lettuce roots during summer. Overwinters mainly on Lombardy poplar, moving in June to lettuce and sow-thistle. Root colonies can persist into winter, and may survive in the soil until the next season. See a/so Aphids. 

Hardwood species such as oaks, poplars, aspen, and ironwood are generally isoprene emitters. However, even within plant families, not all species are isoprene emitters. For example, while North American oaks emit isoprene, many European oak species do not. For example, Steinbrecher et al. (1997) measured the emissions of isoprene and monoterpenes from five species of Mediterranean oak two of them were strong isoprene emitters, whereas the other three did not emit significant amounts. Similarly, Kesselmeier et al. (1998) measured emissions of isoprene and monoterpenes from a Holm oak and a white oak growing side by side the white oak was a strong isoprene emitter, whereas the Holm oak was a strong monoterpene emitter. 

It is very important to select a suitable type of wood for the manufacture of the charcoal used in blackpowder. It must be soft, but not resinous and should be prepared from white wood of such trees as alder, poplar, willow, hazel etc. Before carbonization the wood must be de-barked and cut into pieces 10-30 mm thick. In some countries where hemp is plentiful the stems of this plant are used for making charcoal. 

Further work in Canada to produce rigid wet-process insulation boards from a bark-wood mixture was reported by Branion in 1961 (36). He made boards containing 85% poplar wood and 15% white spruce bark a few boards were made with added poplar or jack pine bark. White spruce bark worked best it appeared to cause a significant increase in tensile strength compared to boards made from 100% poplar wood fiber. This effect also was demonstrated in a hardboard. Other boards were made with up to 80% bark. Water absorption decreased as bark content increased. An effort was made to discover the bark ingredient responsible for the strength increase. After a series of extractions, the active component was concluded to be present in the holocellulose. 

Renewed interest in bark particleboard was evidenced by a short article written by Murphey and Rishel (39). They reported results of preliminary studies on relative strengths of various bark species compared to aspen flakeboard. Bark species included aspen, black locust, green oak, white pine, oak and locust, poplar, red oak, and mixed oak. Overlaying was suggested as a means of increasing bending strengths. 

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