annual ring
Disturbances in variation of the annual ring width of Norway spruce in the Polish Western Beskids Mountains
... tree annual ring width of a given taxon may be, among other things, the basis for determination of its site requirements, spatial diversification of growth re- sponses and environmental ...
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Variability of fracture toughness by the crack tip position in an annual ring of coniferous wood
... The effects of the location of the crack tip in an annual ring and the direction of crack propagation on the fracture toughness of the TR crack propagation system of coniferou[r] ...
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Annual ring orientation effect on bending strength of subfossil elm wood
... Figure 2 shows sampling method for the wood speci- mens for bending test on the cross section of the subfossil elm trunk. An average annual ring width in this area was 1.05 mm. Two sets of samples were ...
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Effect of growth on wood properties for Japanese larch (Larix kaempferi): Differences of annual ring structure between corewood and outerwood
... 4 addressed the variations of radial growth and wood quality among provenances in Japanese larch and reported that in both corewood and outerwood the average ring [r] ...
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Distribution of lignin and lignin precursors in differentiating xylem of Japanese cypress and poplar
... Abstract Lignin is an integral component of the cell wall of vascular plants. The mechanism of supply of lignin precursors from the cytosol into the cell wall of differen- tiating xylem has not yet been elucidated. The ...
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The effect of bark decortication for hiwada production on xylem and phloem formation in Chamaecyparis obtusa
... eight annual rings from the cambium in the xylem, all an- nual rings from the cambium in the inner bark, and several annual rings in the outer bark were observed by light micro- scopy (Eclipse E600; Nikon, ...
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Effect of grain direction on transmittance of 100-GHz millimeter wave for hinoki (Chamaecyparis obtusa)
... The former method is better than the latter in terms of accuracy when measuring the permittivity because the elec- tric fi eld is more stable in and around the specimen in the waveguide, and the free electric fi eld used ...
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Evaluation of rolling shear modulus and strength of Japanese cedar cross-laminated timber (CLT) laminae
... Images of the cross-section of each sample were cap- tured using a flatbed scanner to measure the geometrical features of the annual ring patterns. Circles were fitted onto the points on the annual ...
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Effects of geo-ecological conditions on larch wood variations in the North European part of Russia (Arkhangelsk region)
... in terms of the latewood content, density and annual ring width of the growth rings. Wood macrostructure of larch wood has the same values in forests growing in the sub-tundra and middle taiga. A possible ...
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Influence of morphometric parameters of relief on macro- and microstructure of wood Pinus silvestris L. in the North of the Russian plain
... The highest latewood content was noted in the cowberry pine (SP5) and the highest annual ring width in the cowberry pine (SP6). The tracheid wall thickness in early- and latewood does not differ in bilberry ...
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Geographical variations of lumber quality of Larix sibirica naturally grown in five different provenances of Mongolia
... as annual ring width, knots size, existence and size of holes, slope of grain, deformation (bow, crook, and twist), wane, and crack, were measured on surfaces of a lumber as described in Japan Agriculture ...
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Broadband Design of Planar Circularly Polarized Annular-Ring Antenna for RFID Applications
... circular ring microstrip line through multiple slots [4], asymmetric-circular shaped slotted microstrip antenna [5], a circularly polarized patch antenna fed by four probes connecting with the phase shifters of 90 ...
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Effect of annual rings on transmission of 100 GHz millimeter waves through wood
... The complex amplitude was measured for 2 mm thick flat- (LT) and quarter-sawn (LR) wood specimens with different annual ring structures, of which the density distribution was measured using X-ray ...
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Does Cedrela always form annual rings? Testing ring periodicity across South America using radiocarbon dating
... narrow ring followed by a wide ring, possibly indicating the presence of non-annual rings ...single annual ring and dated ...of ring-width patterns between trees ...
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Wood properties and their among-family variations in 10 open-pollinated families of Picea jezoensis
... 30th annual ring from the pith and at every five annual rings (Table ...1st–5th annual ring from the ...15th annual ring from the pith) and outer wood (after the 15th ...
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Wood transverse fracture analysis at the mesoscopic scale
... It is the first step of observation. The crack tip is situated in the earlywood zone and tends to propagate in the last latewood zone. The second step of observation occurs after the secondary crack apparition and ...
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Effect of annual rings on abrasive wear property of wood
... Regarding the abrasive wear property of Douglas fir, in specimens with the same dimensions but different annual ring widths, the dispersion of the wear coefficient in[r] ...
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Mechanism for deformation of wood as a honeycomb structure I: Effect of anatomy on the initial deformation process during radial compression
... The first fractured cells had a tendency to have the smallest percentage of cell wall within an annual ring, and the cells suffered shearing deformation in a radial[r] ...
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Dannenberg_unc_0153D_16762.pdf
... (1) Improving tree-ring-based reconstructions of past climate. Tree rings are effective proxies for past climate only when they are limited by their local environment. In other words, dendroclimatic ...
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Type conditions of stable range for identification of qualitative generalized classes of rings
... a ring is the sum of a regular element and an idempotent ...a ring R is called (von Neumann) regular element, if axa = a for some element x ∈ ...a ring R is called a left (right) semihereditary ...
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