Báo cáo lâm nghiệp: "Radial variation of wood density components and ring width in cork oak trees" pptx
Báo cáo lâm nghiệp: "Radial variation of wood density components and ring width in cork oak trees" pptx
... effect of bark stripping on wood produc-
tionincorkoak(Quercus suber L.) and problems of growth ring
definition, in: Pereira H. (Ed.), Cork oak and cork, Proceedings of
the European Conference on Cork ... average ring density; MND, minimum density; MXD, maximum density; EWD, earlywood density, LWD, latewood density; RW, ring width; LWP,
latewood percentage; HI, h...
Báo cáo lâm nghiệp: "Genetic variation of wood density components in a radiata pine progeny test located in the south of Chile" pps
... heritabilities of latewood density initially decreased from
the pith until ring 12 and then increased until ring 18, while ear-
lywood density followed an oscillating pattern of variation. In
their study of ... continuous line representing F = 1.56, and
P < 0.05. (A) ED and LD; (B) EA, LA and LP.
Genetic variation within ring wood density 113
latewood), an...
Báo cáo lâm nghiệp: "Health status of forest stands on permanent research plots in the Krkonoše Mts" pptx
... pollutants in synergism with
the intensive sucking of the beech scale. e trend
of foliage stabilized in 1992–2003 while defolia-
tion markedly increased again in 2004 and 2005.
e trend of defoliation ...
were summarized in many publications and were
evaluated from diff erent points of view, especially
regarding the structure and development of stands,
includin...
Báo cáo lâm nghiệp:"Genetic correlations between wood density components in Pinus pinaster Ait." pptx
... “Being
negatively correlated with Earlywood Width and positively
with Latewood Width, tree average Ring Density appears to
Figure 2. Regression plot between Ring Width (RW) and Average Ring Density ... = Average Ring Density; MND = Minimum Density; MXD = Maximum Density; EWD = Earlywood Density; LWD = Latewood Density; LWP =
Latewood Percentage; RW = Ring Width;...
Báo cáo lâm nghiệp: "Antioxidant properties of wood extracts and colour stability of woods" pps
... spectra of methanol solutions of 1.0 10
−4
M
DPPH and of oak extract at 0.3, 1.0, and 3.0 g L
−1
.
Figure 2. Absorbance at 520 nm during reaction of 1.0 10
−4
M DPPH
and1 .0gL
−1
oak extract in methanol ... differ-
ent methods of measuring antioxidant capacity: inhibition of
methyl linoleate autoxidation, rate constant of reaction of
DPPH with wood extracts, and...
Báo cáo lâm nghiệp: "Genetic variation of Prunus avium in susceptibility to cherry leaf spot (Blumeriella jaapii) in spatially heterogeneous infected seed orchards" docx
... is
now increasingly planted in Europe, both in afforestation of
abandoned farmland and enrichment of forests [26]. In Gali-
cia (NW Spain) a long term breeding program for this species
was started in ... suspected,
since the infection of this disease occurs through stomata in
early spring. Bud burst explained some of the variation in leaf
spot incidence (17–65% of the...
Báo cáo lâm nghiệp: "Radial distribution of sap flux density in trunks of a mature beech stand" pot
... precipitation deficit of about 100 mm with minimum soil
moisture values occurring during summer. In contrast, during
2004 soil water content remained high. The mean values of rel-
ative humidity of the air ... vary to a large extent depending on wood
anatomy. Trees with ring- porous sapwood, e.g. oak, often con-
duct water in only the outermost annual growth rings [13].
In cont...
Báo cáo lâm nghiệp: "Online control of wood peeling process: Acoustical and vibratory measurements of lathe checks frequency" ppt
... Links between wood machining phenom-
ena and wood mechanical properties : The case of 0
◦
/90
◦
orthog-
onal cutting of green wood, Proceedings of the 2nd International
Symposium on Wood Machining, ... Murase Y., Relation
between veneer quality and peeling sound in peeling of sugi,
Proceedings of the 14th International Wood Machining Seminar,
Paris-Épinal-Cluny, 12–19...
Báo cáo lâm nghiệp: "Genetic variation of Tunisian Myrtus communis L. (Myrtaceae) populations assessed by isozymes and RAPDs" pptx
... ulmifolius Schott. and Calycotome
villosa (Poiret) Link.
In the three areas, populations are more and more disturbed
and fragmented as a result of an increasing clearing, over-
grazing and overexploitation. ... the number of bands shared by samples x and y,andm
x
and m
y
are the number of bands in samples x and y, respectively. Genetic dis-
tance (D) was estimated usin...
Báo cáo lâm nghiệp: "Genetic variation of Pinus pinaster Ait. seedlings in susceptibility to the pine weevil Hylobius abietis L." docx
... Particularly, the
resin canals appearing in the bark of conifers constitute a phys-
ical and chemical barrier to the insect, and the characteristics
of those resin canals of Picea spp. have been ... in inte-
rior spruce, Can. J. For. Res. 34 (2004) 855–862.
[44] Wainhouse D., Hylobius abietis – host utilisation and resistance, in:
F. Lieutier et al. (Eds.), Bark and wood...