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Start Over Coverage 289-292

1. Comparative characteristics of growth and photosynthesis of sun and shade leaves from normal and pendulum walnut (Juglans regia L.) trees

Creator:
Atanasova, L., Stefanov, D., Yordanov, I., Kornova, K., and Kavardzikov, L.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
carotenoids, chlorophyll a fluorescence, growth habit, leaf dimension, oxidative index, and pigments
Language:
Multiple languages
Description:
Pendulum walnut leaves exhibited various adaptive responses related to the regulation of photon interception such as specific downward orientation, greater leaf area, and larger pigment pool. Changes in the regulation of PS2 such as higher thermal dissipation (NPQ) and lower quantum efficiency (ΦPS2) that protect the photosynthetic apparatus against damages were also found. The growth and photosynthetic features of pendulum walnut leaf are interpreted as adaptations that allow the pendulum walnut tree to compensate the impaired ability by appropriate growth to ensure the energy needs for photosynthesis, respectively for biomass formation. and L. Atanasova ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Large scale galactic shocks in barred galaxies

Creator:
Lindblad, Per Olof and Jörsäter, Steven
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
space research, galactic shocks, and large intensity gradients
Language:
Czech
Description:
Detectors like the IPCS and CCD make it possible to study strong velocity gradients at high spatial resolution even in the presence of large intensity gradients. Strong velocity gradients indicating galactic shocks have been found in NGC 1365 at the inner side of a spiral arm, at the leading edges of the bar, and in the nuclear region. The shocks in the nuclear region are suggested to be caused by rapid twisting of closed orbits at the position of the ILR.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. The use of a portable non-destructive type nitrogen meter for leaves of woody plants in field studies

Creator:
Ichie, T., Kitahashi, Y., Matsuki, S., Maruyama, Y., and Koike, T.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Agriexpert PPW-3000, chlorophyll, comparison of methods, and SPAD-502
Language:
Multiple languages
Description:
The practicality of the portable, non-destructive type nitrogen meter (Agriexpert PPW-3000) was tested on ten forest species. Also investigated was the potential relationship between leaf nitrogen and chlorophyll (Chl) contents and the readings taken with the PPW-3000 and a Chl meter (SPAD-502). There was a significantly positive correlation between the readings of PPW-3000 and N content in the same leaves, whereas the correlation between leaf Chl content and the PPW-3000 values was less positive. Similarly there was a significant positive correlation between actual Chl content and the SPAD-502 readings and the less positive correlation between actual N content and the SPAD-502 readings. Thus using both the PPW-3000 and SPAD-502 enables to determine leaf N and Chl contents simply and non-destructively in the field. and T. Ichie ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public