Results 31 to 40 of about 1,377,490 (277)

Nonadiabatic current generation in a finite width semiconductor ring [PDF]

open access: yesPhysical Review B, 2003
LaTeX, 4 pages with included eps ...
Gudmundsson, Vidar   +2 more
openaire   +2 more sources

Dendroindication of ecoclimatic condition in forest remediation area within Northern Steppe of Ukraine

open access: yesRegulatory Mechanisms in Biosystems, 2019
We analyzed ring width, latewood width and earlywood width of Pinus sylvestris trees under normal and flood condition in Dnipropetrovsk region, within Northern Steppe of Ukraine.
Y. I. Gritsan   +3 more
doaj   +1 more source

Solar variability and width of tree ring

open access: yesAstrophysics and Space Sciences Transactions, 2011
The relationship between solar activity and the global climate is not only an academically interesting problem but also an important subject for human beings. We have found an interesting relation that may be connected with above profound problem. We have analyzed the tree rings that had survived for 391 years in Japan.
Muraki, Y.   +4 more
openaire   +2 more sources

VARATION OF RINGS WIDTH AND LTS EFFECT ON WOOD SPECIFIC GRAVITY OF Pinus brutia TEN. AND Cupressus sempervirens VAR. Pyramidalis TOZZ. TREES GROWN IN NINAVAH PLANTATION [PDF]

open access: yesMesopotamia Journal of Agriculture, 2018
Four trees growing in Ninavah plantation were chosen, two of them are Pinus brutiaTen.and the others are Cupressus sempervirens var. pyramidalis Tozz..
Talal Al-Takay
doaj   +1 more source

Influence of position within the tree stem according to growth-ring width of spruce (Picea abies /L./ KARST.) with compression wood

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2004
The work was focused on problematics of annual-rings width according to position within the tree stem. Annual-ring widths, ratio of late wood and early wood by spruce with compression wood were investigated.
Vladimír Gryc, Jiří Holan
doaj   +1 more source

Cycle Analysis Method of Tree Ring and Solar Activity Based on Variational Mode Decomposition and Hilbert Transform

open access: yesAdvances in Meteorology, 2019
According to the correlation of tree ring and solar activity, the cycle analysis method based on variational mode decomposition (VMD) and Hilbert transform is proposed.
Guohui Li, Mengtao Zheng, Hong Yang
doaj   +1 more source

Spring-Summer Drought Induces Extremely Low Radial Growth Reactions in North-Tyrrhenian Pinus pinea L.

open access: yesFloresta e Ambiente, 2020
Climate projections predict shifts in environmental conditions, with cascade effects on forest growth dynamics. As such, Pinus pinea L., an ecologically important low-elevation Mediterranean tree, can be threatened by drought events.
Sergio Piraino, Fidel Alejandro Roig
doaj   +1 more source

Effects of geo-ecological conditions on larch wood variations in the North European part of Russia (Arkhangelsk region)

open access: yesJournal of Forest Science, 2017
The present study examines the macrostructure and density of larch wood and possible influences on the productivity of larch stands. The studies were conducted in the middle and sub-tundra taiga in the Arkhangelsk region.
Nikolay A. NEVEROV   +6 more
doaj   +1 more source

PICEA SCHRENKIANA RING WIDTH AND DENSITY AT THE UPPER AND LOWER TREE LIMITS IN THE TIEN SHAN MTS (KYRGYZ REPUBLIC) AS A SOURCE OF PALEOCLIMATIC INFORMATION

open access: yesGeography, Environment, Sustainability, 2014
We present here the results of spruce (Picea schrenkiana Fish. et May.) tree-ring research in the Tien Shan Mountains, Kirgiz Republic. We explore the connection between climatic parameters and spruce ring width and maximum density at the upper and lower
Olga Solomina   +2 more
doaj   +1 more source

Signals and memory in tree-ring width and density data

open access: yesDendrochronologia, 2015
It has been suggested that maximum latewood density (MXD) should be used instead of tree-ring width (TRW) data to reconstruct post-volcanic cooling effects. A thorough assessment of high frequency signals and potentially differing memory effects in long MXD and TRW chronologies, in response to large volcanic eruptions, is still missing, however.
Esper, Jan   +4 more
openaire   +4 more sources

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