Results 1 to 10 of about 1,377,490 (277)

Oligarchic Growth of Protoplanets in Planetesimal Rings

open access: yesThe Astrophysical Journal
In the standard planet formation scenario, planetesimals are assumed to form throughout the protoplanetary disk and to be smoothly distributed in the radial direction except for the snowline.
Yuki Kambara, Eiichiro Kokubo
doaj   +1 more source

Tree-Ring Width And Its Interrelation With Environmental Parameters: Case Study In Central Hungary

open access: yesJournal of Environmental Geography, 2015
Tree ring width is influenced by several internal and external factors, among which climate became one of the most dominant due to the altering conditions and patterns of precipitation and temperature.
Ladányi Zsuzsanna, Blanka Viktória
doaj   +1 more source

Performance analysis of octal rings as mechanical force transducers

open access: yesAlexandria Engineering Journal, 2015
The present work analyzes the characteristics of octal rings as mechanical force transducers. It uses a finite element model of the ring to determine its state of strain upon the application of load.
Essam Soliman
doaj   +1 more source

Growth rate and ring width variability of teak, Tectona grandis (Verbenaceae) in an unmanaged forest in East Timor

open access: yesRevista de Biología Tropical, 2012
Teak (Tectona grandis) is one of the most valuable timbers in international trade and an important species for tropical forestry. Teak is found on the island of East Timor but no information is available on teak growth from this region.
Vicelina B. Sousa   +3 more
doaj   +2 more sources

Selected properties of Blue spruce wood from non-forest land

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2009
The aim of this work was to carry out a tree-ring analysis, to determine density, shrinkage and compressive strength parallel to the grain of Blue spruce (Picea pungens Engelm.) wood. Results of this work were specific due to the non-forest origin of the
Vladimír Gryc   +2 more
doaj   +1 more source

An interactive method for digital tree-ring width measurement [PDF]

open access: yesGeofísica Internacional, 2004
We present a new interactive method for tree-ring width determination. It uses a high resolution scanner and a PC. A program to process scanned tree-ring images was developed in Interactive Data Language (IDL 5.0) environment.
Alan Prestes   +4 more
doaj  

Detrending ability of several regression equations in tree-ring research: a case study based on tree-ring data of Norway spruce (Picea abies [L.])

open access: yesJournal of Forest Science, 2011
The aim of this study was to investigate tree-ring width variability and to distinguish groups of trees with similar growth trends in order to study tree growth responses to various stand and site conditions. The methods of cluster analysis were employed
M. Bošeľa, L. Kulla, R. Marušák
doaj   +1 more source

Paired analysis of tree ring width and carbon isotopes indicates when controls on tropical tree growth change from light to water limitations. [PDF]

open access: yesTree Physiol, 2022
Brienen R   +8 more
europepmc   +1 more source

Dendrochronological assessment of climate risks for the restoration of oak forests in the Ukrainian Polissya

open access: yesUkrainian Journal of Forest and Wood Science
The deterioration of climatic conditions caused by global warming poses a threat to the sustainable development of forest ecosystems, particularly oak stands, which are an important component of Ukraine’s forestry sector.
R. Oliynyk   +3 more
doaj   +1 more source

CLIMATE SIGNAL IN THE RING WIDTH, DENSITY AND CARBON STABLE ISOTOPES IN PINE (PINUS SILVESTRIS L.) IN CENTRAL CAUCASUS

open access: yesGeography, Environment, Sustainability, 2010
Variability of width, maximum density and stable isotopes (δ13C) in tree-rings of Scots pine (Pinus sylvestris L.) were studied in Northern Caucasus.
Enrico Brugnoli   +3 more
doaj   +1 more source

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