Results 31 to 40 of about 1,067,691 (309)

Robust Tree-Ring Detection [PDF]

, 2007
The study of tree-rings is a common task in dendrology. Usually the rings deliver information about the age of the tree, historic climate conditions and forest densities. Many different techniques exist to perform the tree-ring detection, but they commonly are semi-automatic.
Mauricio Cerda, Nancy Hitschfeld-Kahler, Domingo Mery   +2 more
openaire   +3 more sources

NEUTROSOPHIC RINGS [PDF]

, 2006
In this book we define the new notion of neutrosophic rings. The motivation for this study is two-fold. Firstly, the classes of neutrosophic rings defined in this book are generalization of the two well-known classes of rings: group rings and semigroup ...
Vasantha, Kandasamy, Kandasamy, W.B. Vasantha, Smarandache, Florentin   +2 more
core   +1 more source

The climatic signal in tree rings of the common oak (Quercus robur L.) on the south-eastern border of its range in the Ural River basin, Russia

Юг России: экология, развитие, 2023
Aim. The objective of this study was to identify and analyze the climatic signal contained in the tree-rings of common oak on the southeastern border of its range in Russia (Ural River basin).Material and Methods.
S. E. Kucherov, S. V. Kucherova, V. B. Martynenko, P. V. Velmovskiy   +3 more
doaj   +1 more source

Resilience of Pinus durangensis Martínez in Extreme Drought Periods: Vertical and Horizontal Response of Tree Rings

Atmosphere, 2022
Extreme drought events reduce the productivity of forest ecosystems. One approach for estimating the effects of drought on forests is by assessing their resilience.
Citlalli Cabral-Alemán, José Villanueva-Díaz, Gerónimo Quiñonez-Barraza, Armando Gómez-Guerrero   +3 more
doaj   +1 more source

Smarandache rings [PDF]

, 2002
Over the past 25 years, I have been immersed in research in Algebra and more particularly in ring theory. I embarked on writing this book on Smarandache rings (Srings) specially to motivate both ring theorists and Smarandache algebraists to develop and ...
Vasantha, Kandasamy
core   +1 more source

The significance of compression wood in restoration of the leader in Pinus sihestris L. damaged by moose (Alces alces). II. Structure of growth rings in regenerating stems in relation to juvenile wood formation

Acta Societatis Botanicorum Poloniae, 2015
The corewood of pine ds very prone to compression wood formation, this changing the whole pattern of the tree ring structure and the siz.es of early and late wood. Compression wood always increases the formation of late wood at the expense of early wood.
B. A. Molski
doaj   +1 more source

Survival, growth and carbon content in a forest plantation established after a clear-cutting in Durango, Mexico [PDF]

PeerJ, 2020
Background Forest plantations play an important role in carbon sequestration, helping to mitigate climate change. In this study, survival, biomass, growth rings and annual carbon content storage were evaluated in a mixed Pinus durangensis and P.
Jesús Alejandro Soto-Cervantes, Artemio Carrillo-Parra, Rodrigo Rodríguez-Laguna, José Javier Corral-Rivas, Marín Pompa-García, Pedro Antonio Dominguez-Calleros   +5 more
doaj   +2 more sources

Snowpack signals in North American tree rings

Environmental Research Letters, 2021
Climate change has contributed to recent declines in mountain snowpack and earlier runoff, which in turn have intensified hydrological droughts in western North America.
Bethany L Coulthard, Kevin J Anchukaitis, Gregory T Pederson, Edward Cook, Jeremy Littell, Dan J Smith   +5 more
doaj   +1 more source

To extract or not to extract? Influence of chemical extraction treatment of wood samples on element concentrations in tree-rings measured by X-ray fluorescence

Frontiers in Environmental Science, 2023
In micro-densitometry of wood it is standard procedure to extract resin and other soluble compounds before X-ray analysis to eliminate the influence of these extractives on wood-density.
T. Scharnweber, E. Rocha, A. González Arrojo, S. Ahlgrimm, B. E. Gunnarson, S. Holzkämper, M. Wilmking   +6 more
doaj   +1 more source

The Influence of Rainfall and Temperature on Radial Growth of Urban Trees Under the Impact of Steel Industry Pollution

BioResources, 2023
The aim of this study was to analyze the growth rings and evaluate the effect of the urban environment on the growth of Terminalia catappa L. under intense industrial activity.
Thayanne Caroline Castor Neto, José Luis Penetra Cerveira Lousada, Cláudia Fontana, Carolina Gomes Moreira, João Vicente de Figueiredo Latorraca   +4 more
doaj   +2 more sources