Results 31 to 40 of about 1,368,146 (280)

Elemental Variability in Stems of Pinus sylvestris L.: Whether a Single Core Can Represent All the Stem

Diversity, 2023
In dendrochemical studies, an analysis of wooden cores extracted from tree stems is a widely spread research method. A methodological problem is related to the method: whether a single core per tree can be representative of all the stems. The study aimed
Vladimir L. Gavrikov, Alexey I. Fertikov, Vladimir E. Vidus, Ruslan A. Sharafutdinov, Eugene A. Vaganov   +4 more
doaj   +1 more source

Variation of major elements and heavy metals occurrence in hybrid aspen (Populus tremuloides Michx. × P. tremula L.) tree rings in marginal land

iForest - Biogeosciences and Forestry, 2020
Fast growing tree species such as Populus spp. in short rotation woody crop (SRWC) systems could be an environmentally friendly and cost-effective approach to ensure sustainable biomass production and mitigate the negative impacts on the environment ...
Bardule A, Bertins M, Busa L, Lazdina D, Viksna A, Tvrdonova M, Kanicky V, Vaculovic T   +7 more
doaj   +1 more source

Comparing Approaches for Reconstructing Groundwater Levels in the Mountainous Regions of Interior British Columbia, Canada, Using Tree Ring Widths

Atmosphere, 2020
Observed groundwater level records are relatively short (
Stephanie C. Hunter, Diana M. Allen, Karen E. Kohfeld   +2 more
doaj   +1 more source

Projected changes in early summer ridging and drought over the Central Plains

Environmental Research Letters, 2022
Early summer (May–June–July; MJJ) droughts over the Central Plains are often caused by atmospheric ridging, but it is uncertain if these events will increase in frequency or if their influence on drought severity will change in a warming world.
Benjamin I Cook, A Park Williams, Kate Marvel   +2 more
doaj   +1 more source

Historical Forest Management Practices Influence Tree-Ring Based Climate Reconstructions

Frontiers in Ecology and Evolution, 2021
Tree-ring widths (TRW) of historical and archeological wood provide crucial proxies, frequently used for high-resolution multi-millennial paleoclimate reconstructions.
Georgios Skiadaresis, Bernhard Muigg, Bernhard Muigg, Willy Tegel, Willy Tegel   +4 more
doaj   +1 more source

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 human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Laser Photoacoustic Detection of CO2 in Old Disc Tree-Rings

Sensors, 2010
A homemade CO2–laser photoacoustic spectrometer has been used for monitoring CO2 in gas samples extracted under vacuum from the wood of old spruce disc tree-rings for a ~60 year series.
Boris Ageev, Yurii Ponomarev, Valeria Sapozhnikova   +2 more
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Tree-Ring Skeleton Plotting by Computer

, 1979
Skeleton plotting is an established manual technique for representing the relative narrowness of tree rings in a single radius. These plots can be used as a visual aid to crossdating.
Cropper, John Philip
core   +4 more sources