Results 61 to 70 of about 5,539,134 (182)

Analysis of Lipophilic Constituents Related to Heartwood Formation in Young Swietenia mahagoni (L.) Jacq Trees

Journal of the Korean Wood Science and Technology
Swietenia mahagoni is one of the commercial timbers in Indonesia. Mahogany heartwood is an important characteristic as it relates to the natural durability and aesthetics of the wood.
Rizki Arisandi, Koetsu Takahashi, A. Nirsatmanto, S. Sunarti, A. Rimbawanto, Asri Insiana Putri, N. K. Kartikawati, L. Haryjanto, Toni Herawan, F. Lestari, G. Lukmandaru   +10 more
semanticscholar   +1 more source

Alleviation of phosphorus rather than nitrogen limitation driven by permafrost and landscape effects on Dahurian larch forests

Functional Ecology, Volume 40, Issue 8, Page 2590-2601, August 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu, Liang Shi, Zhaopeng Song, Boyi Liang, Honglin He, Kun Yang, Weihua Zhang, Lisha Lyu, Anatoly S. Prokushkin, Hongyan Liu   +9 more
wiley   +1 more source

The proportion of heartwood in conifer (Pinus sylvestris L., Picea abies [L.] H. Karst.) trunks and its influence on trunk wood moisture -

Journal of Forest Science, 2013
As the tree age increases, the formation of heartwood takes place in the central part of the tree. Since there is a large difference in the moisture content between sapwood and heartwood in conifers, the proportion of heartwood expressed in percentage is
M. Millers
doaj   +1 more source

Ring‐Width Dendrochronology, Isotopic Dendrochronology and Radiocarbon Dating of Timbers From the Spire Scaffold of Salisbury Cathedral, Wiltshire, England

Archaeometry, Volume 68, Issue 4, Page 761-772, August 2026.
ABSTRACT Ten timbers from the spire scaffold of Salisbury Cathedral were dated using a combination of ring‐width dendrochronology, stable oxygen isotopic dendrochronology and radiocarbon dating. Seven timbers were coeval and assigned a combined empirical felling date range of 1352–1378, which was further refined to 1351–1359 (OxCal 95.4%).
Kutsi D. Akcicek, Daniel Miles, Christopher Bronk Ramsey, Darren Davies, Danny McCarroll, Neil J. Loader   +5 more
wiley   +1 more source

Evaluation of immunomodulatory activity of " Shirishavaleha"-An Ayurvedic compound formulation in albino rats

Journal of Ayurveda and Integrative Medicine, 2011
The immunomodulatory activity of Shirishavaleha prepared from two different parts of Shirisha (Albizia lebbeck Benth), i.e., Twak (Bark) and Sara (Heartwood) as main ingredients was evaluated for humoral antibody formation and cell-mediated immunity in ...
Shyamlal Singh Yadav, Galib, P K Prajapati, B K Ashok, B Ravishankar   +4 more
doaj   +1 more source

Comparative Metabolomics and Transcriptome Analysis Reveal the Fragrance-Related Metabolite Formation in Phoebe zhennan Wood

Molecules, 2023
Nanmu (Phoebe zhennan) has a unique fragrance and is a high-quality tree species for forest conservation. The types and contents of volatile compounds in different tissues of nanmu wood are different, and the study of its volatile metabolites can help us
Hanbo Yang, Fang Wang, Wenna An, Yunjie Gu, Yongze Jiang, Hongying Guo, Minhao Liu, Jian Peng, Bo Jiang, Xueqin Wan, Lianghua Chen, Xiong Huang, Fang He, Peng Zhu   +13 more
doaj   +1 more source

Chemical Characterization and In Vivo Safety Assessment of Aqueous Extract From Anacardium occidentale L. (Anacardiaceae) Leaves

Chemistry &Biodiversity, Volume 23, Issue 7, July 2026.
Anacardium occidentale leaf aqueous extract showed rich polyphenolic composition, including flavonoids, tannins, and phenolic acids. Acute toxicity in mice revealed no mortality or adverse effects, with LD50 >2000 mg/kg and GHS Class 5. Genotoxicity assays were negative, supporting safety and potential phytopharmaceutical development, pending chronic ...
Elinado Francisco de Lima Bento, Caio Everton Nunes da Silva, Talita Giselly dos Santos Souza, Camylla Janiele Lucas Tenório, Natanael Teles Ramos de Lima, Cristiano Aparecido Chagas, José Maria Barbosa Filho, Magda Rhayanny Assunção Ferreira, Luiz Alberto Lira Soares, Samuel Paulo Cibulski, Alisson Macário de Oliveira, Thiago Henrique Napoleão   +11 more
wiley   +1 more source

Radial and Vertical Distribution of Dissoluble Total Carbohydrate Content in the Beech (Fagus sylvatica L.): Relationships with Red Heartwood Formation

Acta Silvatica et Lignaria Hungarica
Red heartwood forms in most old beech stands, which reduces the commercial value of the wood considerably. Many of the chemical and biochemical processes involved in red heartwood formation are known, but research has been limited to a single level of ...
Eszter Visi-Rajczi, Tamás Hofmann, Levente Albert   +2 more
semanticscholar   +1 more source

Simulated CO2 Fertilization Drives Progressive Phosphorus Limitation via Accelerated Organic Cycling in Amazonian Forests

Global Change Biology, Volume 32, Issue 7, July 2026.
Rising atmospheric CO2 increases phosphorus demand in Amazon forests. Using a microbial‐explicit land model in low and high phosphorus Amazonian forest sites, we show that low‐phosphorus forests increasingly rely on organic phosphorus cycling to sustain productivity.
Katrin Fleischer, Lin Yu, Lucia Fuchslueger, Carlos A. Quesada, Sönke Zaehle   +4 more
wiley   +1 more source

Tree stem methane emissions are regulated by site‐level biogeochemistry over species identity in Amazon floodplain forests

New Phytologist, Volume 251, Issue 1, Page 179-190, July 2026.
Summary Tree stems in Amazonian floodplains emit substantial methane (CH4), yet controls on emission variability remain unclear. Emissions span orders of magnitude between várzea (nutrient‐rich) and igapó (nutrient‐poor) forests and among trees, suggesting controls beyond flooding.
Holly R. Blincow, Niall P. McNamara, Dafydd M. O. Elias, Carla Gomez, Jack Lamb, Rodrigo Nunes de Sousa, Darlene Gris, Leonardo Pequeno Reis, Alison M. Hoyt, Sunitha Rao Pangala   +9 more
wiley   +1 more source