Results 31 to 40 of about 23,679 (205)

A Comprehensive Review on Bioactive Compounds Found in Caesalpinia sappan

open access: yesMolecules, 2023
Sappan wood (Caesalpinia sappan) is a tropical hardwood tree found in Southeast Asia. Sappan wood contains a water-soluble compound, which imparts a red color named brazilin.
Twinkle Vij   +8 more
doaj   +1 more source

A Comparison of Unbleached Pulps from Cherry Heartwood and Sapwood [PDF]

open access: yes, 1978
The purpose of the project was to evaluate pulps made from cherry heartwood and sapwood. The amount of heartwood a tree has is an individual trait of the tree rather than a function of geography or environment.
Bethke, Craig
core   +1 more source

Diterpenoid Diversity across Land Plants

open access: yesHelvetica Chimica Acta, EarlyView.
Here we bridge the knowledge of diterpene chemical diversity, biosynthesis, and evolution from nonvascular mosses and liverworts to that known from vascular plants. ABSTRACT The diverse array of diterpenoid natural products stems from the ease of manipulating the promiscuity of diterpene cyclases.
Anita Berg   +2 more
wiley   +1 more source

Analysis and evaluation of the impact of stand age on the occurrence and metamorphosis of red heartwood

open access: yesiForest - Biogeosciences and Forestry, 2017
The red heartwood of beech is responsible for decreasing the market value of the most important deciduous tree species of central Europe. The aims of this study were: (i) to verify the hypothesis that stand age affects the occurrence and metamorphosis of
Trenčiansky M   +3 more
doaj   +1 more source

Tracing radioactive cesium in stem wood of three Japanese conifer species 3 years after the Fukushima Dai-ichi Nuclear Power Plant accident

open access: yesJournal of Wood Science, 2020
To understand the dynamics of accident-derived radioactive cesium (137Cs) in stem wood that had a substantial amount of heartwood at the time of the Fukushima Dai-ichi Nuclear Power Plant accident, the radial and vertical distributions of 137Cs activity ...
Shinta Ohashi   +3 more
doaj   +1 more source

Trait‐Based Prediction of Extinction Risk and Conservation Strategy for Traditional Chinese Medicinal Plants in China 基于性状的中药植物灭绝风险预测与保护策略研究

open access: yesIntegrative Conservation, EarlyView.
Our research allows us to understand the predictors of extinction risk in traditional Chinese medicinal (TCM) plant species with known threat status, and incorporate this knowledge to predict other TCM plants with unknown conservation status in China so as to improve the overall effectiveness of conservation strategies.
Yuhan Zheng   +4 more
wiley   +1 more source

Epsomite as flame retardant treatment for wood: Preliminary study [PDF]

open access: yes, 2016
The effect of epsomite as flame retardant for wood has been investigated and compared with a commercial boron salt. Both flame retardants have been introduced into wood samples by vacuum impregnation.
Chimenos Ribera, Josep Maria   +5 more
core   +2 more sources

Community dynamics of lignicolous lichens on standing deadwood in a 275‐year chronosequence

open access: yesOikos, EarlyView.
Dead trees provide discrete habitat patches in which patch quality changes gradually due to wood decomposition. Although in most cases these patches persist for not more than a few decades, in some ecosystems deadwood decomposition and the consequent change in habitat patch quality can be a centuries‐long process, potentially leading to dynamics of ...
Aleksi Nirhamo   +4 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 -

open access: yesJournal 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

Tree crown architecture: a tool for decay resistance evaluation [PDF]

open access: yes, 2013
The variability of natural durability contributes to the bad perception of some wood end-users. In our search, we need to adjust our methods and strategies to estimate natural durability and extract higher value from wood resources.
Amissa Adima, Augustin   +5 more
core  

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