Results 71 to 80 of about 24,151 (223)
Microscopy Today, 1999 Abstract In Medieval Europe, manuscripts and formulas on the preparation of colors and dyes used by chemists and artists contained many references to natural plant extracts, The yellow stigmas of aromatic saffron (Crocus sativus) were crushed and used both as a medicine and colorant as far back as the ninth century BCE.
openaire +1 more source
Diterpenoid Diversity across Land Plants
Helvetica Chimica Acta, Volume 109, Issue 4, April 2026.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
A Generic Spinup Procedure to Initialize European Forest State Variables in Land Surface Models
Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.Abstract Forest structure is shaped by forest management practices, land‐use changes, and natural disturbances, including droughts, fires, storms, and insect outbreaks that drive species‐specific and size‐specific mortality. By modifying the carbon‐water‐energy exchanges with the atmosphere, it influences a stand's capacity to buffer against or succumb
Marine Remaud +6 more
wiley +1 more source
Antioxidant Activity of Caesalpinia sappan Heartwood
Biological and Pharmaceutical Bulletin, 2003 Antioxidant activity of Caesalpinia sappan heartwood was studied both by in vitro and in vivo models. The ethyl acetate, methanol and water extracts exhibited strong antioxidant activity as evidenced by the low IC50 values in both 1,1-diphenyl-2-picryl hydrazyl (DPPH) and nitric oxide methods.
Shrishailappa, Badami +4 more
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San Francisco Bay Area KIPP Schools: A Study of Early Implementation [PDF]
, 2006 Measures how well five San Francisco Bay Area schools have implemented the goals of the Knowledge Is Power Program during the first year of a three-year initiative to prepare underserved urban youth for ...
Alejandra Lopez-Torkos +5 more
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The watering of tall trees - Embolization and recovery [PDF]
, 2015 We can propound a thermo-mechanical understanding of the ascent of sap to the top of tall trees thanks to a comparison between experiments associated with the cohesion-tension theory and the disjoining pressure concept for liquid thin-films.
Gouin, Henri
core +6 more sources
, 1975 Discusses chemical treatments to increase wood's fire resistance and protect it from rot and ...
Percival, Donald H., Walters, Charles S.
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Integrative Conservation, Volume 5, Issue 1, Page 150-163, March 2026.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
Tree growth acceleration and expansion of alpine forests: The synergistic effect of atmospheric and edaphic change. [PDF]
, 2016 Many forest ecosystems have experienced recent declines in productivity; however, in some alpine regions, tree growth and forest expansion are increasing at marked rates.
Horwath, William R +5 more
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Limnology and Oceanography, Volume 71, Issue 3, March 2026.Abstract Tropical hydroelectric reservoirs are recognized hotspots for greenhouse gas emissions, yet the role of submerged forests in these emissions remains poorly understood. In this study, we investigated the contribution of standing dead trees and their associated epixylic biofilms to methane (CH4) and carbon dioxide (CO2) emissions in the ...
Fanny Colas +12 more
wiley +1 more source