Results 71 to 80 of about 16,136 (202)
Synthetic approaches towards the Lycopodium alkaloids [PDF]
, 2014 Podeu consultar el llibre complet a: http://hdl.handle.net/2445/63704The Lycopodium alkaloids are a structurally diverse group of natural products isolated from Lycopodium with important biological effects for the potential treatment of cancer and severe
Balañà, Marta +4 more
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Journal of Vegetation Science, Volume 36, Issue 5, September/October 2025.ABSTRACT Questions The relative importance of abiotic versus biotic factors on structuring plant communities is debated, especially in the Arctic tundra where the harsh environment is limiting together with the effects of grazing by reindeer. To understand the relative and interactive effect of abiotic (bottom‐up) and biotic (top‐down) factors on ...
Emma L. Gemal +2 more
wiley +1 more source
Molecules, 2014 A series of Lycopodium alkaloids, namely lycosquarosine A (1), acetylaposerratinine (2), huperzine A (3), huperzine B (4), 8α-hydrophlemariurine B (5), and huperzinine (6), has been isolated from Vietnamese Huperzia squarrosa.
Nguyen Ngoc Chuong +3 more
doaj +1 more source
Nonconventional Techniques in Plant Alkaloid Extraction: A Decade of Progress (2014–2023)
Chemistry &Biodiversity, Volume 22, Issue 8, August 2025.This figure seeks to represent the evolution of the different unconventional approaches that were adopted for the extraction of plant‐derived alkaloids during the decade from 2014 to 2023. ABSTRACT Plant metabolism encompasses primary and secondary pathways, with secondary metabolism yielding diverse natural products crucial for plant adaptation and ...
Victor Menezes Sipoloni +5 more
wiley +1 more source
A Middle and Late Devensian sequence from the northern part of Kents Cavern (Devon, UK)
Journal of Quaternary Science, Volume 40, Issue 6, Page 925-943, August 2025.Abstract 1920s/30s excavation of a Middle Devensian sequence in the northern part of Kents Cavern recovered important Late Middle and Early Upper Palaeolithic archaeological material, including Britain's oldest known Homo sapiens remains. Questions remain about this material, including how it came to be in the cave.
Rob Dinnis +11 more
wiley +1 more source
PTERIDÓFITOS DE COLOMBIA I. COMPOSICIÓN Y DISTRIBUCIÓN DE LAS LYCOPODIACEAE
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y NaturalesLa familia Lycopodiaceae en Colombia está representada por tres géneros y 55 especies. Huperzia es el más diverso con 42 especies. mientras que Lycopodiella y Lycopodium poseen 9 y 4 respectivamente.
María Teresa Murillo-Pulido +1 more
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RodriguésiaA conspectus of the Lycopodiaceae in Brazil is presented, following a generic classification based on anatomy, chromosome numbers, spores and gametophytes, as well as recent molecular studies.
Benjamin Øllgaard, Paulo G. Windisch
doaj +1 more source
Microgravity acoustic mixing for particle cloud combustors [PDF]
Experimental and theoretical investigations of acoustic mixing procedures designed to uniformly distribute fuel particles in a combustion tube for application in the proposed Particle Cloud Combustion Experiment (PCCE) are described.
Pla, Frederic, Rubinstein, Robert I.
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The wake dynamics and flight forces of the fruit fly Drosophila melanogaster [PDF]
, 1996 We have used flow visualizations and instantaneous force measurements of tethered fruit flies (Drosophila melanogaster) to study the dynamics of force generation during flight.
Dickinson, Michael H., Götz, Karl G.
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An improved methodology for the recovery of Zea mays and other large crop pollen, with implications for environmental archaeology in the Neotropics [PDF]
, 2012 We present a simple sieving methodology to aid the recovery of large cultigen pollen grains, such as maize (Zea mays L.), manioc (Manihot esculenta Crantz), and sweet potato (Ipomoea batatas L.), among others, for the detection of food production using ...
Bennett KD +21 more
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