Results 21 to 30 of about 16,136 (202)
Qian ceng Ta, the whole plant of Huperzia serrata, is an important landscape and medicinal herbs and contains abundant bioactive lycopodium alkaloids. Although the structures of more than 100 lycopodium alkaloids in Huperzia serrata have been isolated ...
Shiwen Wu, Zhen Fan, Youli Xiao
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New Lycopodium alkaloids from Lycopodium obscurum [PDF]
Three new Lycopodium alkaloids, obscurumines C-E (1–3), along with nine known compounds, were isolated from the club moss Lycopodium obscurum L. Structures of the new compounds were determined on the basis of their spectroscopic analysis and the relative configurations of 1 were established by X-ray crystallographic analysis.
Zhang, Xue-Yuan +7 more
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Due to the safe operation and stability of non-premixed combustion, it can widely be utilized in different engineering power and medical systems. The current paper suggests a mathematical asymptotic technique to describe non-premixed laminar flow flames ...
Mehdi Bidabadi +4 more
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Sporopollenin, the least known yet toughest natural biopolymer [PDF]
© 2015 Mackenzie, Boa, Diego-Taboada, Atkin and Sathyapalan. Sporopollenin is highly cross-linked polymer composed of carbon, hydrogen, and oxygen that is extraordinarily stable and has been found chemically intact in sedimentary rocks some 500 million ...
Atkin, Stephen L. +5 more
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Shared body plans of lycophytes inferred from root formation of Lycopodium clavatum
Late Silurian to early Devonian lycophytes had prostrate aerial axes, while subordinate organs or subterranean axes were formed around the dichotomies of the axes. The subterranean axes are hypothesized to have evolved into root-bearing axes (rhizophores)
Yuki Ito +3 more
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Phyllotaxis diversity in Lycopodium clavatum L. and Lycopodium annotinum L.
In shoots of Lycopodium microphyllous phyllotaxis is extremely diverse. 24 various patterns were found in anisotomous L. clavatum and "only" 11 in isotomous L. annotinum. Spiral patterns expressed by k:(k+1 ) parastichy numbers were present together with
Edyta Gola
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Notas sobre la flora del centro de Chiapas
En una excnrsión que durante un mes efectuamos el señor E. J. Alexander, del Jardín Botánico de Nueva York, y yo, contamos 120 géneros de plantas vasculares que sen comunes en esas regiones tan separadas (la región elevada del centro de Chiapas y la ...
Aaron J. Sharp
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Minimum Ignition Temperature of Hybrid Mixtures
Although the minimum ignition temperature is an important safety characteristic and hybrid mixtures are of high relevance in different industrial processes, the focus of research is directed towards single-substance systems.
Dieter Gabel +3 more
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The importance of the oil-shale Bings of West Lothian, Scotland, to local and national biodiversity [PDF]
The oil-shale bings of West Lothian, Scotland, are a group of post-industrial waste sites, unique in Britain and Western Europe. The industrial exploitation of oil-bearing rocks has created a habitat with its own distinctive flora and fauna.
Harvie, Barbra
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Magnetic and Dyed Microcapsules From the Spores of Clubmoss
In this article we describe the preparation of bioavailable microcapsules derived from spores of clubmoss (Lycopodium clavatum) that are composed of protein-free, non-allergenic, and porous sporopollenin, often described as nature’s most robust polymeric
Wen Cai +3 more
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