Results 31 to 40 of about 81,175 (239)
Quantum Damped Harmonic Oscillator [PDF]
In this chapter we treat the quantum damped harmonic oscillator, and study mathematical structure of the model, and construct general solution with any initial condition, and give a quantum counterpart in the case of taking coherent state as an initial ...
Fujii, Kazuyuki
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Pteridium is a cosmopolitan genus that acts as an invasive species in many parts of the world. Most research on this genus has occurred in Europe, and there is a lack of data on it from South America, in spite of causing considerable conservation ...
DM Silva Matos +3 more
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Casimir invariants and characteristic identities for $gl(\infty )$ [PDF]
A full set of (higher order) Casimir invariants for the Lie algebra $gl(\infty )$ is constructed and shown to be well defined in the category $O_{FS}$ generated by the highest weight (unitarizable) irreducible representations with only a finite number of
M. D. Gould, N. I. Stoilova, Sato M.
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The role of Pteridium arachnoideum(Kaulf) on the seed bank of the endangered Brazilian Cerrado
The native bracken (Pteridium arachnoideum) often occurs in mono-specific stands in the Brazilian Cerrado, and this dominance can impact on both the above-ground vegetation and soil seed bank.
R. O. Xavier +3 more
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Fate of ptaquiloside-A bracken fern toxin-In cattle.
Ptaquiloside is a natural toxin present in bracken ferns (Pteridium sp.). Cattle ingesting bracken may develop bladder tumours and excrete genotoxins in meat and milk.
Paulo César Dos Reis Aranha +5 more
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Bracken Fern Control in Pastures
This publication discusses chemical control of bracken fern in pastures. Written by B. Sellers, J. Ferrell, and T. Wilson, and published by the UF/IFAS Agronomy Department, revised August 2021.
Brent A. Sellers +2 more
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The carcinogenicity of bracken fern harvest from two regions of Paraná State to induce hematury in rats was studied. In order to do that, 33 Wistar rats were divided in three groups.
G.D. Cruz +3 more
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Ultrafast and accurate 16S rRNA microbial community analysis using Kraken 2
Background For decades, 16S ribosomal RNA sequencing has been the primary means for identifying the bacterial species present in a sample with unknown composition.
Jennifer Lu, Steven L. Salzberg
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Cryopreservation is an important technique used in the conservation of various plant tissues. This study proposes a cryopreservation method for the long-term conservation of eastern bracken fern gametophytes (Pteridium aquilinum var.
Bo-Kook Jang +4 more
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Potential and historical Uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agriculture [PDF]
This report was presented at the UK Organic Research 2002 Conference. Bracken is considered a serious weed species, due to its toxic constituents and negative impacts on agriculture and conservation.
Donnelly, Eric +2 more
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