Results 21 to 30 of about 81,222 (227)

Ptaquiloside in Irish Bracken Ferns and Receiving Waters, with Implications for Land Managers

open access: yesMolecules, 2016
Ptaquiloside, along with other natural phytotoxins, is receiving increased attention from scientists and land use managers. There is an urgent need to increase empirical evidence to understand the scale of phytotoxin mobilisation and potential to enter ...
Connie O’Driscoll   +9 more
doaj   +1 more source

A new approach to quantum backflow [PDF]

open access: yes, 2005
We derive some rigorous results concerning the backflow operator introduced by Bracken and Melloy. We show that it is linear bounded, self adjoint, and not compact.
Bogolubov N N   +11 more
core   +1 more source

Bracken Fern Control in Pastures

open access: yesEDIS, 2021
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
doaj   +3 more sources

A review of current bracken control and associated vegetation strategies in Great Britain [PDF]

open access: yesWeb Ecology, 2002
Bracken is a major problem for livestock-based, extensive agriculture in many parts of the world. It also causes problems for conservation, recreation, game management and forestry and is hence subject to management in order to control it.
R. J. Pakeman, M. G. Le Duc, R. Marrs
doaj   +1 more source

Control of bracken by promoting regeneration of woody vegetation in the Yucatan Peninsula

open access: yesTrees, Forests and People, 2023
In the tropical dry forest of the Yucatan Peninsula in southern Mexico, as in many parts of the Neotropics, deforested areas have been colonized by the highly competitive invasive bracken (Pteridium arachnoideum), which inhabits naturally regenerated and
Samuel Israel Levy-Tacher   +1 more
doaj   +1 more source

Quantum Damped Harmonic Oscillator [PDF]

open access: yes, 2012
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
core   +2 more sources

HPV-18 transformed cells fail to arrest in G1 in response to quercetin treatment [PDF]

open access: yes, 2005
Previous work with primary human keratinocytes demonstrated that quercetin, a potent mutagen found in high levels in bracken fern (Pteridium aquilinum), arrested cells in G1 with concomitant elevation of the cyclin-dependent kinase inhibitor (cdki ...
Alonso-Amelot   +37 more
core   +1 more source

First Report of a Bracken Blight Disease Caused by Didymella sp.

open access: yesResearch in Plant Disease, 2019
An outbreak of new disease with leaf and stem blight symptom occurred at bracken-growing fields in Namhae-gun, Gyeongsangnam-do, Korea during the last 4 years. This new disease caused significant yield losses on bracken production in this area.
Jung Eun Lee   +6 more
doaj   +1 more source

Considerations for conducting systematic reviews: evaluating the performance of different methods for de-duplicating references

open access: yesSystematic Reviews, 2021
Background Systematic reviews involve searching multiple bibliographic databases to identify eligible studies. As this type of evidence synthesis is increasingly pursued, the use of various electronic platforms can help researchers improve the efficiency
Sandra McKeown, Zuhaib M. Mir
doaj   +1 more source

Invasion impact by Pteridium arachnoideum (Kaulf.) Maxon (Dennstaedtiaceae) on a neotropical savanna

open access: yesActa Botânica Brasílica, 2015
Whether management intervention is required to control biological invasions depends primarily on demonstrating species losses resulting from such invasions. Brackens of the Pteridium genus are currently regarded as a problem species that act as important
Natalia Guerin, Giselda Durigan
doaj   +1 more source

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