Results 91 to 100 of about 40,747,413 (194)

Characterization of mycorrhizal fungi of the genus Tulasnella (Tulasnellaceae, Basidiomycota) in the genus of orchids Bletia from Barranca del Cupatitzio Natural Reserve, Mexico

open access: yesAnales del Jardín Botánico de Madrid, 2018
The goal of this study was the identification of mycorrhizal fungi associated with three terrestrial orchids of the genus Bletia Ruiz & Pav.: B. roezlii Rchb. f., B. purpurata A.Rich., and B.
María de los Ángeles Beltrán-Nambo   +5 more
doaj   +1 more source

Laos. Its People, Its Society, Its Culture

open access: yesJournal of the American Oriental Society, 1960
Mode of access: Internet.
Human Relations Area Files, inc.   +2 more
openaire   +2 more sources

Numerical study of a multiscale expansion of the Korteweg de Vries equation and Painlev\'e-II equation

open access: yes, 2007
The Cauchy problem for the Korteweg de Vries (KdV) equation with small dispersion of order $\e^2$, $\e\ll 1$, is characterized by the appearance of a zone of rapid modulated oscillations.
Deift P   +4 more
core   +5 more sources

Pseudognaphalium aldunateoides de nuevo bajo Gnaphalium (Compositae: Gnaphalieae)

open access: yesCollectanea Botanica, 2018
La clasificación genérica de varios miembros de la tribu Gnaphalieae (Compositae) y en particular la delimitación genérica del antiguo género Gnaphalium ha sido problemática durante mucho tiempo. El género Pseudognaphalium fue escindido de Gnaphalium por
A. Acosta-Maindo, M. Galbany-Casals
doaj   +1 more source

Ganoderma butt rot of hazelnut (Corylus avellana) caused by Ganoderma adspersum in Türkiye

open access: yesForest Pathology, Volume 54, Issue 3, June 2024.
Abstract In September 2022, hazelnut trees in six orchards in the Çarşamba district of Samsun province, a major hazelnut production area in the Black Sea region of Türkiye, showed symptoms of leaf yellowing, shoot dieback, decline, basal stem rot and the presence of brown bracket‐like sessile basidiocarps.
Muharrem Türkkan   +3 more
wiley   +1 more source

Associated Lam\'{E} Equation, Periodic Potentials and sl(2,R)

open access: yes, 2002
We propose a new approach based on the algebraization of the Associated Lam\'{e} equation \[-\psi''(x) + [ m(m+1)k^{2}sn^{2}x + \ell(\ell+1)k^{2}(cn^{2}x/dn^{2}x)]\psi(x) = E\psi(x)\] within sl(2,R) to derive the corresponding periodic potentials.
Andrianov A. A.   +4 more
core   +1 more source

Hankel determinant and orthogonal polynomials for the Gaussian weight with a jump

open access: yes, 2007
We obtain asymptotics in n for the n-dimensional Hankel determinant whose symbol is the Gaussian multiplied by a step-like function. We use Riemann-Hilbert analysis of the related system of orthogonal polynomials to obtain our results.Comment: 34 pages ...
Its, A., Krasovsky, I.
core   +1 more source

Connection Formulae for Asymptotics of Solutions of the Degenerate Third Painlev\'{e} Equation. I

open access: yes, 2003
The degenerate third Painlev\'{e} equation, $u^{\prime \prime} = \frac{(u^{\prime})^{2}}{u} - \frac{u^{\prime}}{\tau} + \frac{1}{\tau}(-8 \epsilon u^{2} + 2ab) + \frac{b^{2}}{u}$, where $\epsilon,b \in \mathbb{R}$, and $a \in \mathbb{C}$, and the ...
A H Vartanian   +24 more
core   +1 more source

Marasmioid and Gymnopoid Fungi of the Republic of Korea. 8. Gymnopus Section Levipedes

open access: yesMycobiology, 2020
Collections of Gymnopus sect. Levipedes from the Republic of Korea have been studied. Two new species, Gymnopus dryophiloides and G. brunneodiscus, are described based on their macro- and micromorphological and phylogenetic characteristics.
Rhim Ryoo   +2 more
doaj   +1 more source

Listeriosis: Recognizing it, treating it, preventing it

open access: yesCleveland Clinic Journal of Medicine, 1999
Listeria monocytogenes has become a major pathogen in foodborne illness. It most often affects patients who are pregnant, at the extremes of life, or immunocompromised in some way. A variety of clinical manifestations are possible, but bacteremia and meningitis are most common.
openaire   +2 more sources

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