Results 61 to 70 of about 41,508,012 (197)

On the asymptotic expansion of the solutions of the separated nonlinear Schroedinger equation

, 2000
Nonlinear Schr\"odinger equation (with the Schwarzian initial data) is important in nonlinear optics, Bose condensation and in the theory of strongly correlated electrons.
A.A. Kapaev, Ablowitz, Calogero, Deift, Dodd, Faddeev, Gardner, Göhmann, Göhmann, Göhmann, Its, Its, Kim, Lax, Manakov, Segur, Segur, V.E. Korepin, Zakharov, Zakharov, Zakharov, Zakharov   +21 more
core   +4 more sources

Integrative taxonomy of the Ceratozamia mexicana Brongn. (Zamiaceae) species complex from a phylogeographic perspective

Plant Species Biology, Volume 40, Issue 6, Page 530-546, November 2025.
Recent research has ignited a renewed interest in Ceratozamia cycads, unveiling their remarkable diversity. While previous studies primarily focused on morphology, this investigation employs a multidisciplinary approach, integrating phylogenetics, morphology, and ecological niches. Our methods identify seven distinct lineages as separate species.
Anwar Medina‐Villarreal, Jorge González‐Astorga, Alejandro Espinosa de los Monteros   +2 more
wiley   +1 more source

Occurrence and description of Clinostomum complanatum (Rudolphi, 1819) metacercariae in freshwater fishes from Gheshlagh basin, West of Iran [PDF]

Iranian Journal of Animal Biosystematics, 2018
Clinostomum spp. have a long uncertain taxonomic history which also have attracted great attentions. This could be due to their zoonotic potential and the presence of yellow grubs in the fish as a second intermediate host.
Loghman Maleki, Hamidreza Heidari, Edris Ghaderi, Jalal Rostamzadeh   +3 more
doaj   +1 more source

On the equivalence of the discrete nonlinear Schr\"odinger equation and the discrete isotropic Heisenberg magnet

, 1999
The equivalence of the discrete isotropic Heisenberg magnet (IHM) model and the discrete nonlinear Schr\"odinger equation (NLSE) given by Ablowitz and Ladik is shown.
Ablowitz, Ablowitz, Date, Date, Ishimori, Its, Izergin, Quispel, Suris, Tim Hoffmann   +9 more
core   +1 more source

Kalymmatonema gen. nov. (Scytonemataceae, Cyanobacteria): A desert soil crust genus previously identified as Scytonema hyalinum, with description of seven species new to science

Journal of Phycology, Volume 61, Issue 5, Page 1225-1250, October 2025.
Abstract Numerous cyanobacterial strains previously identified as Scytonema hyalinum were determined to be phylogenetically distant from the type species of Scytonema, S. hofmannii. Morphological and molecular evidence suggests this distinct clade necessitates placement in a new genus, and we have described Kalymmatonema gen. nov. herein. Kalymmatonema
Markéta Bohunická, Jeffrey R. Johansen, Nicole Pietrasiak, Brian M. Jusko, Melaku Mesfin, Itzel Becerra‐Absalón   +5 more
wiley   +1 more source

Identification of Colletotrichum spaethianum causing sugar beet leaf spot in North Dakota, USA [PDF]

Journal of Plant Protection Research
Sugar beet leaves with dark brown to blackish, necrotic lesions were found in a grower’s field in Casselton, North Dakota, USA in August 2021. Morphological features of the isolates obtained in growth media from the diseased samples were observed and ...
M.Z.R. Bhuiyan Ziaur, Dilip Kumar Lakshman, Adnan Ismaiel, Prashanta Bhui, Mohamed Khan   +4 more
doaj   +1 more source

The phylogenetic placement of a new species of Amomum (Zingiberaceae) from the Philippines

Nordic Journal of Botany, Volume 2025, Issue 9, September 2025.
During recent fieldwork in Pasonanca Natural Park, Zamboanga City, Philippines, we collected a ginger species belonging to Amomum sensu stricto that resembled the Bornean endemic Amomum stenosiphon. In phylogenetic analyses based on ITS trnK/matK sequences, the Philippine collections formed a monophyletic group but did not group with A.
Rudolph Valentino A. Docot, Lyle Christian P. Santiago, Kean Roe F. Mazo, Mark Gregory Q. Rule, Thomas Haevermans, Axel Dalberg Poulsen   +5 more
wiley   +1 more source

A Long‐Term Ecological Research Data Set From the Marine Genetic Monitoring Program ARMS‐MBON 2018–2020

Molecular Ecology Resources, Volume 25, Issue 4, May 2025.
ABSTRACT Molecular methods such as DNA/eDNA metabarcoding have emerged as useful tools to document the biodiversity of complex communities over large spatio‐temporal scales. We established an international Marine Biodiversity Observation Network (ARMS‐MBON) combining standardised sampling using autonomous reef monitoring structures (ARMS) with ...
Nauras Daraghmeh, Katrina Exter, Justine Pagnier, Piotr Balazy, Ibon Cancio, Giorgos Chatzigeorgiou, Eva Chatzinikolaou, Maciej Chelchowski, Nathan Alexis Mitchell Chrismas, Thierry Comtet, Thanos Dailianis, Klaas Deneudt, Oihane Diaz de Cerio, Markos Digenis, Vasilis Gerovasileiou, José González, Laura Kauppi, Jon Bent Kristoffersen, Piotr Kukliński, Rafał Lasota, Liraz Levy, Magdalena Małachowicz, Borut Mavrič, Jonas Mortelmans, Estefania Paredes, Anita Poćwierz‐Kotus, Henning Reiss, Ioulia Santi, Georgia Sarafidou, Grigorios Skouradakis, Jostein Solbakken, Peter A. U. Staehr, Javier Tajadura, Jakob Thyrring, Jesus S. Troncoso, Emmanouela Vernadou, Frederique Viard, Haris Zafeiropoulos, Małgorzata Zbawicka, Christina Pavloudi, Matthias Obst   +40 more
wiley   +1 more source

Quasi-linear Stokes phenomenon for the second Painlev\'e transcendent

, 2001
Using the Riemann-Hilbert approach, we study the quasi-linear Stokes phenomenon for the second Painlev\'e equation $y_{xx}=2y^3+xy-\alpha$. The precise description of the exponentially small jump in the dominant solution approaching $\alpha/x$ as $|x|\to\
A A Kapaev, A R Its, Andreev F V, Basor E L, Bateman H, Beals R, Boutroux P, Boutroux P, Costin O, Deift P, Deift P, Deift P A, Deift P A, Flaschka H, Fokas A S, Fokas A S, Ince E L, Its A R, Its A R, Its A R, Its A R, Its A R, Its A R, Its A R, Kapaev A A, Kapaev A A, Kapaev A A, Kapaev A A, Kapaev A A, Kitaev A V, Litvinchuk G, Novokshenov V Yu, Novokshenov V Yu, Takei Y, Takei Y, Winternitz, Zhou X   +36 more
core   +1 more source

Phylogenetics and reticulation among koelerioid clades, part I: Contraction of Trisetum, expansion of Acrospelion, Graphephorum, and Tzveleviochloa; Graciliotrisetum gen. nov. and resurrection of Aegialina (Poaceae, Pooideae, Poeae, Aveninae)

Journal of Systematics and Evolution, Volume 63, Issue 3, Page 629-655, May 2025.
Phylogenetic analysis of Koeleriinae clades A and B yielded mostly congruent topologies in nuclear and plastid trees. However, several lineages resolved in strikingly incongruent positions in trees from different data sets, suggesting a reticulate origin for these taxa.
Patricia Barberá, Robert J. Soreng, Paul M. Peterson, Joan Garcia‐Porta, Konstantin Romaschenko, Carlos Aedo, Alejandro Quintanar   +6 more
wiley   +1 more source