Results 41 to 50 of about 582,098 (170)

Development of CCMb: A Low‐Mg Calcite Reference Material for In Situ Measurement of δ18O, δ13C and Selected Trace Elements

Geostandards and Geoanalytical Research, Volume 50, Issue 3, Page 677-700, September 2026.
Key Points Low‐Mg calcite RM developed for in situ microanalysis applications in palaeoclimatology (δ18O, δ13C; Mg, Sr m/m). New data for calcite CRM IAEA‐603 (δ18O, δ13C by SIMS and GS‐IRMS; Mg m/m). No detectable IMF effect of Mg on SIMS δ18O determinations for mass fractions < 3650 μg g‐1.
Andreas T. Hertwig, Maciej G. Śliwiński, Irene Cantarero, Richard A. Stern, Carles Fàbrega, Jakub T. Śliwiński, Thomas Ludwig, František Majs, William Nachlas, John H. Fournelle, Xavier Llovet, Rachelle B. Turnier, David Parcerisa, Anna Travé   +13 more
wiley   +1 more source

New version of Bäcklund transformations in Euclidean 3-space

, 2019
In this paper, we study the Bäcklund transformations for the adjoint curve in the Euclidean 3-space. Firstly, it is obtained some essential equations of the Bäcklund transformation.
Körpınar, Talat, Muhammed Talat Sariaydin, Sariaydin M.T., Talat Körpinar   +3 more
core   +1 more source

Darboux–Bäcklund transformations, dressing & impurities in multi-component NLS

Nuclear Physics B, 2017
We consider the discrete and continuous vector non-linear Schrödinger (NLS) model. We focus on the case where space-like local discontinuities are present, and we are primarily interested in the time evolution on the defect point. This in turn yields the
Panagiota Adamopoulou, Anastasia Doikou, Georgios Papamikos   +2 more
doaj   +1 more source

Large‐scale nuclear and plastid phylogenomic analyses inform an updated Angiosperm Phylogeny Group classification: APG V

Journal of Systematics and Evolution, Volume 64, Issue 5, Page 845-874, September 2026.
This revision of the APG classification considers the extensive recent analyses of hundreds of nuclear and plastid genes for many angiosperm species. Although previous versions of the APG classification were largely based on uniparentally inherited markers (plastid DNA, largely maternally inherited), there has emerged since APG IV extensive evidence of
The Angiosperm Phylogeny Group, Recommended citation: APG V (2026). This paper was compiled by James W. Byng, Mark W. Chase, Maarten J. M. Christenhusz, Michael F. Fay, De‐Zhu Li, Hong Ma, David J. Mabberley, Douglas E. Soltis, Pamela S. Soltis, and Peter F. Stevens, who are equally responsible and listed here in alphabetical order, with contributions, also in alphabetical order, from William J. Baker, Steven Dodsworth, Félix Forest, Olivier Maurin, Lisa Pokorny, Stephen A. Smith, Alexandre R. Zuntini   +20 more
wiley   +1 more source

On Bäcklund Transformations for Nonlinear Partial Differential Equations

, 1995
In this paper, Bäcklund transformations for nonlinear partial differential equations are obtained without using any structure associated with the equations. We classify all the nonlinear partial differential equations of the form uxxx = F(u, ux, ut) that
Wu, H.Y.
core   +1 more source

Invariants, Lie-Bäcklund Operators and Bäcklund Transformations [PDF]

, 1979
This thesis is mainly concerned with the application of groups of transformations to differential equations and in particular with the connection between the group structure of a given equation and the existence of exact solutions and conservation ...
Fokas, Athanassios S.
core   +1 more source

The Lattice Structure of Connection Preserving Deformations for q-Painlevé Equations I

Symmetry, Integrability and Geometry: Methods and Applications, 2011
We wish to explore a link between the Lax integrability of the q-Painlevé equations and the symmetries of the q-Painlevé equations. We shall demonstrate that the connection preserving deformations that give rise to the q-Painlevé equations may be thought
Christopher M. Ormerod
doaj   +1 more source

Responsive nitric oxide‐releasing antibacterial materials for biofilm‐associated infections: Mechanisms, design strategies, and applications

Responsive Materials, Volume 4, Issue 3, August 2026.
This review summarizes the recent progress in responsive NO‐releasing materials and their applications in biofilm‐associated infectious diseases. The design principles and response mechanisms are given to provide inspiration toward the future development of multi‐responsive NO‐releasing materials.
Wenyue Sun, Meiqi Li, Di Nan, Jiaqi Zhao, Yu Chen, Yao Gao, Shichen Zhang, Kirsten L. Van Landuyt, Manlin Qi   +8 more
wiley   +1 more source

Bäcklund transformations, energy shift and the plane wave limit [PDF]

, 2007
We discuss basic properties of the Bäcklund transformations for the classical string in AdS space in the context of the null-surface perturbation theory.
Mikhailov, Andrei
core  

Molecular phylogenetics of Thymelaeaceae‐Thymelaeoideae: Resolving the paraphyly of Gnidia and a new monophyletic generic classification for the group

TAXON, Volume 75, Issue 4, August 2026.
Abstract Earlier phylogenetic analyses of the family Thymelaeaceae using combined plastid (matK, rbcL, rps16, trnL‐F) and nuclear (ITS) regions showed that the African‐Malagasy genus Gnidia was extensively polyphyletic in relation to the southern African genera Lachnaea, Passerina and Struthiola, as well as to other Southern Hemisphere genera such as ...
Oluwayemisi D. Olaniyan, James S. Boatwright, Anthony R. Magee, John C. Manning, Michelle van der Bank   +4 more
wiley   +1 more source