Results 61 to 70 of about 181,941 (293)

Conservation challenges and opportunities for native apple (Malus) species in Canada

PLANTS, PEOPLE, PLANET, EarlyView.
Apple, one of the world's most widely cultivated and economically important fruit crops, has two wild relatives native to Canada. In this review, we describe the importance of these native apple species to Indigenous heritage and the current threats the species faces due to pests, diseases, and habitat loss.
Terrell T. Roulston, Chelsey Geralda Armstrong, Mckenna Batstone, Kyle Bobiwash, Sylvia Grace Borda, Dionne Bunsha, Claudia Ciotir, Brian C. Husband, Paul Manning, Tara L. Moreau, Amritpal S. Singh, Tyler W. Smith, Jens Ulrich, Zoë Migicovsky   +13 more
wiley   +1 more source

Study of the production mechanism of the eta meson by means of analysing power measurements

, 2006
Information about the production mechanism of the eta meson in proton-proton collisions can be inferred by confronting the experimental studies on the analysing power for the p(pol)p --> pp eta reaction with the theoretical predictions of this observable.
A. Budzanowski, A. Khoukaz, A. Täschner, B. Kamys, B. Lorentz, C. Piskor-Ignatowicz, Czyżykiewicz R., Czyżykiewicz R., D. Gil, D. Grzonka, E. Czerwiński, Fäldt G., H. Rohdjess, H.-H. Adam, J. Majewski, J. Przerwa, J. Ritman, J. Smyrski, K. Ulbrich, L. Jarczyk, M. Janusz, M. Siemaszko, M. Wolke, P. Klaja, P. Moskal, P. Winter, P. Wüstner, R. Czyżykiewicz, T. Rożek, T. Sefzick, W. Oelert, W. Zipper   +31 more
core   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop, Jiwei Li, Daryl L. Moorhead, Sasha C. Reed, Katherine E. O. Todd‐Brown, Alexi C. Besser, Dellena Evelyn Bloom, Thomas C. Ingalls, Alejandro Cueva   +8 more
wiley   +1 more source

Meson-Meson Scattering in Lattice QED_2+1

, 1992
Scattering phase shifts of a meson-meson system in staggered 3-dimensional lattice QED are computed. The main task of the simulation is to obtain a discrete set of two-body energy levels.
Burden, H.R. Fiebig, Lüscher, Lüscher, R.M. Woloshyn   +4 more
core   +1 more source

Drought sensitivity is climate‐adapted and consistently influenced by wood density and maximum height in eucalypts

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Rising drought frequency and intensity are placing many tree species at increasing risk of mortality. Identifying which trees are most sensitive to drought is critical for biodiversity conservation and forest carbon storage; however, this is challenging in natural and ...
Laura Victoria Perez‐Martinez, Belinda E. Medlyn, Dean Nicolle, Anne‐Cécile Colin, Brendan Choat, David T. Tissue, Paul D. Rymer   +6 more
wiley   +1 more source

Production of Eta Mesons in Proton-Proton Collisions Close to Threshold

, 2004
A brief experimental overview on the close-to-threshold eta meson production in proton-proton interactions is presented and the available observables in measurements with unpolarized and polarized beam and target are discussed.Comment: 4 pages; Presented
A. BUDZANOWSKI, A. KHOUKAZ, A. TÄSCHNER, Abdel-Bary M., B. KAMYS, C. PISKOR-IGNATOWICZ, Calén H., Caso C., D. GRZONKA, H.-H. ADAM, J. PRZERWA, J. SMYRSKI, K. KILIAN, L. JARCZYK, M. JANUSZ, M. SIEMASZKO, M. WOLKE, P. KLAJA, P. KOWINA, P. MOSKAL, P. WINTER, P. WÜSTNER, R. CZYŻYKIEWICZ, R. SANTO, Roderburg E., T. ROŻEK, T. SEFZICK, W. OELERT, W. ZIPPER, Winter P.   +29 more
core   +1 more source

Intrinsic operators for the electromagnetic nuclear current [PDF]

, 1996
The intrinsic electromagnetic nuclear meson exchange charge and current operators arising from a separation of the center-of-mass motion are derived for a one-boson-exchange model for the nuclear interaction with scalar, pseudoscalar and vector meson ...
Adam, Adam, Adam, Adam, Arenhövel, Beck, Coon, Friar, Friar, Friar, Friar, Friar, Friar, Gross, Göller, H. Arenhövel, Hummel, Hummel, J. Adam, Krajcik, Riska, Tamura, Tjon, Truhlík   +23 more
core   +3 more sources

On Meson Masses

Few-Body Systems, 2007
It is shown that in the framework of analytical confinement, when quark and gluon propagators are induced by an vacuum selfdual gluon field with constant strength, the masses of meson with quantum numbers $Q=J^P$ and quark constituents $m_1,~m_2$ are described with reasonable accuracy by the formula $$ M_Q(m_1,m_2)=(m_1+m_2)[1+{A_Q\over (m_1^2+1 ...
openaire   +3 more sources

International Biological Flora: Tsuga canadensis*

Journal of Ecology, EarlyView.
Eastern Hemlock is a long‐lived forest tree of eastern North America known for its deep shade and home given to many organisms. Despite surviving large‐scale clearing for agriculture when Europeans arrived, it returned to dominate when the land was abandoned in the mid 1800s.
Peter A. Thomas, David A. Orwig
wiley   +1 more source

Decay constants and form factors of s-wave and p-wave mesons in the covariant light-front quark model

, 2011
We reanalyze the decay constants of s-wave and p-wave mesons and D, B ->M form factors, where M represents a pseudoscalar meson, a vector meson, a scalar meson, or an axial vector meson within a covariant light-front quark model.
Abada A, Abe K Belle Collaboration, Amsler C, Asner D Heavy Flavor Averaging Group, Aubert B, Ball P, Bernard C, Bjorken J D, Bjorken J D, Close F E, Feldmann T, Flynn J M, Hwang C W, Nakamura K, R C Verma, Rosner J L Stone S, Suzuki M   +16 more
core   +1 more source