259 research outputs found
Potential association of HCF164, a chloroplast nuclear-encoded thioredoxin-like protein, with Coffea SH9 resistance factor against Hemileia vastatrix
29th Conference of Association for the Science and Information on Coffee, 11 Sept. - 14 Sept. 2023 Hanoi, Vietnaminfo:eu-repo/semantics/publishedVersio
Bottom-up control of common octopus Octopus vulgaris in the Galician upwelling system, northeast Atlantic Ocean
This paper investigates the possible underlying causes of the wide interannual fluctuations
in catch of the common octopus Octopus vulgaris Cuvier, 1797 in one of the main small-scale
fisheries off the coast of Galicia (northwest Spain). Galicia is at the northern boundary of the
Iberian–Canary current upwelling system in the northeast Atlantic Ocean, where local winds induce
seasonal upwelling, largely driving the annual cycles of primary and secondary production. We
hypothesize that such dynamics are also fundamental for the survival of the planktonic stages of
octopus and set the year class strength. We address this hypothesis by investigating the influence of
upwelling on time-series of octopus fishery data. Wind stress structure during the spring–summer
(prior to the hatching peak) and autumn–winter (during the planktonic stage) was found to affect the
early life phase of this species, and explains up to 85% of the total variance of the year-to-year
variability of the adult catch. Despite this bottom-up modulation via environmental conditions, our
results also provide evidence for a between-cohort density-dependent interaction, probably caused
by cannibalism and competition for habitat.Postprin
Integrative transcriptomic and metabolomic approaches to unravel the resistance profile of Kawisari coffee against Hemileia vastatrix
29th Conference of Association for the Science and Information on Coffee, 11 Sept. - 14 Sept. 2023 Hanoi, Vietnaminfo:eu-repo/semantics/publishedVersio
Extended M1 sum rule for excited symmetric and mixed-symmetry states in nuclei
A generalized M1 sum rule for orbital magnetic dipole strength from excited
symmetric states to mixed-symmetry states is considered within the
proton-neutron interacting boson model of even-even nuclei. Analytic
expressions for the dominant terms in the B(M1) transition rates from the first
and second states are derived in the U(5) and SO(6) dynamic symmetry
limits of the model, and the applicability of a sum rule approach is examined
at and in-between these limits. Lastly, the sum rule is applied to the new data
on mixed-symmetry states of 94Mo and a quadrupole d-boson ratio
is obtained in a largely
parameter-independent wayComment: 19 pages, 3 figures, Revte
The nuclear energy density functional formalism
The present document focuses on the theoretical foundations of the nuclear
energy density functional (EDF) method. As such, it does not aim at reviewing
the status of the field, at covering all possible ramifications of the approach
or at presenting recent achievements and applications. The objective is to
provide a modern account of the nuclear EDF formalism that is at variance with
traditional presentations that rely, at one point or another, on a {\it
Hamiltonian-based} picture. The latter is not general enough to encompass what
the nuclear EDF method represents as of today. Specifically, the traditional
Hamiltonian-based picture does not allow one to grasp the difficulties
associated with the fact that currently available parametrizations of the
energy kernel at play in the method do not derive from a genuine
Hamilton operator, would the latter be effective. The method is formulated from
the outset through the most general multi-reference, i.e. beyond mean-field,
implementation such that the single-reference, i.e. "mean-field", derives as a
particular case. As such, a key point of the presentation provided here is to
demonstrate that the multi-reference EDF method can indeed be formulated in a
{\it mathematically} meaningful fashion even if does {\it not} derive
from a genuine Hamilton operator. In particular, the restoration of symmetries
can be entirely formulated without making {\it any} reference to a projected
state, i.e. within a genuine EDF framework. However, and as is illustrated in
the present document, a mathematically meaningful formulation does not
guarantee that the formalism is sound from a {\it physical} standpoint. The
price at which the latter can be enforced as well in the future is eventually
alluded to.Comment: 64 pages, 8 figures, submitted to Euroschool Lecture Notes in Physics
Vol.IV, Christoph Scheidenberger and Marek Pfutzner editor
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