122 research outputs found
Finite driving rates in interface models of Barkhausen noise
We consider a single-interface model for the description of Barkhausen noise
in soft ferromagnetic materials. Previously, the model had been used only in
the adiabatic regime of infinitely slow field ramping. We introduce finite
driving rates and analyze the scaling of event sizes and durations for
different regimes of the driving rate. Coexistence of intermittency, with
non-trivial scaling laws, and finite-velocity interface motion is observed for
high enough driving rates. Power spectra show a decay , with
for finite driving rates, revealing the influence of the internal
structure of avalanches.Comment: 7 pages, 6 figures, RevTeX, final version to be published in Phys.
Rev.
Advances in diagnosis of gastrointestinal nematodes in livestock and companion animals
92 páginas, 3 tablas, 4 figuras.Diagnosis of gastrointestinal nematodes in livestock and companion animals has been
neglected for years and there has been an historical underinvestment in the develop-
ment and improvement of diagnostic tools, undermining the undoubted utility of
surveillance and control programmes. However, a new impetus by the scientific com-
munity and the quickening pace of technological innovations, are promoting a renais-
sance of interest in developing diagnostic capacity for nematode infections in veterinary
parasitology. A cross-cutting priority for diagnostic tools is the development of pen-side
tests and associated decision support tools that rapidly inform on the levels of infection
and morbidity. This includes development of scalable, parasite detection using artificial
intelligence for automated counting of parasitic elements and research towards esta-
blishing biomarkers using innovative molecular and proteomic methods. The aim of this
review is to assess the state-of-the-art in the diagnosis of helminth infections in livestock
and companion animals and presents the current advances of diagnostic methods for
intestinal parasites harnessing (i) automated methods for copromicroscopy based on
artificial intelligence, (ii) immunodiagnosis, and (iii) molecular- and proteome-based
approaches. Regardless of the method used, multiple factors need to be considered
before diagnostics test results can be interpreted in terms of control decisions.
Guidelines on how to apply diagnostics and how to interpret test results in different
animal species are increasingly requested and some were recently made available in
veterinary parasitology for the different domestic species.This article is based in part upon work from COST Action COMBAR CA16230, supported by COST (European Cooperation in Science and Technology). It is also based upon work conducted by the STAR-IDAZ IRC Scientific sub-Committee “Diagnostic test roadmap” developed by the Livestock Helminth Research Alliance (LiHRA; June 2019) with major contributions of John Gilleard, Georg von Samson Himmelstjerna, Diana Williams, Laura Rinaldi, Edwin Claerebout, Peter Geldhof and Jozef Vercruysse.Peer reviewe
Reconstructing the deep-branching relationships of the papilionoid legumes
Resolving the phylogenetic relationships of the deep nodes of papilionoid legumes (Papilionoideae) is essential to understanding the evolutionary history and diversification of this economically and ecologically important legume subfamily. The early-branching papilionoids include mostly Neotropical trees traditionally circumscribed in the tribes Sophoreae and Swartzieae. They are more highly diverse in floral morphology than other groups of Papilionoideae. For many years, phylogenetic analyses of the Papilionoideae could not clearly resolve the relation- ships of the early-branching lineages due to limited sampling. In the eight years since the publication of Legumes of the World, we have seen an extraordinary wealth of new molecular data for the study of Papilionoideae phylogeny, enabling increasingly greater resolution and many surprises. This study draws on recent molecular phylogenetic studies and a new comprehensive Bayesian phylogenetic analysis of 668 plastid matK sequences. The present matK phylogeny resolves the deep-branching relationships of the papilionoids with increased support for many clades, and suggests that taxonomic realignments of some genera and of numerous tribes are necessary. The potentially earliest-branching papilionoids fall within an ADA clade, which includes the recircumscribed monophyletic tribes Angylocalyceae, Dipterygeae, and Amburanae. The genera Aldina and Amphimas represent two of the nine main but as yet unresolved lineages comprising the large 50-kb inversion clade. The quinolizidine-alkaloid-accumulating Genistoid s.l. clade is expanded to include Dermatophyllum and a strongly supported and newly circumscribed tribe Ormosieae. Sophoreae and Swartzieae are dramatically reorganized so as to comprise mono-phyletic groups within the Core Genistoid clade and outside the 50-kb inversion clade, respectively. Acosmium is excluded from the Genistoids s.l. and strongly resolved within the newly circumscribed tribe Dalbergieae. By providing a better resolved phylogeny of the earliest-branching papilionoids, this study, in combination with other recent evidence, will lead to a more stable phylogenetic classification of the Papilionoideae.Web of Scienc
Comparative study of the sedative and antinociceptive effects of levomepromazine, azaperone and midazolam in laboratory animals
Construction of yellow fever virus subgenomic replicons by yeast-based homologous recombination cloning technique
Fishes from the Jaru Biological Reserve, Machado River drainage, Madeira River basin, Rondônia State, northern Brazil
Seleção de progênies de meios-irmãos do composto Isanão VF-1 de milho na safra e safrinha
Parâmetros da degradação protéica ruminal de diferentes alimentos e rações estimados por técnica in vitro
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