114 research outputs found
New properties of scalar field dynamics in brane isotropic cosmological models
Several aspects of scalar field dynamics on a brane which differs from
corresponding regimes in the standard cosmology are investigated. We consider
asymptotic solution near a singularity, condition for inflation and bounces and
some detail of chaotic behavior in the brane model. Each results are compared
with those known in the standard cosmology.Comment: 13 pages with 2 eps figures, submitted to Astronomy Letter
Гранулематоз с полиангиитом: астмаподобное и псевдопневмоническое начало болезни
A case of granulomatosis with polyangiitis is described in the article. The patient experienced 3year paroxysmal asthmalike syndrome with granulomatous lesion of the subglottic portion of the larynx that further developed into multifocal destructive lesions of the lungs without clinical signs of glomerulonephritis and with positive response to combined therapy with cytostatic agents, rituximab and systemic steroids. The main criteria of granulomatosis with polyangiitis in this patient were high levels of ANCA and antiproteinase3 antibodies. Therefore, granulomatosis with polyangiitis is characterized by polymorphic onset of lung disease with coexisting paroxysmal respiratory syndrome, infiltrative and destructive pulmonary lesions.Представлено описание случая гранулематоза с полиангиитом, характеризовавшегося трехлетним пароксизмальным астмаподобным симптомокомлексом (на фоне гранулематозных изменений в подскладочном пространстве гортани), последующей трансформацией в многофокусное деструктивное поражение легких (при отсутствии клинических признаков гломерулонефрита) с положительным терапевтическим ответом при назначении комбинированного лечения цитостатическим препаратом, ритуксимабом, системными глюкокортикостероидами
Sampling and distribution pattern of Trioza erytreae Del Guercio, 1918 (Hemiptera: Triozidae) in citrus orchard
Developing efficient sampling protocols is essential to monitor crop pests. One vector of the citrus disease HLB, the African citrus psyllid Trioza erytreae Del Guercio, 1918 (Hemiptera: Triozidae), currently threatens the lemon industry throughout the Mediterranean region. In this work, a pool of sampling methods devoted to monitoring the population of T. erytreae was compared, its spatial distribution in the orchard was assessed, and the minimum sampling effort for the best sampling method was estimated. Three lemon orchards in North-western Portugal were sampled for one year using two types of yellow sticky traps (standard yellow and fluorescent Saturn yellow), B-vac sampling and sweep net sampling. The method that best performed, in terms of cost-efficiency, was the yellow sticky traps. The two colours of the sticky traps tested did not yield a significantly different number of catches. The spatial distribution throughout the orchards was found to be aggregated towards the borders. A minimum of three sticky traps per hectare was found to be enough to estimate the population at 90% accuracy for the mean during the outbreak. These results should help to monitor and anticipate outbreaks that may even colonize neighbour orchards. Studies on the local dispersion patterns of T. erytreae throughout the orchard are mandatory to further refine and optimize efficient monitoring protocols.The authors are grateful to the Foundation for Science and
Technology (FCT, Portugal), for financial support through national
funds FCT/MCTES to CIMO (UIDB/00690/2020) and to the project
PRE-HLB-Preventing HLB epidemics for ensuring citrus survival in
Europe (H2020-SFS-2018-2 Topic SFS-05-2018-2019-2020, proj. No. 817526).info:eu-repo/semantics/publishedVersio
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