Results 41 to 50 of about 406,608 (369)
Revista Brasileira de Zootecnia, 2009 Este trabalho foi conduzido com o objetivo de verificar o efeito da adição de antibiótico, probiótico, prebiótico e gluconato de sódio para suínos no período de 28 a 142 dias de idade, correspondente às fases de creche, crescimento e terminação.
Otto Mack Junqueira +5 more
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Silicates in D-type symbiotic stars: an ISO overview [PDF]
, 2007 We investigate the IR spectral features of a sample of D-type symbiotic stars. Analyzing unexploited ISO-SWS data, deriving the basic observational parameters of dust bands and comparing them with respect to those observed in other astronomical sources ...
Allen D. A. +22 more
core +2 more sources
Microorganisms, 2019 The applied importance of symbiosis has been gaining recognition. The relevance of symbiosis has been increasing in agriculture, in developing sustainable practices, including pest management.
Tânia Nobre
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Open Astronomy, 2012 AG Dra is a classical symbiotic star that undergoes major outbursts at intervals between 12-15 years. We present spectroscopic observations of four emission lines (Hα, Hβ, He II 4686 Å, Raman scattered OVI 6825 Å) before, during and after the major ...
Leedjärv L., Burmeister M.
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On the model of symbiotic stars [PDF]
International Astronomical Union Colloquium, 1982 AbstractWe discuss conditions necessary for appearance and discovery of the symbiotic star phenomenon within the model of a binary consisting of a red (super)giant 3 Mʘ not filling the Roche lobe and of an accreting hot degenerate CO-dwarf 0.8 Mʘ. Within this model “classical” symbiotic stars may exist only within a narrow region of mass accretion ...
A. V. Tutukov, L. R. Yungelson
openaire +2 more sources
Correction of UBV Photometry for Emission Lines
Open Astronomy, 2003 We investigate the effect on U,B,V magnitudes of the removal of emission lines from the spectra of some symbiotic stars and novae during their nebular phases.
Skopal A.
doaj +1 more source
Nature Communications, 2020 In legumes, shoot-derived signals regulate rhizobial symbiosis to balance the benefits of N2 fixation with the energy costs of nodule production. Here Okuma et al.
Nao Okuma +3 more
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Compartmentalization drives the evolution of symbiotic cooperation
Philosophical Transactions of the Royal Society of London. Biological Sciences, 2020 Across the tree of life, hosts have evolved mechanisms to control and mediate interactions with symbiotic partners. We suggest that the evolution of physical structures that allow hosts to spatially separate symbionts, termed compartmentalization, is a ...
G. Chomicki +4 more
semanticscholar +1 more source
Sinorhizobium fredii HH103 RirA is required for oxidative stress resistance and efficient symbiosis with Soybean [PDF]
, 2019 Members of Rhizobiaceae contain a homologue of the iron-responsive regulatory protein RirA. In different bacteria, RirA acts as a repressor of iron uptake systems under iron-replete conditions and contributes to ameliorate cell damage during oxidative ...
Acosta Jurado, Sebastián +7 more
core +1 more source
Nature Reviews Microbiology, 2013 Genomic and transcriptomic analyses reveal further genetic complexities in the tripartite nested mealybug symbiosis.
openaire +3 more sources