نتایج جستجو برای: r23
تعداد نتایج: 330 فیلتر نتایج به سال:
A correction to Serendipitous discovery of Wolbachia genomes in multiple Drosophila species by SL Salzberg, JC Dunning Hotopp, AL Delcher, M Pop, DR Smith, MB Eisen and WC Nelson. Genome Biology 2005, 6:R23.
We study whether integrated optical spectroscopy of a disk galaxy can be used to infer the mean, or characteristic gas-phase oxygen abundance in the presence of systematic effects such as spatial abundance variations, contributions to the integrated emission-line spectrum from diffuse-ionized gas, and dust attenuation. Our sample consists of 14 nearby disk galaxies with integrated spectrophotom...
Amodel of spectral evolution of star forming galaxies of various metallicity has been used to study the relation between the optical emission line ratio R23= ([OII]λ3727 +[OIII]λλ4959,5007)/Hβ and the nebular oxygen abundance. It is shown that the scatter in an empirical comparison sample could be due to various upper stellar mass limits or different slopes of the stellar initial mass function ...
Generally the gas metallicity in distant galaxies can only be inferred by using a few prominent emission lines. Various theoretical models have been used to predict the relationship between emission line fluxes and metallicity, suggesting that some line ratios can be used as diagnostics of the gas metallicity in galaxies. However, accurate empirical calibrations of these emission line flux rati...
We consider a general class of boundary terms of the open XYZ spin-1/2 chain compatible with integrability. We have obtained the general elliptic solution of K-matrix obeying the boundary Yang-Baxter equation using the R-matrix of the eight vertex model and derived the associated integrable spin-chain Hamiltonian. 1+1 dimensional integrable models with boundaries find interesting applications i...
Cationic antimicrobial peptides are recognized templates for developing a new generation of antimicrobials to combat superbugs. Human cathelicidin LL-37 is an essential host defense molecule in human innate immunity. Previously, we identified KR-12 as the smallest antibacterial peptide of LL-37. KR-12 has a narrow activity spectrum since it is active against Gram-negative Escherichia coli but n...
We provide evidence of the stock market consumption wealth effect by using a local labor analysis. An increase in driven aggregate prices increases employment and payroll nontradable industries total, with no on tradable industries. In model geographic heterogeneity wealth, these responses imply an MPC 3.2 cents per year that 20 percent valuations, unless countered monetary policy, bill at leas...
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