2,043 research outputs found
Marinobacter lutaoensis sp nov., a thermotolerant marine bacterium isolated from a coastal hot spring in Lutao, Taiwan
No full textThe development of a risk-adjusted capitation model based on principal inpatient diagnoses in Taiwan.
No full textHealthcare utilization pattern and risk adjustment under Taiwan’s National Health Insurance system.
No full text
LIN 358: a symbiotic binary accreting above the steady hydrogen fusion limit
No full textSymbiotic binaries are long-period interacting binaries consisting of a white dwarf (WD) accreting material from a cool evolved giant star via stellar winds. In this paper, we study the symbiotic binary LIN 358 located in the Small Magellanic Cloud. We have observed LIN 358 with the integral field spectrograph WiFeS and obtained its line emission spectrum. With the help of the plasma simulation and spectral synthesis code cloudy, we have constructed a 2D photoionization model of LIN 358. From comparison with the observations, we have determined the colour temperature of the WD in LIN 358 to be 19 eV, its bolometric luminosity L = (1.02 ± 0.15) × 1038 erg s−1, and the mass-loss rate from the donor star to be 1.2 × 10−6 M⊙ yr−1. Assuming a solar H to He ratio in the wind material, a lower limit to the accreted mass fraction in LIN 358 is 0.31. The high mass accretion efficiency of a wind Roche lobe overflow implies that the WD is accreting above the upper boundary of stable hydrogen fusion and thus growing in mass with the maximal rate of ≈4 × 10−7 M⊙ yr−1. This causes the WD photosphere to expand, which explains its low colour temperature. Our calculations show that the circumstellar material in LIN 358 is nearly completely ionized except for a narrow cone around the donor star, and that the WD emission is freely escaping the system. However, due to its low colour temperature, this emission can be easily attenuated by even moderate amounts of neutral interstellar medium. We speculate that other symbiotic systems may be operating in a similar regime, thus explaining the paucity of observed systems
Solving Coarse-grained DisCSPs with Multi-DisPeL and DisBO-wd
Full text linkWe present Multi-DisPel, a penalty-based local search distributed algorithm which is able to solve coarse-grained Distributed Constraint Satisfaction Problems (DisCSPs) efficiently. Multi-DisPeL uses penalties on values in order to escape local optima during problem solving rather than the popular weights on constraints. We also introduce DisBO-wd, a stochastic algorithm based on DisBO (Distributed Breakout) which includes a weight decay mechanism. We compare Multi-DisPeL and DisBO-wd with other algorithms and show, empirically, that they are more efficient and at least as effective as state of the art algorithms in some problem classes
Fate specification and tissue-specific cell cycle control of the <i>Caenorhabditis elegans</i> intestine
Full text linkCoordination between cell fate specification and cell cycle control in multicellular organisms is essential to regulate cell numbers in tissues and organs during development, and its failure may lead to oncogenesis. In mammalian cells, as part of a general cell cycle checkpoint mechanism, the F-box protein β-transducin repeat-containing protein (β-TrCP) and the Skp1/Cul1/F-box complex control the periodic cell cycle fluctuations in abundance of the CDC25A and B phosphatases. Here, we find that the Caenorhabditis elegans β-TrCP orthologue LIN-23 regulates a progressive decline of CDC-25.1 abundance over several embryonic cell cycles and specifies cell number of one tissue, the embryonic intestine. The negative regulation of CDC-25.1 abundance by LIN-23 may be developmentally controlled because CDC-25.1 accumulates over time within the developing germline, where LIN-23 is also present. Concurrent with the destabilization of CDC-25.1, LIN-23 displays a spatially dynamic behavior in the embryo, periodically entering a nuclear compartment where CDC-25.1 is abundant
Arabidopsis FERROMICS: parallel interrogation of changes in the quantitative (phospho-)proteome and transcriptome of arabidopsis roots upon Fe deficiency using iTRAP and mRNAseq
No full textFull and ideal mixing behavior between Zr-Wd (K2ZrSi3O9) and Ti-Wd (K2TiSi3O9): evidences from mineral chemistry, X-ray diffraction pattern and Raman spectrum
No full textA series of wadeite solid solutions (Wd(ss)) along the join K2ZrSi3O9 (Zr-wadeite, Zr-Wd)-K2TiSi3O9 (Ti-wadeite, Ti-Wd) was synthesized at 2 GPa and 1,200-1,400 A degrees C for 24 h with a piston-cylinder apparatus. The chemical composition data demonstrated that Ti and Zr readily substitute for each other, and a full series of Wd(ss) exists between the Zr-Wd and Ti-Wd end-members at the P-T conditions of our synthesizing experiments. The volume-composition relationship at ambient P-T conditions did not show any significant deviation from the Vegard's law, indicating a nearly ideal mixing between the Zr-Wd and Ti-Wd. All the Raman peaks observed at ambient P-T conditions were linearly correlated with the composition, suggesting an almost full structural relaxation for the Wd(ss). These findings suggest that the complete mixing behavior along the join K2ZrSi3O9-K2TiSi3O9, as demonstrated by our high-P experiments, may extend to a much wider range of P-T conditions. Consequently, the coexistence of the Zr-Wd and Ti-Wd in the lamproites from the Leucite Hills, Wyoming, may be due to a chemical composition change of the magma rather than a crystal structural limit.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000350310900006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Materials Science, MultidisciplinaryMineralogySCI(E)[email protected]
Light curves of the explosion of ONe WD+CO WD merger remnant and type Icn supernovae
Full text linkType Icn supernovae (SNe Icn) are a newly detected rare subtype of
interacting stripped-envelope supernovae which show narrow P-Cygni lines of
highly ionized carbon, oxygen, and neon in their early spectra due to the
interactions of the SNe ejecta with dense hydrogen- and helium-deficient
circumstellar material (CSM). It has been suggested that SNe Icn may have
multiple progenitor channels, such as the explosion of carbon-rich Wolf-Rayet
stars, or the explosion of stripped-envelope SNe which undergo binary
interactions. Among the SNe Icn, SN 2019jc shows unique properties, and
previous work inferred that it may stem from the ultra-stripped supernova, but
other possibilities still exist. In this work, we aim to simulate the light
curves from the explosions of oxygen-neon and carbon-oxygen double white dwarf
(WD) merger remnants, and to further investigate whether the corresponding
explosions can appear as some particular SNe Icn. We generate the light curves
from the explosive remnants and analyse the influence of different parameters
on the light curves, such as the ejecta mass, explosion energy, mass of Ni56
and CSM properties. Comparing our results with some SNe Icn, we found that the
light curves from the explosions of double WD merger remnants can explain the
observable properties of SN 2019jc, which inferred that this special SN Icn may
have a different progenitor. Our results indicated that double WD merger may be
an alternative model in producing at least one of the SNe Icn.Comment: 11 pages, 5 figures, accepted for publication in ApJ
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