3,539 research outputs found
Lagrangian Floer potential of orbifold spheres
For each sphere with three orbifold points, we construct an algorithm to compute the open GromovâWitten potential, which serves as the quantum-corrected LandauâGinzburg mirror and is an infinite series in general. This gives the first class of general-type geometries whose full potentials can be computed. As a consequence we obtain an enumerative meaning of mirror maps for elliptic curve quotients. Furthermore, we prove that the open GromovâWitten potential is convergent, even in the general-type cases, and has an isolated singularity at the origin, which is an important ingredient of proving homological mirror symmetry.National Research Foundation of Korea; 2010-0019516; 2012R1A1A2003117; 2013R1A1A1058646 - National Research Foundation of Kore
A STUDY ON THE TWO-ROW EFFECT IN THE SLOSHING PHENOMENON
In this study, changes in fluid impact loads inside a tank were examined according to a two-row tank arrangement in an LNG-FPSO (Liquefied Natural Gas-Floating Production Storage Offloading) vessel. The motion RAO (Response Amplitude Operator) of the LNG-FPSO, coupled with the sloshing phenomenon inside the tank, was calculated by using HydroStar by Bureau Veritas. The motion simulation in the tank was conducted under filling ratios of 30%H, 60%H, and 80%H. The RAO in each condition was calculated according to the one-row and the two-row tank arrangement. The motion response spectrum using the calculated RAO and the JONSWAP (Joint North Sea Wave Analysis Project) spectrum were computed by implementing irregular motion according to each filling ratio and tank arrangement. The sloshing phenomenon inside the tank was implemented by using a 6-DOF (Degree Of Freedom) sloshing motion platform; impact pressure on the walls of the tank was measured with pressure sensors installed inside the tank. The sloshing experiment was conducted under the three filling ratios in the one-row and the two-row tank arrangement and impact loads were compared under each filling ratio according to the one-row and the two-row tank arrangement
Fulminant myocarditis managed with pulsatile extracorporeal life support; use of Twin Pulse Life support (T-PLSÂŽ)
Fulminant myocarditis frequently results in severe hemodynamic deterioration. High-dose vasopressors or sometimes mechanical circulatory support are required. We report on two cases of fulminant myocarditis successfully treated with pulsatile extracorporeal life support (T-PLSÂŽ, Twin Pulse Life support, New heart bio.BHK, Seoul, Korea). With T-PLS, we were able to provide mechanical support to patients until they recovered completely
Chemical homogeneity of wide binary system: An approach from Near-Infrared spectroscopy
Wide binaries, with separations between two stars from a few AU to more than
several thousand AU, are valuable objects for various research topics in
Galactic astronomy. As the number of newly reported wide binaries continues to
increase, studying the chemical abundances of their component stars becomes
more important. We conducted high-resolution near-infrared (NIR) spectroscopy
for six pairs of wide binary candidates using the Immersion Grating Infrared
Spectrometer (IGRINS) at the Gemini-South telescope. One pair was excluded from
the wide binary samples due to a significant difference in radial velocity
between its component stars, while the remaining five pairs exhibited
homogeneous properties in 3D motion and chemical composition among the pair
stars. The differences in [Fe/H] ranged from 0.00 to 0.07 dex for these wide
binary pairs. The abundance differences between components are comparable to
the previous results from optical spectroscopy for other samples. In addition,
when combining our data with literature data, it appears that the variation of
abundance differences increases in wide binaries with larger separations.
However, the SVO2324 and SVO3206 showed minimal differences in most elements
despite their large separation, supporting the concept of multiple formation
mechanisms depending on each wide binary. This study is the first approach to
the chemical properties of wide binaries based on NIR spectroscopy. Our results
further highlight that NIR spectroscopy is an effective tool for stellar
chemical studies based on equivalent measurements of chemical abundances from
the two stars in each wide binary system.Comment: 16 pages, 9 figures, accepted for publication in A
Adiponectin may contribute to synovitis and joint destruction in rheumatoid arthritis by stimulating vascular endothelial growth factor, matrix metalloproteinase-1, and matrix metalloproteinase-13 expression in fibroblast-like synoviocytes more than proinflammatory mediators
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