265 research outputs found

    The Stellar Mass, Star Formation Rate and Dark Matter Halo Properties of LAEs at z2z\sim2

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    We present average stellar population properties and dark matter halo masses of z2z \sim 2 \lya emitters (LAEs) from SED fitting and clustering analysis, respectively, using \simeq 12501250 objects (NB38725.5NB387\le25.5) in four separate fields of 1\simeq 1 deg2^2 in total. With an average stellar mass of 10.2±1.8×108 M10.2\, \pm\, 1.8\times 10^8\ {\mathrm M_\odot} and star formation rate of 3.4±0.4 M yr13.4\, \pm\, 0.4\ {\mathrm M_\odot}\ {\rm yr^{-1}}, the LAEs lie on an extrapolation of the star-formation main sequence (MS) to low stellar mass. Their effective dark matter halo mass is estimated to be $4.0_{-2.9}^{+5.1} \times 10^{10}\ {\mathrm M_\odot}withaneffectivebiasof with an effective bias of 1.22^{+0.16}_{-0.18}whichislowerthanthatof which is lower than that of z \sim 2LAEs( LAEs (1.8\, \pm\, 0.3),obtainedbyapreviousstudybasedonathreetimessmallersurveyarea,withaprobabilityof), obtained by a previous study based on a three times smaller survey area, with a probability of 96\%. However, the difference in the bias values can be explained if cosmic variance is taken into account. If such a low halo mass implies a low HI gas mass, this result appears to be consistent with the observations of a high \lya escape fraction. With the low halo masses and ongoing star formation, our LAEs have a relatively high stellar-to-halo mass ratio (SHMR) and a high efficiency of converting baryons into stars. The extended Press-Schechter formalism predicts that at z=0ourLAEsaretypicallyembeddedinhaloswithmassessimilartothatoftheLargeMagellanicCloud(LMC);theywillalsohavesimilarSHMRstotheLMC,iftheirSFRsarelargelysuppressedafter our LAEs are typically embedded in halos with masses similar to that of the Large Magellanic Cloud (LMC); they will also have similar SHMRs to the LMC, if their SFRs are largely suppressed after z \sim 2$ as some previous studies have reported for the LMC itself.Comment: 34 pages, 15 figures, 6 tables. Accepted for publication in PAS

    Duodenal ulcer penetration into the superior mesenteric artery after percutaneous transluminal angioplasty and stent placement for acute mesenteric ischemia: report of a case

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    A 78-year-old male presented with the chief complaints of abdominal pain and vomiting. Contrast-enhanced computed tomography and abdominal angiography showed occlusion of the superior mesenteric artery due to thrombosis, and emergency percutaneous transluminal angioplasty and stent placement were carried out. Two months later, stent thrombosis developed, and a second stent was placed. Eight months later, he complained of general fatigue and anorexia. Gastrointestinal endoscopy revealed a duodenal ulcer at the third portion close to the superior mesenteric artery. Thirteen days after conservative management, duodenal ulcer penetration into the superior mesenteric artery with subsequent air embolism developed, and the patient died of multiple organ failure

    Comparison of Short and Continuous Hydration Regimen in Chemotherapy Containing Intermediate- to High-Dose Cisplatin

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    Aim. The efficacy of the short hydration regimen was reported in chemotherapy containing intermediate- to high-dose cisplatin, and the use of outpatient chemotherapy containing cisplatin with short hydration has been widespread in recent years. Methods. We compared patients with gastric cancer, lung cancer, and urothelial cancer who received outpatient chemotherapy containing cisplatin (≥60 mg/m2/cycle) with the short hydration regimen since April 2012 (n=13) with those who received hospital chemotherapy with continuous hydration between April 2011 and March 2013 (n=17) in our hospital. Results. Grade 2 or higher acute kidney injury occurred in 2 patients in the continuous hydration group and in no patient in the short hydration group; 1 patient discontinued treatment on account of nephrotoxicity. There was no difference between the 2 groups in maximum creatinine increment and maximum clearance decrement. Relative dose intensity in the short hydration group was higher than that in the continuous hydration group (89.5% versus 80.3%; P<0.01). Conclusions. The short hydration regimen in outpatient chemotherapy containing intermediate- to high-dose cisplatin is as safe as the continuous hydration regimen and increased the efficacy of chemotherapy

    The Crystal Structure, Absolute Configuration and Circular Dichroism of (-)CD630 - and (+ )CD630 -cis-Bis[2-(2-benzoxazolyl)phenol-N]dichloroplatinum(II) . Ethanol

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    The crystals of the title complex resolve spontaneously, They are orthorhombic, space group P212121, a = 1034.6(4), b = 3120(6), c = 835.3(4) pm and Z = 4. The final R values of the enantiomers are 0.036 and 0.047 for 2873 and 3622 unique reflections, respectively. This is a square-planar complex with 2 Cl atoms in cispositions. The Iigand molecule acts as a unidentate and is coordinated to the Pt atom with its N atom. The average Pt-Cl and Pt-N distances are 228.9(3) and 200.9(8) pm, respectively. The two benzoxazolyl moieties are approximately related by a twofold rotation axis through the central Pt atom and the midpoint of the two N atoms. The optical activity arises from the dissymmetric disposition of the two ligand molecules with respect to the coordination plane. The CD spectra in the range 13,000-40,000 cm-1 were measured in KBr matrix. The CD patterns were correlated with the absolute configuration as well as the crystal habit
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