• Title/Summary/Keyword: Radial Parameters

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The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the emission line galaxy sample from the anisotropic power spectrum between redshift 0.6 and 1.1

  • Arnaud de Mattia;Vanina Ruhlmann-Kleider;Anand Raichoor;Ashley J Ross;Amelie Tamone;Cheng Zhao;Shadab Alam;Santiago Avila;Etienne Burtin;Julian Bautista;Florian Beutler;Jonathan Brinkmann;Joel R Brownstein;Michael J Chapman;Chia-Hsun Chuang;Johan Comparat;Helion du Mas des Bourboux;Kyle S Dawson;Axel de la Macorra;Hector Gil-Marin;Violeta Gonzalez-Perez;Claudio Gorgoni;Jiamin Hou;Hui Kong;Sicheng Lin;Seshadri Nadathur;Jeffrey A Newman;Eva-Maria Mueller;Will J Percival;Mehdi Rezaie;Graziano Rossi;Donald P Schneider;Prabhakar Tiwari;M Vivek;Yuting Wang;Gong-Bo Zhao
    • Monthly Notices of the Royal Astronomical Society
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    • v.501 no.4
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    • pp.5616-5645
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    • 2021
  • We analyse the large-scale clustering in Fourier space of emission line galaxies (ELG) from the Data Release 16 of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey. The ELG sample contains 173 736 galaxies covering 1170 deg2 in the redshift range 0.6 eff = 0.845 we measure DV(zeff)/rdrag = 18.33+0.57-0.62, with DV the volume-averaged distance and rdrag the comoving sound horizon at the drag epoch. In combination with the RSD measurement, at zeff = 0.85 we find fσ8(zeff) = 0.289+0.085-0.096, with f the growth rate of structure and σ8 the normalization of the linear power spectrum, DH(zeff)/rdrag = 20.0+2.4-2.2 and DM(zeff)/rdrag = 19.17 ± 0.99 with DH and DM the Hubble and comoving angular distances, respectively. These results are in agreement with those obtained in configuration space, thus allowing a consensus measurement of fσ8(zeff) = 0.315 ± 0.095, DH(zeff)/rdrag = 19.6+2.2-2.1 and DM(zeff)/rdrag = 19.5 ± 1.0. This measurement is consistent with a flat ΛCDM model with Planck parameters.

The Influences of Perfusion Temperature on Inflammatory and Hematologic Responses during Cardiopulmonary Bypass (체외순환시 염증과 혈액학적 반응에 대한 관류온도의 영향)

  • 김상필;최석철;박동욱;한일용;이양행;조광현;황윤호
    • Journal of Chest Surgery
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    • v.37 no.10
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    • pp.817-826
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    • 2004
  • Background: Several studies have demonstrated that conventional hypothermic cardiopulmonary bypass (CPB) causes cellular injury, abnormal responses in peripheral vascular beds and increased postoperative bleeding, whereas normothermic CPB provides protection of the hypothermic-induced effects and better cardiac recovery. The present study was prospectively performed to compare the effects of normothermic CPB to those of hypothermic CPB on the inflammatory and hematologic responses during cardiac surgery. Material and Method: Thirty-four adult patients scheduled for elective cardiac surgery were randomly assigned to hypothermic CPB (nasopharyngeal temperature $26~28^{\circ}C,$ n=17) or normothermic CPB (nasopharyngeal $temperature>35.5^{\circ}C,$ n=17) group. In both groups, cold $(4^{\circ}C)$ crystalloid cardioplegia was applied for myocardial protection. Blood samples were drawn from radial artery before (Pre-CPB), 10 minutes after starting (CPB-10) and immediately after ending (CPB-OFF) CPB. Total leukocyte and platelet counts, interleukin-6 (IL-6) level(expressed as percent to the baseline of Pre-CPB), D-dimer level, protein C and protein S activity were measured with the blood samples. The amount of bleeding for postoperative 24 hours and blood transfusion after operation were also assessed. All parameters were compared between the two groups. Result: The total leukocyte counts $(10,032\pm65/mm^3)$ and the increased ratio of IL-6 $(353\pm7.0%)$ at CPB-OFF in the normothermic group were higher than that $(7,254\pm48/mm^3$ and $298\pm7.3%)$ of the hypothermic group(p=0.02 and p=0.03). In the normothermic group, protein C activity $(32\pm3.8%)$ and protein S activity $(35\pm4.1%)$ at CPB-OFF were significantly lower than that $(45\pm4.3%$ and $51\pm3.8%)$ of the hypothermic group (p=0.04 and p=0.009). However, there were no differences in platelet counts and D-dimer concentration. In the normothermic group, the amount of bleeding for postoperative 24 hours $(850\pm23.2$ mL) and requirements for blood transfusion after operation such as packed cell $(1,402\pm20.5$ mL), fresh frozen plasma $(970\pm20.8$ mL) and platelet $(252\pm6.4$ mL) were higher than that $(530\pm21.5$ mL, $696\pm15.7$ mL, $603\pm18.2$ mL and $50\pm0.0$ mL) of the hypothermic group. Conclusion: These results indicate that normothermic CPB with cold crystalloid cardioplegia was associated with higher increase in inflammatory response, hemostatic abnormalities and postoperative bleeding problem than moderate hypothermic CPB.