• Title/Summary/Keyword: DOBO

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Development and validation of wall and interfacial friction models in LOCUST for reactor downcomer with direct vessel injection

  • Rongshuan Xu;Xinan Wang;Caihong Xu;Dongyu He;Ting Wang;Jinggang Li
    • Nuclear Engineering and Technology
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    • v.56 no.10
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    • pp.4397-4403
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    • 2024
  • The multi-dimensional thermal-hydraulic phenomena in the downcomer of advanced pressurized water reactor with direct vessel injection system are the key points for the safety analysis during a loss of coolant accident. In order to improve the accuracy of LOCUST code for the predictions of thermal-hydraulic phenomena in downcomer region, some newly correlations have been implemented into LOCUST code. The wall friction model of LOCUST code was modified based on the correlations which developed by Yang. The interfacial friction models in LOCUST code have been modified as Hibiki-Ishii correlations. In addition, in order to simulate the upward flow of recirculation flow in downcomer region, the Kinoshita-Hibiki correlations have been also implemented into LOCUST code for better simulating the recirculation flow in downcomer region. The modified code was validated with experimental data of DOBO facility. Five tests of DOBO facility have been calculated by LOCUST, and the calculated axial void fraction distributions have been compared with the measurements. The results show that the modified LOCUST with new correlations of distribution parameter and drift velocity shows better accuracy than the original code. The deviations of the modified LOCUST code are less than the original code and are almost within ±20 %.

A Study on Changes of the Central Part of Beomeosa Temple - Based on Photographs and Drawings - (범어사(梵魚寺) 가람배치(伽藍配置)의 중단영역(中壇領域) 변화(變化)에 관한 연구(硏究) - 사진(寫眞)과 도판(圖版)을 중심(中心)으로 -)

  • Youn, Suk-Hwan;Han, Sam-Geon
    • Journal of architectural history
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    • v.14 no.4 s.44
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    • pp.41-58
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    • 2005
  • This study was started under the judgement that reviewing $\ulcorner$A Survey Report of Korean Architecture$\lrcorner$, which contains photographs and drawings by Sekino Tadashi and which was also made under the order of the Japanese government(1902), would make it possible to consider in detail the status of Korean buildings in the period of the Korean Empire. The focus of the study. was put on three main parts of the temple, especially the central parts. The photographs and drawings as mentioned above showed that changes in the layout of buildings in the central part of the temple were made between the period of the Korean Empire and that of Japanese occupation. Thus the purpose of the study is to investigate when changes in building layout in the central part of the temple were made and what made such changes to be caused, obtaining information necessary for future changes in the precincts of the temple. Results of the study can be summarized as follows. First, 'Seonchal Daebonsan Beomeosa feonkeongdo' and 'Gyeongsangnamdo Dongraegun Beomeosa Geonmul Jeondo' were made in a same period. While, 'Chosun Gojeok Dobo', published by the government-general of Chosun, was a collection of photographs taken by Sekino Tadashi for about 30 years from 1902 to 1933 under the order of the Japanese government. But there were few changes in the building layout of the temple shown in the three materials. Second, one of the photographs and drawings made since 1933, not contained in 'Chosun Gojeok Dobo', and discovered by this researcher was 'Seonchal Daebonsan Beomeosa Annae' which was published by the temple itself after national independence from the period of Japanese occupation, indicating the main reason of changes in building layout as mentioned above. In conclusion, the layout of buildings of the temple began to be changed on a large scale, with so-called 'Cheyongseol' ignored, when Buddhist monk Cha Woon Ho established a 7-storied sarira tower to the left of the main building in the center of the upper part in 1936. In addition, the axis line connecting between Hwaeomjong and Seonjong was also changed at that time.

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HSP27 is Commonly Expressed in Cervical Intraepithelial Lesions of Brazilian Women

  • Dobo, Cristine;Stavale, Joao Norberto;Lima, Flavio De Oliveira;Ribeiro, Daniel Araki;Arias, Vitor;Gomes, Thiago Simao;Oshima, Celina Tizuko Fujiyama
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.9
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    • pp.5007-5010
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    • 2013
  • Heat shock proteins are molecular chaperones that may be constitutively present in cells protecting them from various stresses, such as extreme temperature, anoxia or chemical agents. Cervical cancer is the second most prevalent malignancy of women. In this study, we analyzed the expression of Hsp27 by immunohistochemistry in cervical intraepithelial lesions of Brazilian women, along with samples from non neoplasic lesions (NN). Cervical intraepithelial neoplasia I (CIN I), II (CIN II) and III (CIN III)/in situ carcinoma and squamous cell carcinoma (SCC) were included. Immunostaining was observed in 30 (100%) samples of NN, 46 (92%) in CIN I, 50 (100%) in CIN II, 52 (98.11%) in CIN III/CIS, and 46 (98.11%) in SCC. In group NN Hsp27 immunostaining was heterogeneous, more intense in basal and parabasal layers of the epithelium and less or absent in the intermediate and superficial layer. The majority of the samples of CIS and SCC presented strong staining in all epithelial layers. Metaplasic cells, when present, were strongly stained. In this study, Hsp27 protein was found to be commonly expressed in cervical epithelial cells.