• Title/Summary/Keyword: RIM

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A Study of Side Pain Chapter of 『Eui Rim Chwal Yo』 (『의림촬요(醫林撮要)』의 「협통문(脇痛門)」에 관(關)한 소고(小考) -『의림촬요(醫林撮要)』와 『동의보감(東醫寶鑑)』의 비교고찰(比較考察) 2 -)

  • Kim, Hong-kyoon
    • The Journal of Korean Medical History
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    • v.13 no.2
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    • pp.63-80
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    • 2000
  • Through comparative study of side pain in "Eui Rim Chwal Yo" to that of "Dong Eui Bo Gam", I have found out that thet represent the status of Chosun era medicinve transforming to innovating system.

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A Study on the Round Clay Rim Pottery Culture in Kangwon Region (강원지역의 점토대토기문화 고찰)

  • Lee, Suk-Im
    • KOMUNHWA
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    • no.69
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    • pp.63-89
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    • 2007
  • The Archaeological sites of so called Round Clay Rim Pottery (Jeomtodaetogi : 점토대토기) culture in Kangwon region have been rarely excavated in proper form. Since most cases belong to those of ground surface gatherings, it is difficult to certify the nature and the association with other artifacts. Therefore, researches on that culture have been limited to simply set the chronological order in the Bronze Age in realtion with the Plain Pottery culture. However, a comparative study trying to explain the Round Clay Rim Pottery culture in both Yeongseo(영서) and Yeongdong(영동) has become possible thanks to recent excavation results from the sites of Chilgeon-dong(칠전동) in Chunchon City(춘천시) and Songrim-ri(송림리) in Kangneung City(강릉시), for example. Certain difference can be observed in form and amount of artifacts in between Yeongseo and Yeongdong. Such difference can be seen as individual localization in different places diffused from a common source, rather than showing different stages of unilineal developmental process of one culture. The Round Clay Rim Pottery culture seems to have been coexisted with the Rim-Perforated Pottery(공렬토기) and Dolmen(지석묘) culture. According to the radiocarbondatings, the upper time limit of the Round Clay Rim Pottery culture goes back considerably beyond the alleged upper limit of either the late fourth century or the second century B.C.. However, both cultures absorbed into the Iron Culture during the same period.

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Prognosis after Curative Resection of Single Hepatocellular Carcinoma with A Focus on LI-RADS Targetoid Appearance on Preoperative Gadoxetic Acid-Enhanced MRI

  • Ji Yoon Moon;Ji Hye Min;Young Kon Kim;Donglk Cha;Jeong Ah Hwang;Seong Eun Ko;Seo-Youn Choi;Eun Joo Yun;Seon Woo Kim;Ho-Jeong Won
    • Korean Journal of Radiology
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    • v.22 no.11
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    • pp.1786-1796
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    • 2021
  • Objective: To evaluate the prognostic implications of preoperative magnetic resonance imaging (MRI) features of hepatocellular carcinoma (HCC) with a focus on those with targetoid appearance based on the Liver Imaging Reporting and Data System (LI-RADS), as well as known microvascular invasion (MVI) features. Materials and Methods: This retrospective study included 242 patients (190 male; mean age, 57.1 years) who underwent surgical resection of a single HCC (≤ 5 cm) as well as preoperative gadoxetic acid-enhanced MRI between January 2012 and March 2015. LI-RADS category was assigned, and the LR-M category was further classified into two groups according to rim arterial-phase hyperenhancement (APHE). The imaging features associated with MVI were also assessed. The overall survival (OS), recurrence-free survival (RFS), and their associated factors were evaluated. Results: Among the 242 HCCs, 190 (78.5%), 25 (10.3%), and 27 (11.2%) were classified as LR-4/5, LR-M with rim APHE, and LR-M without rim APHE, respectively. LR-M with rim APHE (vs. LR-4/5; hazard ratio [HR] for OS, 5.48 [p = 0.002]; HR for RFS, 2.09 [p = 0.042]) and tumor size (per cm increase; HR for OS, 6.04 [p = 0.009]; HR for RFS, 1.77 [p = 0.014]) but not MVI imaging features (p > 0.05) were independent factors associated with OS and RFS. Compared to the 5-year OS and RFS rates in the LR-4/5 group (93.9% and 66.8%, respectively), the LR-M with rim APHE group had significantly lower rates (68.0% and 45.8%, respectively, both p < 0.05), while the LR-M without rim APHE group did not significantly differ in the survival rates (91.3% and 80.2%, respectively, both p > 0.05). Conclusion: Further classification of LR-M according to the presence of rim APHE may help predict the postoperative prognosis of patients with a single HCC.

Stability of Attached Flame in $H_2$/CO Syngas Non-premixed Turbulent Jet Flame ($H_2$/CO 합성가스 비예혼합 난류 제트화염에서 부착화염의 화염안정화)

  • Hwang, Jeong-Jae;Bouvet, Nicolas;Sohn, Ki-Tae;Yoon, Young-Bin
    • Journal of the Korean Society of Combustion
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    • v.17 no.1
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    • pp.22-29
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    • 2012
  • The detachment stability characteristics of syngas $H_2$/CO jet attached flames were studied. The flame stability was observed while varying the syngas fuel composition, coaxial nozzle diameter and fuel nozzle rim thickness. The detachment stability limit of the syngas single jet flame was found to decrease with increasing mole fraction of carbon monoxide in the fuel. In hydrogen jet flames with coaxial air, the flame detachment stability was found to be independent of the coaxial nozzle diameter. However, velocities of appearance of liftoff and blowout velocities of lifted flames have dependence. At lower fuel velocity range, the critical coaxial air velocity leading to flame detachment increases with increasing fuel jet velocity, whereas at higher fuel velocity range, it decreases. This increasing-decreasing non-monotonic trend appears for all $H_2$/CO syngas compositions (50/50~100/0% $H_2$/CO). To qualitatively understand the flame behavior near the nozzle rim, $OH^*$ chemiluminescence imaging was performed near the detachment limit conditions. For all fuel compositions, local extinction on the rim is observed at lower fuel velocities(increasing stability region), while local flame extinction downstream of the rim is observed at higher fuel velocities(decreasing stability region). Maximum values of the non-monotonic trends appear to be identical when the fuel jet velocity is normalized by the critical fuel velocity obtained in the single jet cases.

Flow Behavior of Thin Polymer Film by various patterns in Spinning Coating Process of Blu-ray Disc Cover layer (블루레이 디스크의 커버레이어 스핀 코팅 시 다양한 패턴에 따른 최적화된 폴리머 거동에 관한 연구)

  • Cho K. C.;Park Y. H.;Kim H. Y.;Kim B. H.;Lee B. G.;Son S. G.;Shin H. K.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2005.10a
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    • pp.467-471
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    • 2005
  • In this paper, experimental methods about the flow behavior of thin polymer film by various edge patterns in the spin coating process for stable cover layer coating of a blu-ray disc is described. The blu-ray disc, a next-generation optical disc format over 25GB, consists of a 1.1m thick substrate and a 0.1mm tick cover layer. Generally, cover layer on the blu-ray disc is made by the polymer spin coating process. However, it is hard to secure sufficient coating uniformity around the rim on the cover layer. In order to get the uniform thickness deviation and to minimize the bead around the rim, the edge of the disc substrate can be modified into various patterns, such as normal plain, trench, step and chamfer pattern, etc, around the rim on the disc and experimented with various parameters, such as surface tension, viscosity, coating time, temperature and rotation speed, etc. And the optimal shape of the rim was tried to get by 3 dimensional computer simulation of the polymer expulsion process.

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