百濟瓦博士考

李다운 호남고고학회 2004 湖南考古學報 Vol.20 No.-

본고는 일본 飛鳥寺 創建瓦를 생산한 백제 瓦工과 造瓦技術의 전파·전개과정에 나타나는 역사적 배경을 검토해 봄으로서 이와 관련된 한일고대사의 한 측면을 복원하는 것을 목적으로 한다. 일본의 기와생산은 飛鳥寺 창건(588)을 위해 백제에서 파견된 瓦工과 이들에 의해 편성된 星組와 花組라는 두 造瓦集團에 의해 처음으로 성립되었으며 제작기법 의 비교 검토를 통하여 星組가 花組보다 먼저 형성되었음을 알 수 있다. 星組는 舊衛里遣蹟, 花組는 龍井里寺址 上層金堂址의 기와를 주로 생산한 瓦工에서 그 계통을 찾아 볼 수 있다. 백제 瓦工이 두 차례나 일본에 파견된 것은 577년에 파견된 造寺工· 造佛工의 관여에 의해 급진적으로 이루어진 飛鳥寺 造營工事에 필요한 기와를 조속히 생산하기 위한 것과 이후 계획적으로 이어지는 또 다른 사원조영에 필요한 기와를 생산하기 위한 것으로 추측된다 그리고 飛鳥寺 창건을 서두르게 된 배경 에 대해서는 불교라는 강한 정치 이념을 필요로 한 시대적 상황과 이 에 주도적 역할을 담당하려고 한 蘇我馬子의 정치적 의도를 추정할 수 있다. 현재까지 일본 初期寺院의 기와생산에 새로운 와공의 관여는 확인할 수 없고 星組와 花組의 계통을 이어받은 造瓦集團과 그 交錯으로 새롭게 형성된 造瓦集團만을 확인할 수 있을 뿐이다. 그 이유로 飛鳥時代 기와생산은 백제로부터 두 차례에 걸쳐 파견된 瓦工에 의해 성립된 후, 造瓦集團에 須惠器工人을 새로운 구성원으로 편입시킴과 동시 에 그 생산체제를 이용함으로서 증가하는 기와의 수요에 대응한 것으로 판단된다. In this study, by examining craftsmen of roof tiles of Paekche, who had produced roof tiles of the Asukadera in Japan, and an historical background exhibited in the process of diffusion/development of their production techniques, we investigated to reconstruct one side view of ancient history of Korea and Japan associated with that. Roof tiles production of Japan was initially started by both craftsmen of roof tiles dispatched in Paekche and their two groups (i.e., Sung)o(Hosikumi) and Hwajo(Hanakumi)) to establish the Asukadera; and we found that Sungjo(Hosikumi) had been formed earlier than Hwajo(Hanakumi), compared with their production techniques. Furthermore, we found a line of Sungjo(Hosikumi) in Gua-ri site, and a line of Hwajo(Hanakumi) in Yongjung-ri temple site. It is supposed that to dispatch craftsmen of roof tiles of Paekche to Japan was to produce the roof tiles which were needed for building of Asukadera performed rapidly by both Josagong, Jobulgong dispatched in 577 years; and was to continuously produce the roof tiles needed for building of another temple after that. We also supposed both the generational circumstances that needed the greatly political belief and Sokanoumako' s political intention, for the background establishing Asukadera hurriedly. It is not still identified to be associated with new craftsmen of roof tiles on roof tiles production of the early temples, whereas craftsmen group of roof tiles that succeeded to a line of both Sungjo(Hosikumi) and Hwajo(Hanakumi) and a new group due to their relationship are only identified. Hence, we considered that the Japanese might have added craftsmen of Sue ware to the craftsmen group, and then they would have supplied the demand of roof tiles by using its production system, after roof tiles production in the age of Asukadera was developed by craftsmen of roof tiles from Paekche.

소형주택 모델하우스에 나타난 주거용 빌트인 가구의 계획특성

김다영, 차승언, 김미경 충북대학교 생활과학연구소 2013 생활과학연구논총 Vol.17 No.2

The purpose of this study was to analyze the planning characteristics of built-in furniture in small-sized urban type housing. A case study was used to analyze and classify the functional and formal characteristics of built-in furniture applied in urban type housing of Seoul in the first half of 2012. Findings of the study were as follows: (1) The most important characteristic of built-in furniture was multi-functional aspect which was focused on the combination of furnitures. The second characteristic was formal aspect which was focused on the rapidity of installation and dismantling, and ease of movement. (2) Most of built-in furnitures had multi-functionality as functional aspect by combination of some furnitures including beds, chairs, tables and clothes dryers, electronic devices such as refrigerators and washing machines, and the other residential space elements such as stairs and partitions. (3) The flexibility as formal aspect of built-in furnitures was divided into folding/unfolding, opening/closing, and moving/separating. This study shows that the combination of multi-functionality and flexibility of the housing built-in furniture will be more ideal in small-sized housing planning rather than relying on just one type.

Reconsideration of Vigabatrin Effect in Infantile Spasms Treatment

Da Hye Yoon,Ja Un Moon,Joo Young Lee,In Goo Lee 대한소아신경학회 2019 대한소아신경학회지 Vol.27 No.2

Purpose: To investigate the effect of vigabatrin (VGB) as a therapeutic agent for patients with infantile spasms (IS), compare risk factors for treatment response, and review safety of VGB by assessing its side effects. Methods: Among 35 patients admitted to the Department of Pediatric Neurology, Seoul St. Mary s Hospital, College of Medicine, The Catholic University of Korea who received initial monotherapy with VGB under diagnosis of IS, 23 patients who met our inclusion criteria were enrolled and their medical records were retrospectively reviewed. Results: Of these 23 patients, average age at diagnosis was 7.26 ± 4.8 months and average age at spasms was 6.20 ± 3.8 months. Average treatment lag was 1.09 ± 1.8 months. Thirteen patients (56.5%) achieved seizure free status. There was no ophthalmic complication among patients. Remission of hypsarrhythmia at 3 and 6 months after treatment was a good prognostic factor (P=0.026 and P=0.004, respectively). Conclusion: VGB is effective enough to become a first-line drug for children with IS. Better prognosis can be expected in patients with clinical remission of hypsarrhythmia on electroencephalography after treatment initiation using VGB compared to those who do not have such remission. Regular eye examination and follow-up check-up are also needed in parallel with the use of VGB.

Cervical pessary for preterm twin pregnancy in women with a short cervix

( Da Un Jung ),( Min Jung Choi ),( Sun Young Jung ),( Suk Young Kim ) 대한산부인과학회 2020 Obstetrics & Gynecology Science Vol.63 No.3

Objective We aimed to evaluate the effectiveness of cervical pessary for extending twin pregnancy in women with a short cervix. Methods Between January 2014 and March 2019, the use of a cervical pessary for twin pregnancy in women with a cervical length of ≤15 mm was investigated between 16 and 28 weeks of gestation. We included women with a shortened cervix after a cerclage procedure and visible fetal membranes and cervical dilatation. Thirteen patients underwent pessary insertion and were matched with a control group of 15 patients. Pregnancy and neonatal outcomes were compared between the groups. We excluded women with major fetal anomalies discovered before or after birth and known placenta previa. Results Women who underwent pessary insertion were diagnosed with a short cervix (0.65±0.47 vs. 0.66±0.51 cm in the pessary and control groups, respectively; P=0.957) at a gestational age similar to that of the controls (23.29 vs. 25.14 weeks, P=0.294). There was no significant difference in gestational age at delivery between them (33.29 vs. 27.29 weeks in the pessary and control groups, respectively, P=0.058). The pessary group had a longer interval between the diagnosis and delivery than the control group (60.7±28.3 vs. 22.6±24.5 days, P=0.001). The number of adverse neonatal outcomes was significantly lower in the pessary group (n=7; 28.0%) than in the control group (n=14; 58.3%; P=0.032). Conclusion The use of a cervical pessary may prolong gestation in twin pregnancies in women with an extremely short cervix until viable gestational age.

Robust Fuzzy Output Feedback Control for Chaotic Systems with Time Delay

Da-un Jeong,Dongyeop Kang,Sangsu Yeh,Sangchul Won 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8

In this paper, a delay dependent robust fuzzy output feedback control is considered for time-delay chaotic systems with disturbances. Observer based controller is constructed by the T-S fuzzy model. The control algorithm is proposed to guarantee the H∞ performance of the time-delay chaotic systems. Linear matrix in equality(LMI) method is used to obtain controller and observer gains. To find the minimum attauation level, full positive symmetric matrices, P, R, S, T and U, are used. A numerical example is also presented to demonstrate the effectiveness of the proposed method.

Studies on the development of enzyme-linked immunosorbent assay (ELISA) for the determination of saikosaponin-a [Ⅰ]

Da Un Jeong,Chung Ki Sung 한국생약학회 1995 생약학회지 Vol.26 No.1

The Relationship between Antiviral Drugs for Chronic Hepatitis B and Diagnostic Markers

( Da Un Jeong ),( Sung Hee Hyun ),( In Sik Kim ) 대한임상검사과학회 2011 대한임상검사과학회지(KJCLS) Vol.43 No.2

In this study, we investigated the correlation between the administration of various antiviral agents and the alternation of specific biomarkers induced by the hepatitis B virus (HBV). Eligible subjects diagnosed with chronic hepatitis B were prescribed with antiviral drugs at the Gastroenterology Internal Medicine Department of E University Hospital in Daejeon between May 2004 and September 2009. Lamivudine was prescribed to 66 out of 100 patients. Of the 12 patients, 6 (50.0%) showed a change from being HBe-antigen-positive to being HBe-antigen-negative. Of the 39 patients, 23 (59.0%) showed higher than 40 IU/L alanine aminotransferase (ALT). Of the 65 patients, 41 (63.1%) showed HBV DNA decrease of 1 log, and were prescribed with Lamivudine. Adefovir was prescribed to 3 out of 100 patients. Of the 12 patients, 1 (8.3%) showed a change from being HBe-antigen-positive to being HBe-antigen-negative, and was prescribed with Adefovir. Entecavir was prescribed to 19 (19.0%) out of 100 patients. Of the 12 patients, 3 (25.0%) showed a change from being HBe-antigen-positive to being HBe-antigen-negative. Of the 12 patients, 3 (125.8%) showed higher than 40 IU/L ALT. Of the 65 patients, 14 (21.5%) showed HBV DNA decrease of 1 log, and were prescribed with Entecavir. Clavudine was prescribed to 7 out of 100 patients. Of the 12 patients, 1 (8.3%) showed a change from positive HBe antigen to negative HBe antigen. Of the 39 patients, 5 (12.8%) showed higher than 40 IU/L ALT. Of the 65 patients, 6 (9.2%) showed HBV decrease of 1 log, and were prescribed with Clavudine. These results do not show a statistically significant correlation between drugs and biomarkers. Data on combination therapy using Lamivudine and Adefovir show no statistically significant difference between drugs and biomarkers. Medications for periodic inspection was not correlated to HBe-antigen-negative conversion, ALT, and HBV DNA. HBV DNA was significantly reduced in patients with high levels of AST(aspartic acid aminotransferase) and ALT before treatment. In addition, the decrease of HBV DNA after 12 months of treatment was less frequently observed in patients treated with Lamivudine compared with other drugs. This result is associated with Lamivudine resistance. Although the association of drugs with diagnostic markers and the correct choice of treatment is difficult to determine, these results may be useful for further research on diagnosis and treatment of the hepatitis B virus.

Effects of TiN Coating on the Fatigue Fracture of Dental Implant System with Various Cyclic Loads

Da-Un Jung,Chae-Heon Chung,Mee-Kyoung Son,Han-Cheol Choe 한국표면공학회 2015 한국표면공학회지 Vol.48 No.6

The purpose of this study was to investigate effects of TiN coating on the fatigue fracture of dental implant system with various cyclic loads. TiN coated abutment screw, the fixture, and abutment of internal hex type were prepared for fatigue test. The fatigue test was carried out according to ISO 14801:2003(E) using tensile and compression tester with repeated load from 30% to 80% of static fracture force. Morphology and fractured surface was observed by field emission scanning electron microscope(FE-SEM) and energy dispersive Xray spectroscope(EDS). The fracture cycle drastically decreased as repeated load increased. Especially, in the case of TiN-coated abutment screw, fracture cycle increased compared to non-coated abutment screw. The fatigue crack was propagated fast as repeated load increased. The plastic deformation region decreased, whereas, cleavage fracture region increased as repeated load increased.

Antimicrobial Activity of Cross-linked Poly (vinyl alcohol) Nanofibers Incorporating Mussel Protein

Da-un Lim,Yumi Ha,Yoong Ahm Kim,Yong Chae Jung 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

Immunomodulatory effects of stem cell application in equine musculoskeletal disorders

Da-Un Jeong,Jeong Su Byeon,Jienny Lee,Mi Jeong Park,Na-Yeon Gu,In-Soo Cho,Sang-Ho Cha 한국예방수의학회 2018 예방수의학회지 Vol.42 No.1

Musculoskeletal disorders including fracture, tendonitis, osteoarthritis, and laminitis are common diseases in racehorses that can cause large economic losses in the racehorse industry. Mesenchymal stem cells (MSCs) are being applied as new clinical tools for treatment of musculoskeletal disorders of racehorses. To investigate the immunomodulatory effects of stem cell therapy, we analyzed the anti- and pro-inflammatory factors in peripheral blood mononuclear cells of racehorses before and after stem cell application using quantitative real-time RT-PCR. The expression levels of pro-inflammatory factors (CCL5, IFN-γ, IL-2, and IL-18) were decreased while those of anti-inflammatory factors (TIMP-1, IL-10, TGF-β1, and VEGF) were increased significantly after application of equine adipose tissue-derived MSCs (eAD-MSCs) to racehorses with fracture. Moreover, the expression levels of pro-inflammatory factors (IL-2, IL-18, and TNF-α) were decreased while those of anti-inflammatory factors (TIMP-1, TIMP-2, IL-10, TGF-β1, and VEGF) increased significantly after stem cell application of eAD-MSCs in racehorses with tendonitis. After evaluating immunomodulatory effects of stem cell therapy on equine musculoskeletal disorders such as fracture and tendonitis, our results showed that expression levels of pro-inflammatory factors were decreased, while those of anti-inflammatory factors increased significantly after stem cell application of eAD-MSCs. These findings suggest that the healing effects of the stem cell therapy might be due to its modulation of inflammatory factors.