Liquid‐Crystalline Blue Phase Laser with Widely Tunable Wavelength (Adv. Mater. 21/2013)

Hur, Sung‐,Taek,Lee, Bo Ram,Gim, Min‐,Jun,Park, Kyung‐,Won,Song, Myoung Hoon,Choi, Suk‐,Won WILEY‐VCH Verlag 2013 ADVANCED MATERIALS Vol.25 No.21

<P>A liquid‐crystalline blue‐phase laser with a tunable photonic bandgap (PBG) of over 150 nm and a wide temperature range is demonstrated by Myoung Hoon Song and Suk‐Won Choi on p. 3002. A lasing peak shift of more than 100 nm is realized due to the large PBG shift of the liquid‐crystalline blue phase. The shift in the lasing wavelength was reversible during repeated temperature changes over the entire stability range of the liquid‐crystalline cubic blue phase. </P>

Plenary Session 2 : PS-2-1 ; Outcomes of hepatitis B virus recurrence after liver transplantation: a multicenter analysis in Korea

( Hee Yeon Kim ),( Jong Young Choi ),( Dong Goo Kim ),( Myoung Soo Kim ),( Soon Il Kim ),( Shin Hwang ),( Sung Gyu Lee ),( Kwang Woong Lee ),( Kyung Suk Suh ),( Young Seok Han ),( Dong Lak Choi ),( Se 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-

Background: The outcome of hepatitis B virus (HBV) infection after liver transplantation (LT) was improved by hepatitis B immunoglobulin (HBIG) and nucles(t)ide analogue (NUA). However, HBV recurrence after LT is critical because the recurrence is occasionally accompanied by a progressive destruction of graft and poor survival. The aims of this study were to investigate the significance HBV recurrence and identity factors associated with HBV recurrence. Methods: From October 1999 to February 2011, a total of 2684 consecutive LT recipients who underwent HBV-associated LT were retrospectively enrolled from 7 transplantation centers in Korea. Results: Prophylaxis regimens were HBIG monotherapy (67.7%) or a combination of HBIG with NUA (22.3%). The recurrence rate of HBV was 6.1% (164 recipients) during mean follow-up duration of 10.9 years. The median time from transplantation to recurrence was 2.1 years (0.1-7.9 years). Of the 1,071 patients with hepatocellular carcinoma (HCC) prior to LT, 155 patients (14.5%) had HCC recurrence after transplantation, and 48 patients (31.0%) had HBV recurrence. Of the 48 patients with recurrence of both HBV and HCC, 25 patients (52.1%) experienced HBV recurrence after HCC recurrence. In the multivariate analysis, pretransplant HCC, pretransplant HBV DNA above 5.5 log copies/mL was independent clinical factors influencing HBV recurrence after LT. The mortality rate among the recipients with HBV recurrence was 34.1% (56 recipients). Mean overall survival was 6.4 years in the HBV-recurrence group and 9.9 years in the HBV-nonrecurrence group (p<0.001). HBV recurrence was not an independent prognostic factor for overall survival. HCC recurrence was the most important factor for overall survival. Conclusions: The overall outcome of LT in HBV-related liver disease was excellent with the current prophylaxis regimen Choon Hyuck David Kwon,8 Suk-Koo Lee8 Pretransplant HBV DNA and HCC were important factors for HBV recurrence. HBV recurrence after LT did not significantly influence on the overall survival without combining of HCC recurrence.

Ehlers - Danlos 증후군

주용진,최성문,최영자,성호석 ( Yoing Jin Joo,Sung Moon Choi,Young Ja Choi,Ho Suk Sung ) 대한피부과학회 1990 대한피부과학회지 Vol.28 No.5

A Case of Ehlers-Danlos syndrome Yoing Jin Joo, M.D., Sung Moon Choi, M.D., Young Ja Choi*, M.D., Ho Suk Sung, M.D. Department of Dermatology, Clooego of Medicine, Inje University, Pusan, Korea We presented a case of Ehlers-Danlos syndrome in a 25-year old female, who had hyperextensibility of skin, skin fragility, cigarette paper-like atrophic scar, joint hyperextensibility and skeletal abnormality of scoliosis since birth. There was no family history. Microscopic and electron microscopic examinations of the skin biopsy specimens from normal appearing skin on the forearm and the site of subcutaneous nodule was compatible with finding of Ehlers-Danlos syndrome. Although the manifestations of this case including marked extensibility of skin, joint, skin fraility and atrophic scar might be in accord with type Ⅰ(gravis) Ehlers-Danlos syndrome, skeletal abnormality of scoliosis did not correspond to this type, but to type Ⅳ(hydroxylysine deficient) Ehlers-Danlos syndrome. We consider this case as a type Ⅳ Ehlers-Danlos syndrome.

실용음악 전공 학생들의 발성치료 전후 성대 및 음성 특성 비교

황연신,심미란,김철준,최용석,김상연,최찬호,선동일,Hwang, Yeon Shin,Shim, Mi Ran,Kim, Chul Jun,Choi, Yong Suk,Kim, Sang Yeon,Choi, Chan Ho,Sun, Dong Il 대한후두음성언어의학회 2016 대한후두음성언어의학회지 Vol.27 No.2

Background and Objectives : Many students major in applied music singing have various difficulties in phonation when they sing or perform. But the studies about this cause are lack. The purpose of this study is whether singing voice therapy based on vocal music is effective or not to applied music singing students that have difficulties in phonation. Materials and Methods : Singing voice therapy program had been done to 8 students major in applied music singing during 7 weeks. We did laryngeal stroboscope, perceptual, acoustic and aerodynamic examination before and after singing voice therapy to this students. And we studied post examination results have differences or improvements compared to pre examination results. Results : Four male students don't have effective improvement after singing voice therapy but they shows slight improvement in aerodynamic examination values compared to pre examination values. Four female students shows improvement in aerodynamic examination values and pitch range increasing. Above all, one student's vocal nodules disappeared after singing voice therapy. Conclusion : Singing voice therapy based on music singing is very effective to the students major in applied music singing. Above all, their curriculum in applied music singing should include phonation training based on music singing before training perform and technic practices.

Myriocin induces apoptotic lung cancer cell death via activation of DR4 pathway

Choi, Kyung Eun,Jung, Young Suk,Kim, Dea Hwan,Song, Ju Kyung,Kim, Ji Young,Jung, Yu Yeon,Eum, So Young,Kim, Joo Hwan,Yoon, Na Young,Yoo, Hwan Soo,Han, Sang-Bae,Hong, Jin Tae 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.4

It has been known that myriocin inhibits melanoma growth. However, the effects and action mechanisms of myriocin on lung cancer cell growth have not been reported. In this study, we examined whether myriocin isolated from Mycelia sterilia inhibits cell growth of lung cancer cells (A549 and NCI-H460) as well as possible signaling pathways involved in cell growth inhibition. Different concentrations of myriocin inhibited the growth of lung cancer cells through the induction of apoptotic cell death. Consistent with cancer cell growth inhibition, myriocin induced the expression of death receptors (DRs) as well as p-JNK and p-p38 in both cell lines. Moreover, the combination of myriocin with DR4 ligand TRAIL, and other well known anti-tumor drugs (docetaxel and cisplatin) synergistically inhibited cancer cell growth, and induced DR4 expression. These results showed that myriocin inhibits lung cancer cells growth through apoptosis via the activation of DR4 pathways, and enhanced anticancer effects with well known drugs. Thus, our study indicates that myriocin could be effective for lung cancer cells as an anti-cancer drug and/or a conjunction agent with well known anti-cancers.

한국 현대시의 리듬 이론 연구: 역사와 현황 (3) -1930년에서 해방 전까지-

조재룡 고려대학교 한국언어문화학술확산연구소 2022 Journal of Korean Culture Vol.59 No.-

Rhythm studies conducted after 1930 began by investigating the characteristics of the Korean language. Cho Yoon-jae suggested that Joseon dynasty's poetry, unlike Western and Chinese poetry, not only lacks ‘accent’ and ‘pitch’, but also cannot operate ‘rhyme'. He defined ‘rhythm’ as ‘rhyming beauty’ induced by ‘circulation of emotions’. Along with rhythm, a new approach came to the fore that rhythm in Joseon dynasty’s poetry is in fact based on the number of syllables. Cho Byeok-Am, while criticizing Kim Ok for his concept of rhythm based on fixed verse, emphasizes the inseparability of poetic content and form. Free verse, formed on internal rhythm instead of external and formal meter, is a new form of poetry free from metrical constraints, yet to be identified. Rhythm began to be discussed to search for ‘poetic form' along with the advent of free verse. However, the dichotomy between ‘intrinsic, content meter’ and ‘external, formal meter’ forbids it to proceed as in previous generations. Kim Ki-Rim attempted to extricate rhythm from fixed meter in traditional poetry. Instead of abandoning the mechanical and formulaic rhythm, he explored new types of rhythm: intonation, tone, accent, and tempo. According to Kim Ki-Rim, rhythm is what gives words meaning, voice, and expression. Questioning rhythm and context makes words and phrases understood in a given discourse. Yun Kon-Gang defines rhythm as a collection of accents, whose effect is close to ‘zero’ in poetry, thus worthless. In his studies, rhythm is considered as a product of typification or an immobile decoration, while ‘tone’ is perceived as a dynamic, living form of language. However, the modality of tone was not elucidated. 1930년 이후 진행된 리듬 연구는 조선어의 특성을 규명하는 일에서 착수되었다. 조윤제는 서양의 영시나 동양의 중국시가 아니라 일본어와 유사한 조선어에 ‘악센트’와 ‘고저’가 부재할 뿐 아니라 ‘운韻’을 운용하는 게 불가능하다고 주장한다. ‘감정의 유통’에 따른 ‘자연스러운 율미(律美)를 리듬(Rhythm)이라고 정의한다. 조선시의 ‘운율’은 ‘자수율’이라는 인식이 ‘리듬’과 함께 대두된다. 조벽암은 김억의 ‘정형시론’에 근저한 리듬 개념을 비판하면서 시의 내용과 형식의 불가분성을 강조한다. 외면적ㆍ형식적인 운율법 대신 ‘내재율의 리듬’에 토대한 자유시형은 일정한 박자와 율격의 구속을 벗어난 새로운 시형이지만 그 실체가 규명되지 않는다. 자유시형의 출현과 더불어 ‘시형’의 모색에서 본격적으로 논의되기 시작한 리듬은 앞선 세대와 마찬가지로 ‘내재율-내용율’ vs ‘외재율-형식율’의 이분법에 갇혀 전진하지 못한다. 김기림은 전통시의 정형률에서 리듬을 탈출시키려 시도한다. 김기림은 기계적이고 도식적인 의미의 리듬을 폐기하는 대신, 새로운 리듬을 탐구하였다. 그에게 리듬은 억양이나 어조, 액센트나 템포 등의 운용이며, 리듬은 말에 ‘뜻’을 입히고 목소리와 표정을 부여한다. 리듬과 문맥을 따져 물을 때 비로소 낱말이나 구절은 언술 속에서 비로소 제 의미를 이해할 수 있다. 윤곤강은 리듬을 단순한 악센트의 집합으로 정의하며, 그 효과는 시에서 ‘제로’에 가까워, 시에서는 ‘무가치한 무엇’이라는 결론을 내린다. 윤곤강에게 리듬은 ‘유형화’의 산물이며, 정형율과 다르지 않은 굳어진 장식인 반면, 톤은 말의 생동하는 동적 형태로 인식된다. 그러나 톤의 양태는 규명되지 않는다.

Heat Transfer Characteristics of an Annular Fluidized-Bed Reactor for the Recycling of Heat from Solid Waste

Sung Mo Son,Uk Young Kim,Ik Sang Shin,Yong Kang,Suk Hwan Kang,Myoung Jae Choi 한국폐기물자원순환학회 2007 한국폐기물자원순환학회 학술대회 Vol.2007 No.1

Luminescence study of Si- and Ge- implanted (1102) sapphires

Sung KIM,Suk-Ho CHOI,C. J PARK,H. Y CHO,R.G. ELLIMAN 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.3

Implantation with 30 keV Siက or Geက and subsequent annealing at 1100 C create nanocrystalline Si or Ge (nc-Si or nc-Ge) in host materials such as (1102) sapphire and fused silica. Photoluminescence (PL) and cathodluminescence (CL) have been used to investigate luminescence properties of nc-Si or nc-Ge embedded in the host materials. Light emissions from Siက- or Geက- implanted samples are compared with those from Oက- and Alက- implanted ones in order to investigate whether they are from nc-Si (or nc-Ge) or defect-related. The CL band at 574 nm and the PL band at 1380 nm are interpreted as Si- and Ge-nanocrystal-related, respectively, and the CL bands at 328 and 411 nm as defect-related. Especially, the 411-nm band is found after annealing as well as before annealing and sharply increases on increasing the implant dose. This indicates that even high-temperature annealing cannot completely rule out implantation-induced defect luminescence.

Application of In Situ Measurement for Site Remediation and Final Status Survey of Decommissioning KRR Site

Sang Bum Hong,Jong Soo Nam,Yong Suk Choi,Bum Kyoung Seo,Jei Kwon Moon 대한방사선방어학회 2016 방사선방어학회지 Vol.41 No.2

Effects of Reed (Phragmites communis) on Growth Performance, Carcass Characteristics, and Meat Quality in Hanwoo Steers

Sang Min Lee(이상민),Sun Sik Chang(장선식),Ki Yong Chung(정기영),Hyeong Cheol Kim(김형철),Sun Ho Choi(최순호),Ha Yeon Jeong(정하연),Boh Suk Yang(양보석),Sung Sill Lee(이성실),Young Moo Cho(조영무) 한국생명과학회 2012 생명과학회지 Vol.22 No.10

본 연구는 한우 거세우의 비육시 급여 조사료의 종류가 발육 및 도체특성에 미치는 영향을 구명하고자 수행하였다. 한우 거세우 21두를 3처리(건초, 갈대 및 갈대+볏짚), 처리당 7두씩 완전 임의 배치하였다. 시험결과 개시체 중 및 종료체중은 처리구별(대조, T1 및 T2)로 각각 125.5, 128.3 및 128.3 kg과 697.4, 614.6 및 706.7 kg으로 나타났다. 일당증체량은 대조구(0.70 kg/d)와 T2 처리구(0.71 kg/d)가 T1 처리구(0.60 kg/d)보다 향상된 경향을 나타났지만 유의적인 차이는 없었다. 건물섭취량은 유의적인 차이는 없었지만 T1 처리구가 다른 처리구에 비해 비교적 낮았다. 육량특성에서 도체중은 대조구와 T2처리구간에는 차이가 없었지만, T2처리구는T1 처리구에 비해 높았다(p<0.05). 등지방두께와 등심단면적은 대조구와 T2처리구가 T1처리구 보다 높았고, 육량등급(A:B:C, %)은 T1 처리구(43:57:0)가 다른 처리구(대조구 0:71:29, T2 29:42:29)에 비해 높았다. 육질특성에서는 지방색과 조직감은 처리구 간 유의적인 차이가 없었다. 그러나 육색과 성숙도는 T2 처리구에 비해 T1 처리구가 유의적으로 높았다 (p<0.05). 근내지방도 및 육질1등급이상 출현율은 T1처리구에 비해 대조구와 T2처리구가 높았다. 본 연구의 결과를 종합해 볼 때 거세한우 비육시 조사료로서 갈대와 볏짚을 혼합급여할 때 발육, 사료 이용성 및 도체 성적이 향상되어 갈대가 한우의 조사료원으로서 활용가치가 있는 것으로 판단되었다. This study investigated the effects of diet of different forages on growth performance and carcass characteristics of Hanwoo steers. Twenty-one Hanwoo steers were randomly allocated to three groups (fed hay, reed, and reed with rice straw) of seven steers each. Initial and final body weights of control, T1, and T2 groups were 125.5, 128.3, 128.3 kg and 697.4, 614.6, 706.7 kg, respectively. Average daily gain tended to increase in controls (0.70 kg/d) and the T2 group (0.71 kg/d) but not as much in the T1 group (0.60 kg/d); however, there was no significant difference. DMI was not significantly different among the treatment groups, but T1 was relatively lower than the other groups. For the yield traits, carcass weight was not significantly different between controls and the T2 group but was greater in the T2 group compared to the T1 group (p<0.05). Back fat thickness and rib eye area were higher in controls and T2 compared to T1; yield grade (A:B:C, %) was greater in T1 (43:57:0) compared to the other groups (control 0:71:29; T2 29:42:29). For the quality traits, fat color and texture were not significantly different among groups. However, meat color and maturity were significantly greater in T1 compared to T2 (p<0.05). Marbling score and appearance rate of over 1st meat quality grade were greater in the control and T2 groups compared to the T1 group. Based on the results, growth performance, feed utilization, and carcass traits appeared to improve when roughage containing rice straw plus reed was offered. Therefore, reed is worth considering as a roughage source for fattening Hanwoo steers.