Pollen Viability of Common Buckwheat (Fagopyrum esculentum Moench.) in in vitro Germination and its Application to Male Gametophyte Isolation

Woo, Sun-HeeㆍKeun-Yook ChungㆍHeung-Tae, KimㆍYong-Gu, ChoㆍHong-Sig, KimㆍBeom-Heon, Songㆍ Chul-Won, Lee and Seung-Keun Jong 忠北大學校 農業科學硏究所 2004 農業科學硏究 Vol.21 No.-

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석탄 가스화를 통한 전력 생산과 DME 병산 공정에 대한 기초 경제성 분석

유영돈 ( Young Don Yoo ),김수현 ( Su Hyun Kim ),조원준 ( Won Jun Cho ),모용기 ( Yong Gi Mo ),송용택 ( Tae Kyong Song ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.6

석탄가스화를 기반으로 한 발전(IGCC 발전) 및 화학원료 제조공정의 상업화 관건은 화석연료인 원유 또는 천연가스를 기반으로 생산되는 경우와 비교하여 경제성을 확보할 수 있는지 여부이다. 경제성 확보를 위한 가장 현실적인 방법으로는 석탄 가스화를 통해 얻어진 합성가스로부터 2개 이상의 생산물(예: 발전과 화학원료를 동시 생산)을 병산(coproduction또는 poly-generation)하는 것이다. 본 연구에서는 석탄 가스화를 기반으로 하여 발전과 수송용, 발전용 및 가정용 연료로 사용이 가능한 DME(dimethyl ether)를 병산하는 공정에 대한 경제성 분석을 실시하였다. 경제성 분석을 위한 병산 공정에서는 250 MW 전력생산 연간 30만 톤의 DMZ 생산을 기준으로 하였다. 병산 공정에서 DME 판매가격이 50만원/ton인 경우, 전기 생산원가는 34.8~58.4원/kWh으로 SMP(계통한계가격) 가중평균인 150.69원/kwh(2013년 1월~12월까지의 평균값)의 33~58% 수준으로 산정되었다. 따라서, DME 판매가격이 적정하게 유지될 경우 석탄IGCC+DME 병산공정은 IGCC 단독 발전과 비교하여 경제성을 확보할 수 있을 것으로 판단된다. 현재 중국에서 DME판매가격이 900,000원/톤 내외이므로, 전력과 DME를 병산할 경우, IGCC 단독으로 전력을 생산할 경우와 비교하여 전력 생산 원가를 월등하게 낮출 수 있음을 알 수 있다. 이와 같이 석탄 가스화를 기반으로 한 병산 공정을 통해 전력과 DME를 병산하는 시스템에서, 시장 여건에 따라 전력과 DME 생산비율 제어가 가능하고, 석탄 가스화기 및 정제 시스템을 공통 설비로 활용함으로써, 개별적으로 생산하는 것보다 생산 원가를 낮출 수 있다는 결과를 얻었다. The key for the commercial deployment of IGCC power plants or chemical (methanol, dimethyl ether, etc.) production plants based on coal gasification is their economic advantage over plants producing electricity or chemicals from crude oil or natural gas. The better economy of coal gasification based plants can be obtained by co-production of electricity and chemicals. In this study, we carried out the economic feasibility analysis on the process of co-producing electricity and DME (dimethyl ether) using coal gasification. The plant’s capacity was 250 MW electric and DME production of 300,000 ton per year. Assuming that the sales price of DME is 500,000 won/ton, the production cost of electricity is in the range of 33~58% of 150.69 won/kwh which is the average of SMP (system marginal price) in 2013, Korea. At present, the sales price of DME in China is approximately 900,000 won/ton. Therefore, there are more potential for lowering the price of co-produced electricity when comparing that from IGCC only. Since the co-production system can not only use the coal gasifier and the gas purification process as a common facility but also can control production rates of electricity and DME depending on the market demand, the production cost of electricity and DME can be significantly reduced compared to the process of producing electricity or DME separately.

In Vivo Response of Growth Plate to Biodegradable Mg-Ca-Zn Alloys Depending on the Surface Modification

Song, Mi Hyun,Yoo, Won Joon,Cho, Tae-Joon,Park, Yong Koo,Lee, Wang-Jae,Choi, In Ho MDPI AG 2019 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.20 No.15

<P>Because Mg-Ca-Zn alloys are biodegradable and obviate secondary implant removal, they are especially beneficial for pediatric patients. We examined the degradation performance of Mg-Ca-Zn alloys depending on the surface modification and investigated the in vivo effects on the growth plate in a skeletally immature rabbit model. Either plasma electrolyte oxidation (PEO)-coated (n = 18) or non-coated (n = 18) Mg-Ca-Zn alloy was inserted at the distal femoral physis. We measured the degradation performance and femoral segment lengths using micro-CT. In addition, we analyzed the histomorphometric and histopathologic characteristics of the growth plate. Although there were no acute, chronic inflammatory reactions in either group, they differed significantly in the tissue reactions to their degradation performance and physeal responses. Compared to non-coated alloys, PEO-coated alloys degraded significantly slowly with diminished hydrogen gas formation. Depending on the degradation rate, large bone bridge formation and premature physeal arrest occurred primarily in the non-coated group, whereas only a small-sized bone bridge formed in the PEO-coated group. This difference ultimately led to significant shortening of the femoral segment in the non-coated group. This study suggests that optimal degradation could be achieved with PEO-coated Mg-Ca-Zn alloys, making them promising and safe biodegradable materials with no growth plate damage.</P>

The Story of the Trinity according to Jürgen Moltmann

Yong Won Song(송용원) 연세대학교 신과대학(연합신학대학원) 2021 신학논단 Vol.106 No.-

본 논문은 오늘날 하나님의 인격과 활동에 관한 근본 질문을 탐구하는 이야기 신학이라는 관점에서 몰트만의 삼위일체 이야기가 지니는 신학적 함의를 보여주는 것을 목적으로 한다. 이를 위한 연구방법은 몰트만의 삼위일체 신학의 체계 전반을 ‘이야기’ 방식으로 재구성하는 가운데 고통과 자유의 이야기, 내재와 경륜의 상승과 하강의 이야기, 하나님 나라와 종말론적 삼위일체의 이야기라는 세 부분으로 직조된 주요한 신학 자리들(loci)을 차례로 분석하는 것이다. 이러한 분석을 통해 먼저, 삼위 하나님의 하나되심을 명확하게 설명할 수 있는 유일한 도구로 ‘개념’이 아니라 ‘이야기’가 제안되면서, 삼위 하나님의 자기계시 사건과 설명 또한 형이상학적 차원이 아니라 성서 안에 담긴 역사적 차원에서 일어난다는 주장에 적절성이 부여된다는 것을 알 수 있다. 나아가 ‘삼위일체 이야기’가 어떻게 하나님과 창조세계가 고통에서 자유로, 경륜에서 내재로, 현재에서 미래로 개방되어 가는지 교차 논증 방식이 지속적으로 채택된다. 그러한 가운데 몰트만은 삼위일체의 페리코레시스 유형으로 구성된 십자가 이야기를 기반으로 삼아 하나님과 인간의 고통과 자유를 수직과 수평 모든 차원에서 연결하면서 창조세계를 현재와 미래의 준-궁극 차원과 궁극 차원 모두에서의 회복으로 이끌고자 한다. 몰트만의 신학적 공헌은 현대 신학에서 이야기의 구조와 성격이 하나님의 삼위와 일치를 연결하는 데 매우 생산적이고 효과적이라는 사실을 설득력 있게 제안하는 가운데 삼위일체 신학을 이야기 신학의 중심으로 떠오르게 했다는 점에 있다. 또한, 이야기 유형이 고통과 자유, 관계와 사람, 시간과 영원, 사랑과 주권, 역사와 존재와 같이 하나의 통합된 방식으로 연결되고 수렴되기 쉽지 않은 여러 대립 개념들을 삼위일체 하나님과 창조세계 사이의 페리코레시스 이야기 방식으로 화해되고 종합될 수 있다는 것을 성경과 역사만 아니라 현대의 맥락까지 고려하며 적절히 논증한 점에 있다. 결론적으로 몰트만의 이야기 신학에서 다시 주목해야 할 지점은 삼위일체 하나님의 영광스러운 신적 삶에 초점을 두는 삼위간 교제에 내재된 일치가 삼위일체 양식으로 ‘살아가는’ 그리스도교 공동체가 지향하는 하나님 나라의 종말론적 비전 가운데 이루어가는 일치와 상호 순환 관계를 구축한다는 데 있다. 그의 통찰은 고립과 배제의 고통에 처한 인류 공동체의 회복을 지향하는 교회 공동체의 대안적 이야기 재구성에 유효한 신학적 패러다임을 이미 제시했다는 점에서 현재 상황에도 적절성이 있는 것으로 보인다. This article aims to show the theological implications of the story of the Trinity according to Jürgen Moltmann from the perspective of narrative theology which explores fundamental questions about God’s person and activity in modern day. The research method for this consists of three parts: (1) the story of suffering and freedom of the trinity, (2) the ascending and descending story between immanent and economic trinity, and (3) the story of the kingdom of God and the eschatological trinity. By reconstructing Moltmann’s trinitarian theology through a ‘story’ method, this article analyzes the major theological loci woven into one another. This analysis first suggests that a ‘story,’ not a ‘concept,’ is the only tool capable of clearly explaining the unity of the Triune God. In so doing, it is suggested that the self-revelation events and explanations of the Triune God were not on a metaphysical level but on a historical level contained in the Bible. Furthermore, a multifaceted argument method is adopted to see how the “Trinity Story” is open to God and the world from suffering to freedom, from economy to immanence, and from present to future. At the center of these thoughts, Moltmann connects God and human’s suffering and freedom in all dimensions vertically and horizontally, based on the story of the cross composed of the trinitarian perichoresis type. Hence, Moltmann’s idea makes it possible to lead the world to recovery at both quasi-ultimate and ultimate levels in the present and future. Moltmann’s theological contribution lies in the fact that the structure and character of narratives are effective in linking the three persons and unity of God, thereby bringing Trinitarian theology to the center of narrative theology in modern theology. In addition, the narrative type binds several confrontational concepts—such as suffering and freedom, relation and person, time and eternity, love and sovereignty, history and existence—and reconciles and synthesizes in the way of perichoresis story. In this regard, Moltmann contributes to this line of reasoning, taking into account not only the biblical and historical context, but also the contemporary context. In conclusion, Moltmann’s narrative theology emphasizes the unity inherent in the Triune fellowship, which focuses on the glorious divine life of the Triune God, and builds a reciprocal relationship with unity in the eschatological vision of the kingdom of God, which the Christian community living in the triune style aims to resemble. Moltmann’s insight is to some degree relevant to today’s society in its current form as he has presented a theological paradigm that is effective for the reconstruction of an alternative narrative of the ecclesial community that aims to restore the human community suffering from isolation and exclusion.

Development of Material Balance Evaluation Methodology Based on Measurement Uncertainty in GUM

Yong Suk Lee,Young Wook Chung,Young Beom Song,Jae Won Park,Dong-Min Kim,Mi Ri Park 한국방사성폐기물학회 2021 한국방사성폐기물학회 학술논문요약집 Vol.2021 No.11

Change in the Order of the Phase Transition in Triglycine Selenate Crystal

Song, Yong-Won The Korean Ceramic Society 2000 The Korean journal of ceramics Vol.6 No.1

The specific heat of a partly deuterated triglycine selenage (DTGSe) crystal under $\gamma$-irradiation was measured. It was shown that $\gamma$-irradiation defects changed the thermodynamic behavior of DTGSe crystal in a small dose region. The order of the phase transition changed from the first to the second at D=0.3 MR.

Characterization of the skin mycobiome in patients with atopic dermatitis

( Song Hee Han ),( Joo Ran Hong ),( Hye In Cheon ),( Min Seok Hur ),( Byung Gon Choi ),( Min Jung Kim ),( Hae Jeong Youn ),( Yang Won Lee ),( Yong Beom Choe ),( Kyu Joong Ahn ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2

Background: With the recent availability of culture-independent sequencing methods, studies have been conducted to analyze skin microorganisms present in patients with atopic dermatitis (AD). However, the database on the skin fungal communities, “mycobiome,” has been relatively restrictive compared with the bacterial world. Objectives: This study aimed to comparatively analyze the overall skin mycobiome between patients with AD and healthy individuals in the Korean population. Methods: Skin swab samples from the antecubital fossae of 8 patients with AD and 8 healthy controls were analyzed. Using sequencing method followed by direct DNA extraction and molecular PCR, taxonomic compositions of fungi at stepwise level ranks were analyzed. Results: The phylogenic marker used was internal transcribed spacer 2 regions of DNA. The tendency of higher intra- and inter-personal taxonomic diversity at genus and species levels in AD samples was observed. Non-Malassezia fungal diversity was also noticeable in the patient group compared with healthy controls. Malassezia globosa and Malassezia restricta were prevalent in all samples across both study groups, and some Malassezia species, including Malassezia sloofiae and dermatis characterized AD. Conclusion: This study might provide a new insight into the mycobiome of adult AD, which contributes to building a systemic mycobiome database in AD.

Vestibular Manifestations in Subjects With Enlarged Vestibular Aqueduct

Song, Jae-Jin,Hong, Sung Kwang,Lee, Sang Yeon,Park, Sung Joon,Kang, Seong Il,An, Yong-Hwi,Jang, Jeong Hun,Kim, Ji Soo,Koo, Ja-Won Lippincott Williams Wilkins 2018 Otology & Neurotology Vol.39 No.6

OBJECTIVE:: To describe the results of a thorough evaluation in a large series of patients with an enlarged vestibular aqueduct (EVA), focusing on vestibular manifestations with etiological considerations. STUDY DESIGN:: Retrospective chart review of patients with EVA. SETTING:: Tertiary referral center. PATIENTS:: A total of 22 EVA patients with a median age of 8 years (6 mo–35 yr) who underwent both audiovestibular and radiologic examinations. MAIN OUTCOME MEASURES:: Patient demographics, radiologic findings, audiologic results, vestibular symptoms, findings of neurotologic examinations, and laboratory evaluations were collected and analyzed. Standard descriptive statistics were used to summarize patient characteristics. Subjects who had a history of vertigo attack were categorized as “vestibulopathy group,” while subjects without any history of vertigo as “non-vestibulopathy group.” RESULTS:: Of the 41 ears included, 37 (90.2%) had hearing loss on initial audiometric evaluations. Among the 22 patients, 14 (63.6%) complained of dizziness. Of the 14 vertiginous patients, seven had recurrent episodes, five had a history of single attack, and two presented with postural imbalances. There were no significant differences between vestibulopathy and non-vestibulopathy groups with regard to the relationship between the development of vestibular symptoms and aqueductal size, hearing threshold, or age at first visit. Four of the 22 (18.2%) patients developed secondary benign paroxysmal positional vertigo (BPPV) and all patients complained of simultaneous decreases in hearing. CONCLUSIONS:: Our results demonstrate that patients may develop vestibular symptoms during their clinical course, and all patients with an enlarged vestibular aqueduct should be cautioned regarding the potential development of vestibular pathology. Moreover, the non-negligible incidence of secondary BPPV mandates positional tests when evaluating EVA patients with vertigo.

Development of 1GHz High Speed Sampler for KVN

Yong-Woo Kang,Min-Gyu Song,Do-Heung Je,Seog-Oh Wi,Do-Young Byun,Taehyun Jung,Chungsik Oh,Wook-Won Nam 한국천문학회 2014 天文學會報 Vol.39 No.2

Remote Diagnosis of Hypertension through HTML-based Backward Inference

Yong Uk Song,Young Moon Chae,Kyoung Won Cho,Seung Hee Ho 한국지능정보시스템학회 2001 한국지능정보시스템학회 기타 간행물 Vol.- No.-