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느타리 신품종 ‘만선’의 균사배양 및 자실체 생육 특성
이채영,최종인,김정한,김연진,최준영,이찬중,임갑준 한국버섯학회 2023 한국버섯학회지 Vol.21 No.2
The oyster mushroom is a widely cultivated edible mushroom in Korea. It is a regionally specialized crop in Gyeonggi-do, where 68% of the national production is produced. The present study was conducted to develop a new, highquality cultivar with stable cultivation. ‘Manseon’ is a new variety of oyster mushroom suitable for bottle culture. It was produced by mating monokaryons isolated from ‘HB-18’ and ‘P15159-16’. The optimal temperature for ‘Manseon’ mycelial growth was 26–29 °C on potato dextrose agar (PDA) medium and for primordia formation and the growth of fruit bodies the optimal temperature was 18–19 °C on sawdust medium. Spawn running required 30 d, primordia formation required 4 d, and fruit body growth in the bottle culture required 4 d. Regarding the characteristics of the fruit bodies, the pilei were round and dark grayish brown, stipe color was white, and stipe shape was short and thick. The yield per bottle was 192.7 g/1,100 cc, which was 9% higher than that of the control strain (Suhan-1ho). The physical properties of springiness, cohesiveness, gumminess, and brittleness of stipe tissue were 87.9%, 77.4%, 445.1 kgf, and 389.6 kgf, respectively.
전기부상과 혐기성 수소 발효 공정의 결합을 통한 미세조류 제거 및 에너지 생산
이채영,나동채,최재민,강두선 유기성자원학회 2012 유기물자원화 Vol.20 No.3
부영양화로 인한 조류의 과도한 번식은 하천과 호수의 수질에 심각한 문제를 야기하고 있다. 따라서 하천과 호수의 수질 오염 방지를 위해서는 물리화학적 또는 생물학적 처리를 통해 효과적인 조류 제거가 필요하다. 본 연구에서는 전기부상과 혐기성 수소 발효 공정의 연계를 통해 효과적인 조류 제거와 에너지를 생산하고자 하였다. Chlorophyll a를 기준으로 전기부상에 의한 조류 제거효율은 전류 증가에 따라 증가하였으며 최대 95.9%로 나타났다. 제거된 조류로부터 에너지를 회수하기 위하여 혐기성 수소 발효 타당성을 조사하였다. 조류와 초음파로 전처리를 수행한 조류의 최종 수소 수율은 각각 17.3 및 61.1 ml H2/g dcw(dry cell weight)로 나타났다. 조류의 초음파 전처리는 가수분해 속도를 증가시켜 최대 수소 수율을 3.4배 향상시키는 것으로 나타났다. The algal bloom, resulting from eutrophication, has caused serious water quality problems in river and lake. Therefore, it has to be removed by any means including physicochemical or biological treatment for preserving water quality. This study was conducted to investigate the microalgae removal and energy production using combined electro-flotation and anaerobic hydrogen fermentation processes. The result showed that algae removal efficiency based on chlorophyll a removal increased with the current. At a current of 0.6A, the maximum microalgae removal efficiency of 95.9% was achieved. The treatability of anaerobic hydrogen fermentation was investigated to recover energy from microalgae removed by electro-flotation. The ultimate hydrogen yields of algae before and after ultrasonic pretreatment were 17.3 and 61.1 ml H2/g dcw(dry cell weight), respectively. The ultrasonic pretreatment of algae led to 3.4-fold higher H2 production due to the increase of hydrolysis rate.
AN EFFICIENT AND ROBUST NUMERICAL METHOD FOR OPTION PRICES IN A TWO-ASSET JUMP-DIFFUSION MODEL
이채영,Jian Wang,장한별,한현수,이성진,이원진,양기성,김준석 한국수학교육학회 2020 純粹 및 應用數學 Vol.27 No.4
We present an efficient and robust finite difference method for a two- asset jump diffusion model, which is a partial integro-differential equation (PIDE). To speed up a computational time, we compute a matrix so that we can calculate the non-local integral term fast by a simple matrix-vector operation. In addition, we use bilinear interpolation to solve integral term of PIDE. We can obtain more stable value by using the payoff-consistent extrapolation. We provide numerical experiments to demonstrate a performance of the proposed numerical method. The numerical results show the robustness and accuracy of the proposed method.
이채영,박인근 유기성자원학회 2010 유기물자원화 Vol.18 No.1
Characteristic of hydrogen production was investigated to find the optimum heat pretreatmentconditions for the anaerobic fermentation of food waste. The heat pretreatment of food wasteenhanced the hydrogen yield due to the increase of soluble chemical oxygen demand (SCOD) andcarbohydrate content. This result revealed that the maximum degrees of disintegration of SCODand carbohydrate content were 55.1% and 223.6%, respectively. On the other hand, theimprovement of hydrogen yield was insignificantly affected by heating reaction time at longerthan 20 min; the increase of hydrogen yield was only about 7% between 20min and 1 hour.Therefore, the increase of reaction time more than 20min was not necessary. 음식폐기물의혐기성발효시열적전처리의최적조건을도출하기위하여수소발생특성을평가하였다.음식폐기물의열적전처리의경우용해성화학적산소요구량(SCOD)과탄수화물함량을증가시켜수소수율을향상시키는것으로나타났다. 실험결과SCOD와탄수화물을기준으로한최대가용화효율은각각55.1%와223.6%로나타났다. 반응시간에따라전처리효과는증가하는경향을보였으나20분간1시간비교시약7%의차이를보여20분이상의반응시간의증가는크지않은것으로나타났다.
하수슬러지의 초음파 전처리를 통한 가용화 및 혐기성 생분해도 향상
이채영,박승용 유기성자원학회 2008 유기물자원화 Vol.16 No.3
The ultrasonic pre-treatment of sewage sludge (SS) was investigated to increase soluble organic material and to improve anaerobic biodegradability. Ultrasonic disintegration of SS increased the amount of soluble chemical oxygen demand (SCOD), protein and carbohydrate concentrations whereas particle size decreased due to the break-up of cell walls. In terms of anaerobic biodegradability, ultrasonic pre-treatment enhanced the anaerobic biodegradation of SS, leading to the methane gas production improvement. Biochemical methane potential (BMP) of SS was 211.3 ml CH4/gVS whereas BMP after ultrasonic pre-treatment was 294.3 ml CH4/gVS. The improvement in BMP for SS treated with ultrasonic disintegration was as high as 40 %. This result indicated that disintegration of SS was efficient for enhancing anaerobic biodegradability.
The Dopamine D4 Receptor Polymorphism Affects the Canine Fearfulness
이채영,신수안,신대성,강주현,박찬규,김장훈 한국통합생물학회 2008 Animal cells and systems Vol.12 No.2
The canine fearfulness is a behavioral trait knowneffects of the dopamine D4 receptor polymorphism on thisbehavior by postulating a mixed model of inheritance.Genotyping for the three diferent repeat polymorphismfound in the third exon of the receptor gene was carried outfor the population of the Korean native dogs. Four hundredfifty eight dogs with known pedigree were genotyped, and264 individuals were tested for their fear responses to anexperimenter, in which four diferent behavioral paradigmswere adopted. Since the results assessed by principal factoranalysis revealed a major factor explaining 69% of the totalphenotypic variance, the subsequent analyses were conductedfor this quantity. Analyses of the factor scores by estimatingtheir posterior means indicated that there is a fixed effectexerted by the three diferent repeat polymorphism found inthe D4 receptor as well as sex, in addition to unidentifiedpolygenic effects. The phenotypic contribution of the D4genotype was roughly estimated to be about 2%, which is afraction of the total genetic effects responsible for more than20% of the total phenotypic variance.
이채영,이영규,최규원,이채욱,김기호,김영훈 대한피부과학회 2008 Annals of Dermatology Vol.20 No.3
The nasal ala is a challenging area for surgical reconstruction, with thick sebaceous skin, the lack of an ample tissue reservoir, and an adjacent free margin. Numerous flaps have been reported for the repair of alae defects. A 71-year-old woman with simultaneous basal cell carcinomas involving both nasal alae was treated by Mohs micrographic surgery. The surgical defects measured 1.5×1.5 cm on the center of the right nasal ala and 1.0×1.0 cm on the left nasal ala, including the alar crease and rim. The right nasal ala was used as a nasolabial transposition flap and the left nasal ala was reconstructed by an island pedicle flap. The final shape and texture were satisfactory. The flaps survived and nasal symmetry was preserved. Combined nasolabial transposition and island pedicle flaps thus offer a superior esthetic and functional result owing to minimized tension. This may be a valuable reconstructive option in the repair of bilateral nasal alae defects. (Ann Dermatol (Seoul) 20(3) 142∼145, 2008) The nasal ala is a challenging area for surgical reconstruction, with thick sebaceous skin, the lack of an ample tissue reservoir, and an adjacent free margin. Numerous flaps have been reported for the repair of alae defects. A 71-year-old woman with simultaneous basal cell carcinomas involving both nasal alae was treated by Mohs micrographic surgery. The surgical defects measured 1.5×1.5 cm on the center of the right nasal ala and 1.0×1.0 cm on the left nasal ala, including the alar crease and rim. The right nasal ala was used as a nasolabial transposition flap and the left nasal ala was reconstructed by an island pedicle flap. The final shape and texture were satisfactory. The flaps survived and nasal symmetry was preserved. Combined nasolabial transposition and island pedicle flaps thus offer a superior esthetic and functional result owing to minimized tension. This may be a valuable reconstructive option in the repair of bilateral nasal alae defects. (Ann Dermatol (Seoul) 20(3) 142∼145, 2008)
브루탈리즘 표현특성을 반영한 패션 텍스타일 디자인 개발
이채영 한국기초조형학회 2022 기초조형학연구 Vol.23 No.6
브루탈리즘은 모더니즘 건축의 뒤를 이어 모든 장식을 버리고 투박하고 단순한 콘크리트를 활용하는것이 특징적인 건축양식으로 1950년대부터 1970년대까지 성행하였다가 최근 재조명 되고 있다. 본연구의 목적은 브루탈리즘 건축양식의 개념 및 표현특성을 고찰하고, 이를 반영한 패션텍스타일 디자인을 개발하여 기존의 텍스타일 디자인과 차별화 될 수 있는 텍스타일 디자인을 제시하는 것이다. 연구방법은 문헌연구 및 사례분석을 통해 브루탈리즘의 표현특성을 고찰하고, 이를 바탕으로 3가지 컨셉을 기획하여 패션 텍스타일을 전개하는 것이다. 사례분석 결과, 브루탈리즘 건축양식은 마감되지 않은 이미지의 콘크리트를 주재료로 활용하는 방법을 통해 ‘재료의 순수성’을 표현했으며, 재료 본연의색과 거칠고 투박한 질감, 압도적인 스케일과 형을 통해 ‘감각적 야수성’을 표현하는 특징이 나타났다. 더불어, 작은 요소들이 정형 또는 비정형으로 반복되는 ‘형태의 반복성’, 서로 다른 건물 또는 작은 모듈간의 연결을 통한 ‘구조적 상호의존성’ 특징을 도출하였다. 이러한 브루탈리즘 건축양식의 표현 특성을 반영하여 기획한 텍스타일 디자인 작품 ‘브루탈 기하학의 미학’은 반복되는 직선의 형태를 기하학의 형태로 연결하고 다이아몬드 리핏으로 구성하였다. ‘브루탈 위장의 미학’은 콘크리트 벽면의 독특한 질감을 텍스타일에 디자인에 적용하고자 하였으며, 이를 위해 건축물의 형태를 스트라이프 형태로 배치하고, 콘크리트 질감 맵핑 및 그림자 효과를 적용하였다. ‘브루탈 구조의 미학’은 건물 외벽으로 노출된 계단 및 기둥을 반복하여 배치하고 이동 및 회전, 중첩을 통해 브루탈리즘 건축의 독특한표현특성을 반영하여 디자인하였다. 본 연구는 건축 양식과 텍스타일의 융합에 기반을 두어 텍스타일디자인을 기획하고 독특한 조형의 텍스타일 디자인을 제시하여 그 가능성을 확인함과 동시에 텍스타일 디자인 발상 교육을 위한 기초자료로 활용될 수 있다는데 학술적 의미가 있다.