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전상진,심상철,조찬식,김태정,갈영순,Jeon, Sang Jin,Sim, Sang Cheol,Jo, Chan Sik,Kim, Tae Jeong,Gal, Yeong Sun Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.10
Catalytic copolymerization of diethyl dipropargylmalonate (DEDPM) and phenylacetylene (PA) by Mo(CO)6 and (toluene) Mo(CO)3/chloranil has resulted in the expected copolymer consiting of a polyene backbone with five-and/or six-membered rings and th e PPA structure. Both complexes exhibited not only varying degree of catalytic activity depending upon the relative mole ratio of two monomers but also characterize the types of coploymers. The former yields the polyene backbone containing only five-membered rings as well as PA while the latter produces the polymers consisting of both five-and six-membered ring structure. Comparative studies show that Mo(CO)6 exhibits reactivity toward DEDPM alone, thus catalyzing initially metathesis cyclopoly-merization of DEDPM followed by copolymerization with PA while the (toluene)Mo(CO)3/chloranil system shows affinity for both PA and DEDPM.
김정식(Jeong-Sik Kim),전상진(Sang-Jin Jeon),조문성(Mun-Seong Jo),강효정(Hyo-Jeong Kang),김경욱(Kyung-Wuk Kim),최영호(Young Ho Choi),김형호(Hyoung-Ho Kim) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.11
Obstructive Sleep Apnea (OSA) is a prevalent sleep disorder characterized by repetitive episodes of upper airway collapse during sleep, resulting in reduced or completely obstructed airflow despite ongoing breathing efforts. Body Mass Index (BMI) is often considered one of the risk factors for OSA. A study was conducted using computational fluid dynamics to evaluate the correlation between Body Mass Index (BMI) groups and Obstructive Sleep Apnea (OSA) groups, and to identify factors that can be used for prediction. Through form factor analysis and dynamic factor analysis, we aim to obtain indicator that can help predict the correlation between OSA group, the normal group and the obese group. When examining the average BMI in the OSA group ,it was found to be 30±2 compared to Group4, while there was a difference of about 7 when compared to Group2. Furthermore, when comparing the Tortuosity and Q values in the OSA group with Group2 and Group4, significant differences were observed. Therefore, BMI, Q, and Tortuosity values could serve as significant indicators for detecting obstructive sleep apnea.
손건석(Geon Seog Son),윤승원(Seung Won Yun),김대중(Dae Joong Kim),전상진(Sang Jin Jeon) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As a part of stringent emission regulations, OBD on a converter is requested by EU and CARB. It demands that MIL is light-on to inform the failure to the driver when converter is failed in its function. Usually dual oxygen sensors method is used for converter OBD. For this, detail methods, like as amplitude ratio, time delay and frequency ratio methods are adapted for vehicle application. Actually the cars which are produced after MY94 for US market are using one of these methods.<br/> In this study, OSCs of conveters are investigated with an absolute measuring method. The converters are aged with a furnace aging, an engine bench aging and vehicle aging method to represent various aging condition in field applications. An OBD index that is used for TLEVs regulation is also investigated to find a relation between two parameters. The relations of these parameters with THC emission on vehicle are evaluated.<br/>
연료전지 차량용 고압기체수소 저장용기(Type4)개발(설계검증시험)
유계형(Yoo, Gye-Hyoung),주용선(Ju, Yong-Sun),허석봉(Heo, Seok-Bong),전상진(Jeon, Sang-Jin),김종열(Kim, Jong-Lyul),이중희(Lee, Jong-Hee) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.11
We developed and tested the high pressure hydrogen gas cylinder(type4) for fuel cell vehicle. The working pressure is 350bar. We conducted material tests, production tests and design qualification tests on the developed cylinders according to modified NGV2-2000(hydrogen). The high pressure hydrogen gas cylinder met all the design qualification requirements of ANSI/CSA NGV2-2000 and acquired NGV2 certification from independent inspection agency.
EST profiling을 통한 당근(Daucus carota var. sativa)의 종모 형성에 관련된 유전자 분석
황은미(Eun-Mi Hwang),오규동(Gyu-Dong Oh),심은조(Eun-Jo Shim),전상진(Sang-Jin Jeon),박영두(Young-Doo Park) 한국원예학회 2010 원예과학기술지 Vol.28 No.6
당근은 서양뿐만 아니라 중국 및 한국과 같은 아시아 전역에서 요리로 많이 이용되는 유용한 작물 중 하나이다. 그러나 당근 종자 표면에는 모(毛)가 존재하고 이 종모는 발아율을 증가시키기 위해 제거해야 한다. 더욱이 종모 처리는 시간과 인력 및 자본의 소비와 같은 추가적인 손실을 동반하였다. 이러한 문제점을 방지하기 위해 단모종자를 이용하여 모형성과 관련된 유전자의 연구가 필요하다. 당근 종모의 발달은 2차 세포벽의 합성단계 동안 cellulose의 합성 과정과 연관되어 있음을 바탕으로, EST profiling을 통해 종모와 관련된 유전자를 탐색하고자 하였다. 당근 종모 형성에 관련된 유전자 발현을 조사하기 위해, 성숙 초기 단계의 단모종자 659-1개체와 유모종자 677-14개체를 이용하여 cDNA library를 구축하였다. 단모종자 659-1개체와 유모종자 677-14개체에서 확보된 EST 염기서열의 NCBI database BLASTX 분석을 통한 EST profiling 결과, 172개와 224개의 unigene은 이미 알려진 단백질 염기서열과 상동성을 보였으며 나머지 233개와 192개의 unigene은 확인되지 않는 유전자들이었다. EST는 추정되는 기능에 따라 16개의 category로 그룹화되었다. 전체 EST 중 29개의 unigene이 2차 세포벽 합성단계 동안 cellulose의 합성 pathway상의 종모 형성을 조절하는 유전자로 추정되며, 실제로 종모 발달과 관련된 14개의 unigene이 유모종자 계통에서만 발견되었다. Carrot is one of the useful crops used abundantly in cooking in Western as well as Asia regions such as China and Korea. However, seed coats have hairs which should be removed to increase germination rate. Furthermore, because of seed hairs, farmers face several additional losses, such as time consumption, manpower, capital and so on, for seed handling. To prevent these problems, study of gene related hair formation using short-hair seed lines is required. We analyzed genes related to hair formation from seed through expressed sequenced tag (EST) profiling, based on the fact that the development of carrot seed hair is related to cellulose synthesis pathway in secondary cell wall synthesis stage. To study the gene expression related to hair formation of the carrot seed, a cDNA library was constructed by using the early maturation stage of the short-hair line (659-1) and hairy seed line (677-14). In short-hair (659-1) and hairy seed (677-14) lines, results from of EST profiling through BLASTX search analysis using the NCBI database showed that 172 and 224 unigenes had significant homology with known protein sequences, whereas 233 and 192 unigenes were not, respectively. All ESTs were grouped into 16 categories according to their putative functions. Twenty nine unigenes among all ESTs were considered to be genes regulating seed hair development from cellulose synthesis pathway during secondary cell wall synthesis stage; in results, 14 unigenes related to seed hair development were found only in hairy seed line.
당근 종모 형질 관련 EST profiling과 이를 이용한 EST-SSR 및 SNP 마커 개발
오규동(Gyu-Dong Oh),황은미(Eun-Mi Hwang),심은조(Eun-Jo Shim),전상진(Sang-Jin Jeon),박영두(Young-Doo Park) 한국원예학회 2010 원예과학기술지 Vol.28 No.6
당근(Daucus carota L. var. sativa)은 세계적으로 널리 이용되는 작물 중 하나이다. 또한 Vitamin A의 전구체인 β-carotene의 함량이 높아 영양적으로도 주요한 작물이다. 하지만 종자 표피세포에서 생성되는 종자모는 종자발아시 흡수를 저해하며 발아를 억제하여 기계적인 제모작업을 거쳐 상품화되고 있다. 이러한 과정에서 발생하는 여러가지 단점을 보완하기 위해 무모종자 당근 품종의 육종이 필요하다. 따라서 본 연구는 단모종자 표현형 CT-ATR615 OP 666-13 개체와 control 유모종자 표현형 CR-ATR615 OP-CK1-9개체의 종자 cDNA library를 작성하여 EST sequence비교를 통해 표현형의 차이에 따라 종자모 형성에 관련하여 발현양상을 비교 분석하였다. BlastX 결과를 바탕으로 개체간 동일한 결과를 제외한 EST sequence를 각각 FunCat 기능별 category로 분류하였다. Metabolism category에서 단모종자표현형 개체가 오히려 유모종자 표현형 개체보다 높은 발현량을 보이는 것을 확인하였으며, 단모 및 장모종자 개체간의 protein folding and stabilization, subcellular localization category에서 나타난 뚜렷한 발현량 차이는 종자모 형성에 많은 영향을 미치는 것으로 예측되었다. 또한 분석된 EST sequece를 바탕으로 개체별로 각각 50개 및 59개의 SSR site를 확인하였으며, 각각 2개씩의 SNP site를 확인하였다. 이들 SSR 및 SNP site의 primer 작성하여 마커로 개발하였으며, 이를 종자모 형성에 관련된 분자마커 개발에 이용하는 것은 물론 당근의 계통 분류 및 여러가지 형질 관련 분자마커 연구에 활용 가능할 것으로 기대된다. Carrot (Daucus carota L. var. sativa) is one of the most widely used crops in the world. Moreover it is an important crop because of its high content of β-carotene, well-known as the precursor of vitamin A carotenoid. However, seed-hair which is generated in epidermal cell of seeds inhibits absorption and germination. For that reason, carrot seeds are commercialized after mechanical hair removal process. To overcome such cumbersome weaknesses, new breeding program for developing hairless-seed carrot cultivar has been needed. Therefore, in this study, cDNA libraries from seeds of short-hair seed phenotype CT-ATR615 OP 666-13line and hairy seed CT-ATR615 OP-CK1-9 line were constructed and expression patterns related to generation of seed-hair were analyzed by comparison of EST sequences. Differential EST sequence results between two lines were classified into FunCat functional categories based on the results of BlastX search. Higher expression quantities belonging to metabolic category were shown on short-hair seed line than hairy-seed one. Differential expression quantities between those two lines in the protein folding and stabilization, subcellular localization categories were supposed to contribute variously on the generation of seed-hair. We confirmed 50 and 59 SSR sites, and 2 SNP sites by analyzing EST sequences in two lines; thereafter, we designed SNP and SSR primer sets from these EST sequence information as a molecular marker. These markers are thought to be used in research of molecular markers for classification of carrot family and related to various traits, as well as seed-hair characteristic.