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Chan Hee Park,HyungWoo Lim,HyunWoo Kim,Mi Yeoun Park,Wook-Kyo Lee,Jong Yul Roh,Kyu Sik Chang,E-Hyun Shin 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
The intracellular endosymbiont bacterium Wolbachia is currently considered the most abundant in arthropods. Many Wolbachia manipulate host reproductive systems, it lead to male-killing, cytoplasmic incompatibility, parthenogenesis and feminization of genetic males with large impact on host ecology and evolution in arthropods. In this study, we investigated the distribution of Wolbachia infection in Ae. albopictus according to geographical distribution. We selected 9 areas and collected Ae. albopictus, these areas were distinguished with mountain chain and waterway. Whole genomic DNA were extracted from collected specimens and PCR analysis were accomplished in each specimen using Wolbachia specific primers such as 16S and WSP genes. As a results, we collected 730 Ae. albopictus at least 30 specimens in each area. Wolbachia infection rate showed different patterns between geographical region. Cheonbook, Cheonnam and Yeongdong showed 100% infection rate followed by Jeju (97%), Chungchung (88%), and Gyungnam (85%) with two Wolbachia marker genes. Our results indicated that Ae. albopictus are commonly infected with Wolbachia, it is possible that Wolbachia may act as endosymbiont in Ae. albopictus regardless of geographical region. Although, low infection rate of Wolbachia, we need continuous survey for the evaluation of Wolbachia strain within Ae. albopictus as a vector of dengue fever.
유전자 알고리즘을 이용한 음성의 특징 벡터 코드북의 성능 분석
이건상,백인찬,서정파,전병우,권영헌 漢陽大學校 自然科學硏究所 1999 自然科學論文集 Vol.18 No.-
음성의 특징벡터 코드북을 형성하는 벡터 양자화 과정에서 진화 및 유전원리에 기초한 유전자 알고리즘으로 얻어진 코드북과 기존의 LBG알고리즘으로 얻은 코드북사이의 인식 성능을 비교하였다. 이를 위해 유전자 알고리즘에서 초기 개체집단을 형성할 때 훈련벡터들의 초기분포를 반영하도록 하였고, 유전 연산자로 교배와 돌연변이 연산자를 사용하였다. 인식 성능을 비교하기 위해 특징 벡터로는 주파수 대역별 에너지와 LSF계수를 사용하여 화자종속으로 인식실험을 수행하였다. 실험결과 LBG 알고리즘을 사용한 코드북보다 유전자 알고리즘을 사용한 코드북의 인식 성능이 우수함을 살펴 볼수 있었다. In the development of speech codebook by vector quantization method, we compared the performance of the codebook by LBG algorithms with that by genetic algorithms based on the biological process of evolution and genetic principle. We reflected a initial distribution of training vectors to set up a initial population in genetic algorithm. The crossover and mutation are used as genetic operators. We performed the recognition experiments in speaker-dependent method using the feature vectors as the nomalized energies in frequency domain and LSF coefficients. So we investigated the recognition performance of the codebook by the above two algorithms. We have known that the recognition performance of the codebook by the algorithm is better than that by the LBG algorithm.
정파종,김성우,박찬현<SUP>1<.SUP>,김한준,Pa Jong Jung,M.D.,Sung Woo Kim,M.D.,Chan Hyun Park,M.D.<SUP>1 <.SUP>and Han Joon Kim,M.D. 대한갑상선-내분비외과학회 2003 The Koreran journal of Endocrine Surgery Vol.3 No.1
The enlarged parathyroid glands associated with chronic renal failure were recognized during the 1930's. The number of patients on long-term hemodialysis due to chronic renal failure is steadily increasing and the hyperparathyroid state certainly became a clinical problem in the dialysis population. The physiologic mechanisms leading to secondary hyperparathyroidism are multifactorial with renal phosphate retention, skeletal resistance to parathyroid hormone (PTH) action and impairment vitamin D metabolism being some of the known factors. Despite intensive medical management however inadequate control of parathyroid hyperplasia may necessitate surgical intervention. The goal of surgical therapy is to resect sufficient tissue to reverse the hyperparathyroidism without rendering the patient permanently hypoparathyroidism. We experienced a case of secondary hyperparathyroidism and reported its result of total parathyroidectomy, autogenous transplantation and cryopreservation of parathyroid gland. (Korean J Endocrine Surg 2002;2:57-62)
식도 정맥류 출혈에 대한 Kobayashi Procedure
김재민(Jea Min Kim),전규영(Kyu Young Jun),신동일(Dong Ill Shin),박찬대(Chan Dae Park),권오정(Oh Jung Kwon),권성준(Sung Joon Kwon),정파종(Pa Jong Jung),이광수(Kwang Soo Lee),원치규(Chi Kyooh Won),곽진영(Jin Young Kwak),김용일(Yong Il 대한외과학회 1996 Annals of Surgical Treatment and Research(ASRT) Vol.51 No.1
고령자와 약년자 위암의 임상병리학적 특성 및 수술성적의 비교 검토
권성준(Sung Joon Kwon),최동호(Dong Ho Choi),박영석(Young Seok Park),이홍찬(Hong Chan Lee),이구진(Goo Jin Lee),권오정(Oh Jung Kwon),정파종(Pa Jong Jung),이광수(Kwang Soo Lee),전규영(Kyu Young Jun),원치규(Chi Kyooh Won),곽진영(Jin Youn 대한외과학회 1997 Annals of Surgical Treatment and Research Vol.52 No.4
김원(Won Kim),심성례(Sung-Lye Shim),유근영(Keun-Young Ryu),전삼녀(Sam-Nyeo Jun),정찬희(Chan-Hee Jung),서혜영(Hye-Young Seo),송현파(Hyun-Pa Song),김경수(Kyong-Su Kim) 한국식품영양과학회 2008 한국식품영양과학회지 Vol.37 No.2
신고배(Pyrus pyrifolia cv. Niitaka)의 휘발성 향기성분에 전자선 조사의 영향과 전자선 조사 후 저장기간에 따른 휘발성 향기성분의 변화를 확인하기 위하여 본 연구를 수행하였다. SDE 추출방법과 GC/MS 분석에 의하여 선량에 따른 신고배의 휘발성 향기성분을 분석하였다. 비조사 신고배와 전자선 0.25, 0.5, 1 그리고 3 kGy로 조사된 신고배에서 각각 46, 45, 44, 48 그리고 51종의 화합물을 동정하였다. 신고배의 주요 휘발성 향기성분으로는 C?화합물인 hexanal, n-hexanol, (E)-2-hexenal이 분리 동정되었다. 4℃에서 30일 저장 후 신고배의 휘발성 향기성분의 조성은 유사하였으며, 저장기간 동안 크게 변화가 없었다. 소비자 수용성에 기여하는 휘발성 향기성분에 대하여 전자선 조사는 휘발성 향기성분의 변화에 크게 영향을 미치지 않는 것으로 판단되었다. 관능평가 실시 결과, 1 kGy 이하의 저선량으로 전자선 조사된 배의 기호도가 대조군보다 오히려 약간 높은 것으로 나타났으며 유의적인 차이는 없었다. 위의 결과를 토대로 신고배의 전자선 조사기술을 적용하기 위해서는 다양한 실험방법을 통한 지속적인 연구가 필요할 것으로 사료된다. This study was performed to examine the effects of electron beam irradiation on volatile flavor components of Shingo pear (Pyrus pyrifolia cv. Niitaka) and on their changes according to storing period following irradiation. Volatile flavor components in pear were extracted using simultaneous steam distillation and extraction (SDE) apparatus and analyzed by GC/MS. 46 components were identified in control whereas 45, 44, 48 and 51 components were identified in irradiated samples by electron beam at 0.25, 0.5, 1, and 3 kGy, respectively. Hexanal, n-hexanol, and (E)-2-hexenal were identified as the major volatile flavor components of all samples. The characteristic volatile flavor components of irradiated pear by electron beam were similar to those of control, and their effects depending on irradiation source were not different. In addition, there was no noticeable change in volatile flavor components of pear with storage at 4℃ for 30 days or with irradiation. Sensory evaluation indicated that the consumer receptiveness tended to be higher at a low level of radiation dose under 1 kGy than control, albeit not significant. Therefore, electron beam irradiation at low level of radiation dose under 1 kGy could be considered as an effective method to exterminate vermin and thus to improve the shelf-stability of pear without deterioration.