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안정동위원소를 이용한 북한강 하천생태계 연구
강정임, 김재구, 이상돈 한국습지학회 한국습지학회지 8 Pages
한국습지학회 한국습지학회지 2011, Vol.13 No.3 13 515-522 (8 pages)
본 연구는 부식물 및 유기물로부터 분리 배양한 부착조류의 안정동위원소비 결과를 중심으로 분리된 부착조류의 안정동위원소비가 수질 대표성을 알아보기 위한 연구를 수행하였다. 주변 농경지의 분포가 많으며, 부착조류 현존량이 높아질수록, 부착조류의 질소안정동위원소비는 증가하며, 탄소안정동위원소비는 감소하는 경향을 보였다. 농경지 중심지역인 내린천 상류, 인북천 상류지역에서 질소안정동위원소비(δ15N)가 임야 중심지역인 한계천 및 북천에서의 값보다 높았다. 탄소안정동위원소비(δ13C)는 농경지에 의한 오염으로... -
Effect of Nitrogen-Load Condition on Hydrogen Production and Bacterial Community in Continuous Anaerobic Hydrogen Fermentation Process
Yasunori Kawagoshi, Masaharu Nakao, Naoe Hino, Tomonori Iwasa, K 한국습지학회 한국습지학회지 9 Pages
한국습지학회 한국습지학회지 2007, Vol.9 No.1 13 123-131 (9 pages)
Effect of nitrogen-load condition on hydrogen (H2) production and bacterial community in a continuous anaerobic hydrogen fermentation were investigated. The slight H2 production on extremely low nitrogen-load condition (C/N ratio: 180) at the start-up period. The highest H2 production was obtained when the C/N ratio was 36, the H2 production yield (mol-H2 / mol-glucose) reached to 1.7, and it was indicated that Clostridium pasteurianum mainly contributed to the H2 production. The H2 production... -
Comparison of Questions Used in Science Textbooks of Nepal and Korea: Focused on the Chemistry Unit
Indra Raj Upadhyaya, JaeYoung Han 경인교육대학교 교육연구원 교육논총 11 Pages
경인교육대학교 교육연구원 교육논총 2022, 제 42권 제 2호 3 33-43 (11 pages)
Questioning is the key component to create curiosity, motivation, and critical thinking in the students. This study aimed at analysing and comparing the questioning strategies in the chemistry units of middle and high school science textbooks of Nepal and Korea. The TQSAI was used as the instrument for analysing the questions in middle and high school textbooks. The questions were classified as the experiential type or the non-experiential type. In general, the Nepalese textbooks consist of a... -
Enhancing effects of serum-rich and cytokine-supplemented culture conditions on developing blastocysts and deriving porcine parthenogenetic embryonic stem cells
Soo-Kyung Jung, Hyun-Jung Kim, Chan-Lan Kim, Joo-Hyeong Lee, Jin-Young You, Eun-Song Lee, Jeong-Mook Lim, Seon Jong Yun, Jae-You 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 4호 9 519-528 (10 pages)
of inner cell masses (ICMs) onto feeder cells, and formation of primitive ppESC colonies. ICM attachment was further enhanced by basic fibroblast growth factor, stem cell factor, and leukemia inhibitory factor. From these attached ICMs, seven ppESC lines were established. ppESC pluripotency was verified by strong enzymatic alkaline phosphatase activity and the expression of pluripotent markers OCT3/4, Nanog, and SSEA4. Moreover, the ppESCs were induced to form an embryoid body and teratoma.... -
집속 회전형 X-선원과 이차원 검출기를 이용한 광물의 실시간 상전이 연구
성동훈, 이용문, 이용재, Seoung. Dong-Hoon, Lee. Yong-Moon, Lee. Yong-Jae 대한자원환경지질학회 자원환경지질 10 Pages
대한자원환경지질학회 자원환경지질 2012, Vol.45 No.2 79-88 (10 pages)
최근 개발된 상용 X-선원들은 기존 선원들에 비하여 비약적으로 증가된 휘도와 집속율을 보임으로써 다양한 형태의 연구실 규모의 분말회절 분석을 가능하게 하고 있다. 더욱이, 개선된 소프트웨어 및 시료환경 장치와 더불어 2차원 검출기의 성능향상은 다양한 온도, 압력하에서의 상전이 현상 및 이온교환 반응과 같은 새로운 형태의 실시간 및 시간분해 회절실험을 가능하게 하고 있다. 본 논문에서는 (1) 나트로라이트의 이온교환 특성에 관한 실시간 측정, (2) 이온교환된 나트로라이트의 탈수 및 열팽창 특성에 관한 실시간 측정,... -
Stage-specific embryonic antigen: determining expression in canine glioblastoma, melanoma, and mammary cancer cells
Weiming Lin, Jaime F Modiano, Daisuke Ito 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 1호 14 101-104 (4 pages)
and mammary cancer cells, although none expressed SSEA-3 or SSEA-4. Expression of SSEA-1 was not detected in lymphoma, osteosarcoma, or hemangiosarcoma cell lines. Relatively stable SSEA-1 expression was observed between 24 and 72 h of culture. After 8 days in culture, sorted SSEA-1 and SSEA-1cells re-established SSEA-1 expression to levels comparable to those observed in unsorted cells. Our results document, for the first time, the expression of SSEA-1 in several canine cancer cell lines. -
Learning, memory and exploratory similarities in genetically identical cloned dogs
Chi Won Shin, Geon A Kim, Won Jun Park, Kwan Yong Park, Jeong Min Jeon, Hyun Ju Oh, Min Jung Kim, Byeong Chun Lee 대한수의학회 Journal of Veterinary Science 5 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 4호 16 563-567 (5 pages)
Somatic cell nuclear transfer allows generation of genetically identical animals using donor cells derived from animals with particular traits. To date, few studies have investigated whether or not these cloned dogs will show identical behavior patterns. To address this question, learning, memory and exploratory patterns were examined using six cloned dogs with identical nuclear genomes. The variance of total incorrect choice number in the Y-maze test among cloned dogs was significantly lower... -
Comparison of the age-related porcine endogenous retrovirus (PERV) expression using duplex RT-PCR
Hyoung Joon Moon, Hye Kwon Kim, Seong Jun Park, Chul Seung Lee, Dae Sub Song, Bo Kyu Kang, Bong Kyun Park* 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 4호 7 317-322 (6 pages)
Porcine endogenous retroviruses (PERVs) are members of family Retroviridae, genus Gamma retrovirus, and transmitted by both horizontally and vertically like other endogenous retroviruses (ERVs). PERV was initially described in the 1970s having inserted its gene in the host genome of different pig breeds, and three classes, PERV-A, PERV-B, and PERV-C are known. The therapeutic use of living cells, tissues, and organs from animals called xenotransplantation might relieve the limited supply of... -
A comparative study of Sephadex, glass wool and Percoll separation techniques on sperm quality and IVF results for cryopreserved bovine semen
Hae-Lee Lee, Sue-Hee Kim, Dong-Beom Ji, Yong-Jun Kim* 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 3호 11 249-255 (7 pages)
The aim of this study was to compare the effects of spermatozoa separation techniques on sperm quality and in-vitro fertilization (IVF) results for cryopreserved bovine semen. Sephadex, glass wool and Percoll gradient separation techniques were used for sperm separation and sperm motility, morphology and membrane integrity were evaluated before and after separation. Also, cleavage and blastocyst developmental rate were investigated after IVF with sperm recovered by each separation technique. The...
