• Journal of Ginseng Research
• /
• 제37권3호
• /
• pp.341-348
• /
• 2013

Identification of the origins of Panax ginseng has been issued in Korea scientifically and economically. We describe a metabolomics approach used for discrimination and prediction of ginseng roots from different origins in Korea. The fresh ginseng roots from six ginseng cooperative associations (Gangwon, Gaeseong, Punggi, Chungbuk, Jeonbuk, and Anseong) were analyzed by UPLC-MS-based approach combined with orthogonal projections to latent structure-discriminant analysis multivariate analysis. The ginsengs from Gangwon and Gaeseong were easily differentiated. We further analyzed the metabolomics results in subgroups. Punggi, Chungbuk, Jeonbuk, and Anseong ginseng could be easily differentiated by the first two orthogonal components. As a validation of the discrimination model, we performed blind prediction tests of sample origins using an external test set. Our model predicted their geographical origins as 99.7% probability. The robust discriminatory power and statistical validity of our method suggest its general applicability for determining the origins of P. ginseng samples.

• 한국과학교육학회지
• /
• 제27권6호
• /
• pp.465-476
• /
• 2007

Whether and when naturalistic or supernaturalistic explanations of the origins of sun and earth, humans, life and species change with development was explored in a questionnaire and interviews with 32 first graders and 32 second graders, and in a questionnaire with 34 third graders, 32 sixth graders and 38 eighth graders. Participants were also asked about factors affecting their explanations in the questionnaires. Even the first and second graders could consistently provide supernaturalistic or naturalistic explanations on both the origins of sun and earth, and of humans. There was an age-related developmental shift from supernaturalistic to naturalistic explanation. As for origins of species, most of the first and second graders held the spontaneous generationist explanation, and after the third grade their views divided into evolutionist and creationist explanations. Students' explanations of species origins were established by the sixth grade through a transitional stage in the third grade. At the first and second grade levels, books and the children's own reasoning mainly influenced the views of origins, whereas parents and school were not perceived as being important. For the third graders and higher-grade levels, several factors, including parents and religion, were perceived as being important. These results show that explanations of origins start to develop earlier than or during the first grade, and are established by the sixth grade; moreover, the formation of these views is affected by several factors in addition to development.

• 한국작물학회지
• /
• 제65권4호
• /
• pp.447-456
• /
• 2020

Peanut is an allotetraploid derived from a single recent polyploidization. Polyploidization has been reported to have caused significant loss in genetic diversity during the domestication of cultivated peanuts. Single nucleotide polymorphism (SNP)-based markers such as cleaved amplified polymorphic sequences (CAPS) derived from next-generation sequencing (NGS) have been developed and widely applied for breeding and genetic research in peanuts. This study aimed to identify the genetic diversity and population structure using 30 CAPS markers and 96 peanut accessions from five different origins. High genetic dissimilarities were detected between the accessions from Korea and those from the other three South American origins generally regarded as the origin of peanuts, while the accessions from Brazil and Argentina presented the lowest genetic dissimilarity. Based on the results of the present study, accessions from Korea have unique genetic variation compared to those from other countries, while accessions from the other four origins are closely related. Our study identified the genetic differentiation in 96 peanut accessions from five different origins, and this study also showed the successful application of SNP information derived from re-sequencing based on NGS technology.

• Archives of Plastic Surgery
• /
• 제47권2호
• /
• pp.160-164
• /
• 2020

Background Implant-based dual-plane augmentation mammoplasty requires accurate separation of the pectoralis major muscle (PMM) at its origins. The authors identified the PMM origins during breast reconstruction surgery with the goal of providing additional information on subpectoral implant insertion for reconstructive or aesthetic purposes. Methods This study was conducted on 67 patients who underwent breast reconstruction surgery at the breast center of our hospital between November 2016 and June 2018. In total, 34 left and 39 right hemithoraces were examined. The left and right hemithoraces were each divided into 15 zones to determine the percentage of PMM attachments in each zone. The distribution of PMM origins in each zone was examined to identify any statistically significant differences. Results There were no statistically significant differences in the origins of the PMM between the right and left hemithoraces. The percentage of attachments increased moving from the fourth to the sixth rib and from the lateral to the medial aspect. Conclusions The anatomical findings of this study could be used as a reference for accurate dissection of the origins of the PMM for the preparation of the subpectoral pocket for subpectoral implant placement.

• 대한공간정보학회지
• /
• 제16권3호
• /
• pp.3-13
• /
• 2008

통일원점과 구소삼각원점 계열의 성과가 혼재되어 있는 지역의 지적측량기준점에 대하여 GPS관측거리를 이용하는 삼변망조정계산 방법에 의하여 단일 원점계열의 성과를 산출하였다. 삼변망조정계산의 적용은 각 원점계열별로 성과가 상호 부합하는 점들을 추출하여 자유망조정을 실시하고, 다음으로 이들 자유망조정의 성과에다 나머지 점들을 연결하는 고정망조정계산에 의해 지역 내 모든 점들의 좌표를 산출하였다. 실제 계산은 인천광역시의 가리계열 18점, 계양계열 17점, 중부계열 33점 등의 원점계열별 기준점을 이용하여 지역 전체의 합계 68점의 기준점에 대한 단일 원점계열의 성과를 산출하였다. 새로이 산출한 각 원점계열의 좌표 간에는 정량의 방위각과 축척계수의 차이가 있고 수작업으로 이를 보정하는 계산에 의해서도 서로 다른 원점 계열의 근사 좌표 산출이 가능하였다.

• 대한본초학회지
• /
• 제28권5호
• /
• pp.103-111
• /
• 2013

Objectives : Herbal medicines were used a lot in the Northeast Asia, traditionally. However, the pharmacopoeia standards in South Korea, China, Japan, Taiwan, and North Korea including many other Asia are different and cause confusion. If the origins are not belonging to same genus, it should be careful to distinguish. In this study, herbal medicines in the pharmacopoeia were analyzed for different genus of origins in order to identify the disruptive items for each country. Methods : The scientific names of herbal medicines (plant based) was analyzed origins from Pharmacopoeias of Republic of Korea, People's Republic of China, Japan, Taiwan, and Democratic People's Republic of Korea. The origins specified differently were examined. Especially, the items which have different genus were analyzed in detail and confirmed for correct scientific name. Results : The analyzed herbal medicines in Pharmacopoeia were all 753 items. 320 items were in only one country's Pharmacopoeia. 237 items were in more than two countries' Pharmacopoeia, but their origins were same on each other. The items which have different genus were 35 items. Conclusions : In general, species belonging to the same genus have similar ecological, morphological, and pharmacological activity. However, species with different genus may have different medicinal ingredients and pharmacological activity. Thus, the items which have same name but different genus are required to analyze for comparison of pharmacological activity. Also, other species belonging to the different genus should be used for different items.

• 한국컴퓨터정보학회논문지
• /
• 제27권8호
• /
• pp.91-101
• /
• 2022

본 연구는 한국 방송의 역사적 기원들에 대한 검토가 한국 방송의 미래를 모색하는 데에도 큰 의의를 가질 것이라는 문제의식에서 출발하여, 한국 방송의 여러 '기원들'(origins) - 식민지적 기원, 냉전적 기원, 전체주의적 기원, 신자유주의적 기원 - 을 검토했다. 보다 구체적으로는 한국 사회의 미디어 현실에서 출발하면서 그 현실이 세계사와 어떠한 연쇄구조와 단절구조를 가지는지를 파악하려는 시각이 필요하다는 포스트콜로니얼 역사서술의 입장에서, 단선적으로 미디어역사를 바라보지 않는 대안적인 시각으로 등장한 '미디어고고학'(media archaeology)의 이론적 입장을 채택했다. 이러한 이론적 배경에 입각하여, 한국 방송의 역사적 '기원들'을 당대의 정치경제적 계기와 국가의 상황적 문제의식, 주요 방송정책과 그 방송정책 속애서 전개된 방송현실들을 개괄적으로 살펴보고, 이를 21세기 한류의 기원을 추적하는 데 적용했다. 연구결과, 한류의 역사적 기원이 1980년대부터 형성되기 시작한 신자유주의적 기원이 이후 전개과정에서 한국 방송의 세 기원과 '융합적으로(synthetically) 혼재함'으로부터 비롯된 것이라는 잠정적 결론에 도달했다.

• Journal of Dairy Science and Biotechnology
• /
• 제7권1호
• /
• pp.6-19
• /
• 1989

Twenty-five commercial food grade and alalytical grade lipases were used to study the patterns of release of short-chain free fatty acids (FFA) from milk fat in cheese slurries. Principal component Analysis showed that there were four distinctive groups by the FFA ratios and five groups by the FFA concentrations. However, Average Linkage Cluster Analysis showed that the patterns of FFA released were dependent upon distance defined between groups of lipases. All the lipases tested with both statistical analysis had distinctive specificities in hydrolyzing short-chain FFA from milk fat. Lipases from ruminant-animal origins produced an extremely high ratio (>40%) of butyric acid and a low ratio (<26%) of capric acid to total short chain FFA. Lipases from porcinepancreas and some microbial origins showed balanced production in both bytyric and capric acid. However, most lipases from microbial origins released a high ratio of capric acid but similar ratios to other origin enzymes for short-chain free fatty acids. Ruminant-animal origin lipases produced short-chain FFA much higher in concentration than other lipases. Lipases from porcine pancreas as well as microbial origins showed different concentrations of the fatty acids. Ratios of short-chain FFA in each sample were not significantly changed during incubation periods (4 wk), whereas concentrations of the FFA increased considerably.

• Journal of the Korean Wood Science and Technology
• /
• 제43권3호
• /
• pp.287-294
• /
• 2015

본 연구는 4개 산지(유고슬라비아, 이탈리아, 영국, 불가리아)의 24년생 글루티노사오리나무를 대상으로 종압축 및 휨강도 특성을 규명하고, 또한 이들을 생장속도(평균연륜폭)와의 관계도 규명하였다. 압축강도는 $231{\sim}326kgf/cm^2$의 범위였고, 산지 간 차이를 보였다. 세 개 산지는 생장이 좋을수록 압축강도 및 압축영계수는 저하되는 것으로 나타났으나, Yugoslavia산지는 생장이 가장 좋으면서도 가장 높은 강도 값을 나타냈다. 휨강도는 $426{\sim}727kgf/cm^2$의 범위였고, 산지 간 차이가 있었다. 휨강도는 생장이 좋을수록 강도 및 영계수가 커지는 것으로 나타났다. 종자 산지가 다른 글루티노사오리나무 중 유고슬라비아산이 좋은 수고생장과, 다른 산지의 약 2배의 흉고직경을 나타내며, 압축, 휨강도에서도 가장 우수하여 생장과 재질면을 고려했을 때 현시점에서 가장 우수한 품종으로 판단된다.

• Journal of Ginseng Research
• /
• 제22권4호
• /
• pp.294-298
• /
• 1998

This study was conducted to investigate the effects of growth characteristics and mineral contents of ginseng seedling grown in different locations on ginseng growth and root yield. Ginseng seedling produced in 16 farmers' field at the semi-Yangjik seedbed were planted and cultivated in a field with same cultural practices. Missing plant was increased with increased year of ginseng age, especially severe at 5-year-old ginseng. Rate of missing plant was different among the origins of the seedling, even with the same weights. Negative correlation was noted between the missing rate of 3-year-old ginseng plants and NH4-N content of the seedling, but positive correlation between the missing rate and K2O and Ca contents of the seedling. Root yield of 6-year-old ginseng was also affected by the origins of ginseng seedlings. Root yield was high in ginseng plant from 0.6∼0.9 g see dings compared to those from over 0.9 g seedlings.