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Development of in vitro produced porcine embryos according to serum types as macromolecule
손정민,Don Buddika Oshadi Malaweera,이은송,신상태,조종기 대한수의학회 2013 JOURNAL OF VETERINARY SCIENCE Vol.14 No.3
This study was conducted to establish an in vitro maturation (IVM) system by selection of efficient porcine serum during porcine in vitro production. To investigate the efficient porcine serum (PS), different types of PS [newborn pig serum,prepubertal gilt serum (PGS), estrus sow serum, and pregnancy sow serum] were used to supplement IVM media with or without gonadotrophin (GTH) and development rates of parthenogenetic activation (PA) and in vitro fertilization (IVF) embryos were then compared. The maturation rates of the PGS group was significantly higher when GTH was not added. Additionally, during development of PA embryos without GTH, the PGS group showed significantly higher cleavage and blastocyst formation rates. Moreover, the cleavage rates of IVF embryos were significantly higher in the PGS group, with no significant differences in the blastocyst formation. However, when GTH was supplemented into the IVM media, there were no significant differences among the four groups in the cleavage rates, development rates of the blastocyst, and cell number of the blastocyst after PA and IVF. In conclusion, PGS is an efficient macromolecule in porcine IVM, and GTH supplementation of the IVM media is beneficial when PS is used as macromolecule, regardless of its origin.
산업체 자동화의 고용 및 임금 효과: 대기업과 중소기업의 비교
손정민 산업연구원 2019 산업연구(JIET) Vol.3 No.1
This study examines the influence of automation of manufacturer and service firms on the labor market in Korea, that is, the incremental employment rate and wage. I also examine the moderating role of firm type. I use the Workplace Panel Survey data from 2005 to 2015 gathered by Korea Labor Institute. This research finds the differential effects of employments and wages between large enterprises and SMEs. Incremental ratio of automation decrease the rate of employments in average on SMEs for a year. The ratio of automation increases the rate of employments on large-sized enterprises. The incremental ratio of executives is increased by the automation ratio on the large-sized enterprises, but the ratio of manager is decreased, and the ratio of non-manager is increased by the automation ratio on SMEs. The incremental ratio of automation increase the wages on SMEs, but the ration of automation decreases it on the large-sized enterprises.
경력단절 여성의 재취업 욕구 변화궤적과 예측요인: 심리사회적기능 요인을 중심으로
손정민 한국사회보장학회 2016 한국사회보장학회 정기학술대회 Vol.2016 No.2
본 연구는 경력단절 여성의 재취업 욕구의 변화궤적을 추정하고, 경력단절 여성의 재취업욕구 궤적에 영향을 미치는 예측요인을 심리사회적 기능 요인 중심으로 확인하고자 하였다. 한국복지패널 데이터를 활용하였으며, 궤적 및 예측요인은 잠재성장모형(LGM)을 적용하여 확인 하였다. 경력단절 여성의 재취업 욕구 변화궤적은 시간이 지남에 따라 선형모형으로 증가궤적을 보였으며, 예측요인은 우울감과 배우자관계 만족도로 확인되었다. 본 연구결과를 바탕으로 경력단절 여성의 심리사회적 기능의 긍정적 변화를 유도하고, 이를 통하여 재취업 성공 효과를 극대화 할 수 있는 사회복지적 측면의 실천적 개입자료를 제시하는데 의의가 있다.
Lumbar Angiomatous Meningioma in a Dog
손정민,김보은,정선영,지서연,윤대영,권오경,김대용,최민철,윤정희 한국임상수의학회 2014 한국임상수의학회지 Vol.31 No.2
An 11-year-old castrated Schnauzer presented with paraplegia for the last two weeks, initially developedpelvic limb ataxia 6 months ago and left pelvic limb paresis 3 months ago. On neurological examination, paraplegiaand postural reaction deficits were noted in the pelvic limbs with no deep pain sensation, and the dog showedexaggerated spinal reflexes and involuntary urination. Magnetic resonance (MR) images of thoracolumbar spinal cordwere obtained with a 0.3 Tesla magnet. A mass with a broad base to the dorsal and left dural margins was identifiedat the level of L2, causing marked spinal cord compression. The mass showed isointensity to the spinal cord on T1-weighted (T1W) precontrast images, hyperintensity on T2-weighted images, marked homogeneous contrast enhancementwith well-defined margins and the “dural tail” sign on T1W postcontrast images. An intradural-extramedullay tumorwas considered, most likely, meningioma was highly suggestive. Left-sided hemilaminectomy and dorsal laminectomywere performed. An intradural mass partially adherent to dura mater was compressing the spinal cord, and the masswas completely removed with the attached dura mater. A histopathologic diagnosis of angiomatous subtype meningiomawas made.
아토피 피부염에서 유전자 연구와 사상체질의학적 접근의 상관성에 관한 문헌적 고찰
손정민,최인화,Son, Jung-Min,Choi, In-Hwa 대한한방안이비인후피부과학회 2005 한방안이비인후피부과학회지 Vol.18 No.2
Objectives: The objective of this study is to investigate the correlation between genetic studies on atopic dermatitis. sasang constitution, and sasang constitional study on atopic dermatitis. Methods: We retrieved data on PubMed for the papers of genetic study on atopic dermatitis. And for the papers on genetic study of sasang constitution and sasang constitional study of atopic dermatitis, we referred to papers have reported on domestic medical journal and domestic korean medicine journal. And we investigated correlations among the studies. Results: 1. There are two studies on genetic study on atopic dermatitis. One has been performed to find out genes related to atopic dermatitis by case-control study. The other has been to investigate the correlation between atopic dermatitis and the genes their functions were well-known. 2. Gene study on sasang constitution was performed to observe the distribution of the genes which is related with characteristics of sasang constitution, but there was no significant maldistribution of the genes. 3. There was no correlation between genetic study on atopic dermatitis and genetic study on sasang constitution. Conclusion & Discussion: In the Sasang constitutional study of atopic dermatitis, it seems that further studies on genes related to characteristics of skin, character affecting on behavior, and neurobiological difference among Sasang constitution are required as well as studies on distribution of genes related atopic dermatitis.