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임산부의 혈중 엽산과 호모시스틴 수준이 태반세포의 DNA 메틸화에 미치는 영향
박보현,김영주,이화영,하은희,민정원,박종순,박혜숙,Park, Bo-Hyun,Kim, Young-Ju,Lee, Hwa-Young,Ha, Eun-Hee,Min, Jung-Won,Park, Jong-Soon,Park, Hye-Sook 대한예방의학회 2005 예방의학회지 Vol.38 No.4
Objectives : DNA methylation is one of the best characterized epigenetic mechanisms that play a regulatory role in genome programming and imprinting during embryogenesis. In this present study, we investigated the association between DNA methylation in the human placenta and the maternal folate and homocysteine concentrations on the Methylenetetrahydrofolatereductase (MTHFR) genetic polymorphism during pregnancy. Methods : We investigated 107 pregnant women who visited Ewha Woman's University Hospital for prenatal care during their $24{\sim}28$ weeks-period of gestation. During the second trimester, we measured the serum homocysteine and folate concentrations . The MTHFR 677 genetic polymorphism was determine by performing PCR-RFLP assay. The expression of DNA methylation in the human placentas was estimated by using immunohistochemistry method. Results : Serum folate was negatively correlated with the serum homocysteine concentration for all the MTHFR genotypes. We found positive correlation between the folate concentrations and the DNA methylation in the human placenta (p<0.05). An increasing concentration of homocysteine was associated with reduced DNA methylation in the human placenta. The coefficient value was -2.03 (-3.77, -0.29) on the regression model (p<0.05). Conclusion : These findings suggest that the maternal folate and homocysteine levels along with the MTHFR 677 genetic polymorphism during pregnancy affect the DNA methylation in the human placenta.
무릎관절 멀리건 테이핑이 균형능력과 각근력에 미치는 효과와 측정의 반복에 의한 효과 비교
박보현,최수홍,김성중,박수형,오강오,Park, Bo-hyun,Choi, Su-hong,Kim, Sung-joong,Park, Su-hyung,Oh, Kang-o 대한정형도수물리치료학회 2018 대한정형도수물리치료학회지 Vol.24 No.2
Background: The purpose of this study was to compare the effects of mulligan taping on knee joints on balance ability and strength with repeated measurements. Methods: Seventeen patients were randomly assigned to the 8 taping group and the 9 repeat measurement group. To measure the balance ability, fall risk assessment equipment was used, and the measurement of the muscle strength was performed by using the equipment of the same company. Results: Balanced abilities and muscle strength were increased in groups with taping only after Mulligan taping. Conclusions: The application of mulligan taping did not have the effect of stimulating the inherent receptive sensation. However, active grouping of the knee joint taping only, and muscle strength and muscle strength were increased. It increases the stability and activity of the muscles that operate on the balance of the active knee joint and muscle strength, thereby enhancing exercise prevention and prevention performance and exercise performance.
박보현 ( Bo Hyun Park ) 고려대학교 한국어문교육연구소 2011 한국어문교육 Vol.9 No.-
본 연구는 문법 교과서의 본문에서 예문을 어떠한 방식으로 제시하고 있는지에 대해 7차 고등학교 심화·선택 과목 「문법」교과서와 2007년 개정 중학교 인정 「문법」 교과서를 대상으로 분석한 연구이다. 연구의 초점화를 위해서 ``예문``의 범위는 ``본문에 등장하는 예문으로써 언어 단위가 문장 이상인 예문``으로 한정하였고 그림이나 도표와 같은 순수 비언어 자료는 제외하였다. 2장에서 설정한 예문 분류 기준은 ``문법 단위``, ``예문 완성도``, ``통합성``의 세 가지이다. 먼저 문법 단위는 그 자체가 문법 교육의 대상인 동시에 교수-학습 방법과 평가에 커다란 영향을 미치는 중요한 요소이기 때문에 예문의 첫 번째 분류 기준으로 설정하였으며 이에 따른 예문의 유형은 문장 중심 예문과 담화 중심 예문으로 분류 된다. 두 번째 분류 기준인 예문 완성도란 말 그대로 ``예문이 형태와 의미의 양 측면에서 모두 완성 되었는가``의 여부이며 이에 따른 예문의 유형은 완성형 예문과 미완성형 예문이다. 세 번째 기준인 통합성은 문법과 문학 또는 국어기능 영역과의 통합 여부를 의미하는 것으로 ``자료의 통합``만을 논의하는 것이며 이에 따라 예문의 유형은 독자적 예문과 통합적 예문으로 분류된다. 3장에서는 예문 분류 기준에 따라 실제 중학교와 고등학교의 「문법」교과서의 예문이 어떻게 제시되어 있는지 분류하여 그 실례를 제시하였으며 이를 바탕으로 4장에 수치화된 결과를 제시하였는데 그 결과는 다음과 같다. 첫째, 문법 단위를 기준으로 예분을 분석한 결과 문장 중심 예문이 고등학교 문법 교과서의 경우 약 90.5%를 차지한 반면 중학교 교과서의 경우에는 담화 중심 예문이 약 44.5%의 높은 비중을 보였다. 둘째, 예문 완성도를 기준으로 살펴봤을 때 고등학교 문법 교과서에는 미완성형 예문이 전무하였으며 중학교 교과서에도 4%에 불과하였다. 셋째, 통합성을 기준으로 분석한 결과 고등학교 문법 교과서의 통합적 예문은 약 2.7%였고 중학교 문법 교과서의 통합적 예문은 약 16%였다. 두 교과서 모두에서 담화 중심 예문보다는 문장 중심 예문이, 통합적 예문보다는 독자적 예문이 그리고 미완성형 예문보다는 완성형 예문이 더 많이 나타났다. 그러나 그 구체적인 수치를 보았을 때 고등학교 「문법」교과서 보다는 중학교 「문법」교과서에서 담화 중심 예문, 통합적 예문, 미완성형 예문이 더 많이 나타나 예문 제시 방식의 차이를 보여주고 있다. 이러한 차이에 따른 실제적 교육 효과는 현장의 실험 연구를 통해 검증되어야 하겠으나 이러한 차이를 밝힌 것만으로도 문법 교육에 의미 있는 연구라 할 수 있겠다. The purposes of this report are to categorize example sentences by diverse criterions and to analyze how they affect on Korean grammar education. In order to analyze that effect, I set an object of this article to each grammar textbook of Middle School and High School. The criterions of categorizing are as below; This research finds that grammar textbook of middle school shows the more use of various example sentences than that of high school. And I conclude that showing the more example is effective way of grammar education.
박보현(Bo Hyun Park),정희석(Hee Seok Jung),이승환(Sung Hwan Lee) 대한산업공학회 2012 대한산업공학회지 Vol.38 No.1
Until now, most studies of foot moving or driving posture have been performed under laboratory driving conditions. But there are many different things between actual driving conditions and laboratory driving conditions because, in laboratory conditions, it is hard to consider vehicle’s noise, vibration and people’s psychology state while driving. Thus this study is performed through actual driving conditions. And while driving test, we recorded driver’s foots with 2 cameras to investigate foots(left and right) heel point and how human foots move to control the three pedals : accel, brake and footrest.. Through driving test, the results of this study show that the position of driver’s heel point isn’t related to stature and tends to be generalized.
박보현 ( Bo Hyun Park ),이태진 ( Tae Jin Lee ),박연서 ( Youn Seo Park ),김윤미 ( Yun Mi Kim ) 한국보건경제정책학회 2015 보건경제와 정책연구 Vol.21 No.4
To identify the relationship between the competitive intensity of the market and CS rates to help understanding the affecting factors on CS rates in hospitals. The data was extracted from delivery claims which were submitted to Health Insurance Review & Assessment Service by hospitals. A total of 419,547 mothers who delivered at 1,077 hospitals in 2006 were selected. Statistical regression techniques were used to identify the associations between intensity of competition and CS rates. The competitive intensity of general hospitals (HHI: 3,901) showed lower than medium-small hospitals (HHI: 4,255). In case of pooling model, the higher the competitive intensity of hospitals in the Korean delivery service market is, the higher the CS rate (OR for HHI 0.893, 95%CI 0.808-0.906). This result was identical in separate model. The competitive intensity between hospitals is determined to be one of the important nonclinical factors that affect the CS rates of healthcare hospitals.
박보현 ( Bo Hyun Park ) 한국문법교육학회 2011 문법 교육 Vol.15 No.-
This article aims to examine the teaching method for the interrogative in medieval Korean by selecting it among the contents on Korean language history education. It is important to educate the interrogative in medieval Korean to students, because there are something different between medieval and modern Korean. Until now it is too difficult to educate the contents on Korean language history. This makes students hesitate learning about it, although it has been taught in the classroom. Therefore I suggest the teaching method, jigsaw to education of interrogative in medieval Korean. It will arouse students` interest about Korean language history and improve the quality of teachers` instruction.