용접 보호복용 직물의 열과 수분 전달특성

하정은,전연희,안승국,Ha, Jung-Eun,Jeon, Youn-Hee,An, Seung-Kook 한국섬유공학회 2009 한국섬유공학회지 Vol.46 No.2

This study shows the thermal and moisture transfer properties of fabrics used in protective clothing for welders. The purpose of this study is to compare the performance of several fabrics used in protective clothing for welders by transfer test. The moisture transfer was affected by density and thickness of the materials. To improve emissions of water vapor, materials of lower density are suited for protective clothing. The air permeability was affected by coating agents. Silica coating has no effect on permeability of sample. On the other hand, aluminum coating has a bad influence on permeability. To improve air permeability, aluminum coated materials are not suited for protective clothing. Thermal characteristics of the materials were affected by density of the materials. Coated samples have high values of $Q_{max}$. $Q_{max}$ is warmth and coolness at instantaneous contact sense. If $Q_{max}$ shows high values, people feel cool skin sensation. The space of water and air makes the sample to have low values of heat transfer. To improve the effect of insulation, felt materials are suited for protective clothing. Felt materials are good heat blocker due to their high air contents.

일부 시판세치제의 비교치아마모도에 관한 연구

하정은 ( Jung Eun Ha ),강연주 ( Yeon Joo Kang ),진보형 ( Bo Hyoung Jin ),백대일 ( Dai Il Paik ),배광학 ( Kwang Hak Bae ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.1

Objectives. The purpose of this study was to measure the relative tooth abrasivity of the domestic dentifrices marketed in Korea. Methods. The authors measured the relative tooth abrasivity of thirty-two types of dentifrices. Assessment of tooth dentin abrasivity produced by different dentifrices was carried out on extracted bovine teeth in the laboratory and was tested by the surface profile measurement method. Calcium pyrophosphate was used as a reference abrasive and was assigned a score of 1.000 for the profilometry method. Results. The degree of the relative tooth abrasivity of the dentifrices varied from 0.048 to 1.095. The dentifrices were divided into 4 groups according to the Euclidean distance data mining. Conclusions. The abrasivity of all the tested dentifrices was at an acceptable level for consumers.

서울시 관내 학교 보건교사 대상 구강보건교육의 효과

하정은 ( Jung Eun Ha ),김영훈 ( Yong Hun Kim ),배광학 ( Kwang Hak Bae ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.3

Objectives. The purpose of this study was to assess the effectiveness of oral health education for school nurse in Seoul. Methods. This study is an 1-month follow-up intervention study which compares oral health knowledge and attitude between before and after oral health education. 318 school nurse participated in oral health education program and among them, 106 subjects completed the questionnaire. Paired t-test and multivariate linear regression were used to assess the effect of the explanatory factors on the improvement of oral health knowledge and attitude. Results. Oral health knowledge and attitude of school nurse were improved by oral health education. Multivariate analysis revealed that the contributing factors which lead improvement of oral health knowledge and attitude were the number of children and the degree of oral health attention. Conclusions. It was suggested that oral health education for school nurse had a significant beneficial effect on promoting oral health knowledge and attitude.

임부의 정기적인 인접면 세균막 관리와 치주건강상태간의 연관성

하정은(Jung-Eun Ha),김현정(Hyun-Jung Kim) 한국콘텐츠학회 2017 한국콘텐츠학회논문지 Vol.17 No.8

임부의 구강건강과 건강한 출산을 위하여 치주조직 감염을 적절하게 관리하기 위한 효율적인 임신기 구강건강관리법을 제시하고자, 임신부 319명을 대상으로 인접면 세균막 관리가 임상적 및 세균학적 치주조직 건강상태에 미치는 영향을 조사하였다. 그 결과, 정기적으로 인접면 세균막 관리를 시행하는 군보다 비정기적으로 관리하거나, 인접면 세균막 관리를 하지 않는 군에서 치은출혈 조직 수 및 치은염, 치주염 유병률이 더 높은 것으로 나타났다. 또한 인접면 세균막 관리를 정기적으로 시행하지 않을 경우, P. gingivalis가 더 많이 검출되는 것으로 나타났다. 결론적으로, 임부의 치실 및 치간솔 사용과 같은 인접면 세균막 관리는 임부의 치주조직건강을 효과적으로 향상시킬 수 있는 것으로 나타났다. The aim of this cross-sectional study was to investigate the relationship between regular interdental cleaning and periodontal condition. A total of 319 pregnant women were recruited at 21 to 24 weeks of gestation. Information on demographics, health status and health behaviors including regulary use of interdental cleaning aids, that can influence periodontal condition was collected. Full mouth periodontal probing was performed. Periodontitis was defined as CAL of 4.0 mm or greater on 2 or more sites not on the same tooth. Gingivitis was defined as 15 percent and more sites showed bleeding on probing. Gingival crevice fluid sample was collected for bacterial analysis. We studied a total of 319 subjects, comprised of 116 subjects who use interdental cleaning device regularly and 203 subjects who didn’t. Subjects who do not use interdental cleaning regularly had 2.3 times higher risk of gingivitis and 2.7 times of periodontitis, 2.3 times more amount of P. gingivalis. There was a significant relationship between regular interdental cleaning and periodontal condition in Korea.

임신 중기 임부의 치주병 관련 위험요인과 일부 치주병 병원체의 분포

하정은 ( Jung Eun Ha ),여보미 ( Bo Mi Yeo ),노희열 ( Hui Yul Roh ),백대일 ( Dai Il Paik ),배광학 ( Kwang Hak Bae ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4

Objectives. The objectives of this cross-sectional study were to examine the periodontal condition and health behavior of pregnant women and to analyze the distribution of periodontal pathogens by oral health behaviors. Methods. This study was designed as a hospital-based cross-sectional study. Pregnant women were recruited at about 24 weeks gestation from March 2009 to April 2010 at the obstetrics clinic of general hospital located in Seoul, South Korea. The information of demographic, behavior and health conditions that may influence periodontitis were collected. Full mouth periodontal probing was taken by one trained examiner for the diagnosis of periodontitis. The periodontitis was defined as periodontal attachment loss of 3.5 mm and over on 2 or more sites not on same tooth. Subgingival biofilm and gingival crevicular fluid were collected using two sterilized paper point (#20) for quantitative analysis of prevotella intermedia, porphyromonas gingivalis and treponema denticola. Results. One hundred thirteen pregnant women were included. Adjusted odds ratio of use the floss or interdental brush was 0.22. Pregnant women using the floss or interdental brush, and receiving the scaling before pregnancy had the lower level of T. denticola, P. gingivalis and P. intermedia than pregnant women who didn`t use the floss or interdental brush and not receive the scaling. Conclusions. Oral health behaviors, such as use the floss or interdental brush, may be enable to promote the women`s oral health and to prevent the preterm birth.

일부 지역 노인의치보철사업 수혜자의 보철 전,후 구강건강관련 삶의 질 변화

하정은 ( Jung Eun Ha ),한경순 ( Gyeong Soon Han ),김남희 ( Nam Hee Kim ),진보형 ( Bo Hyoung Jin ),김현덕 ( Hyun Duck Kim ),백대일 ( Dai Il Paik ),배광학 ( Kwang Hak Bae ) 대한예방치과·구강보건학회 2009 大韓口腔保健學會誌 Vol.33 No.2

Objectives: The purpose of this study was to evaluate the improvement of oral health related quality of life(OHRQOL) by receipting of the national senile prosthetic restoration program for national basic livelyhood security. Method: To evaluate oral health related quality of life(OHRQOL), the questionnaire for oral health impact profile(OHIP-14K) was distributed to 135 subjects twice, before and after they received the national senile prosthetic restoration program for national basic livelyhood security, and the collected data were utilized for investigating oral health related quality of life(OHRQOL). To asscess improvement factor of OHRQOL, Multivariate analysis was used. Results: After subjects received the program, sum of answering point of OHIP was decreased from 35.80 to 8.98(p<0.001). This result showed that conducting national senile prosthetic restoration program for national basic livelyhood security improved OHRQOL. Multivariate analysis revealed that the contributing factors which lead improvement of OHRQOL were age, whether wearing denture or not, self-perceived oral health, the number of retention teeth and subject with poor self-perceived oral health had higher the improvement of OHRQOL. Conclusion: National senile prosthetic restoration program improved OHRQOL. It is necessary to develop the aftercare and recipient selection process of this program by considering the subject characters for higher improvement of quality of life.

국민건강보험 요양급여자료를 이용한 한국 성인의 영구치 발거원인 구강상병 비중

하정은 ( Jung Eun Ha ),배광학 ( Kwang Hak Bae ) 대한예방치과·구강보건학회 2012 大韓口腔保健學會誌 Vol.36 No.1

Objectives: The object of this study was to determine the reasons for tooth extractions of permanent teeth in Korea. Methods: 2009 National patient samples (NPS) data were obtained for patients from the Health Insurance Review and Assessment (HIRA). We conducted a frequency analysis of the reasons for 93,176 permanent teeth extraction. Results: Overall, periodontal disease was the most frequent reason for tooth extraction (54.9%), followed by dental caries (38.4%). The males lost more teeth, due to periodontal disease than the females. In the below 30 age groups, caries was the main reason for tooth extraction. However, periodontal disease was remarkably increasing in those aged that were 30 year old and over. Conclusions: Most of the permanent teeth are extracted, due to caries and periodontal disease. Furthermore, there has been no efficient way of prevention for periodontal disease in public health activities, which targeted the population of the middle age group. Such method might be required.

치주병 선별검사를 위한 파노라마 방사선 사진 촬영법의 경제성 평가

하정은 ( Jung Eun Ha ),진보형 ( Bo Hyoung Jin ),김태일 ( Tai Il Kim ),이삼선 ( Sam Sun Lee ),백대일 ( Dai Il Paik ),배광학 ( Kwang Hak Bae ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.4

Objectives. This study was performed to estimate the economic effects of the dental panoramic radiography screening program from the year 2009 to 2018. Methods. To evaluate the economic effects of the screening program, this study used cost-benefit analysis methodology. The direct costs of treatment for the dental panoramic radiography screening program, periodontal examination and periodontal treatment and indirect cost of transportation over a time period of 10 years were quantified in this cost analysis. Furthermore, prevention of tooth loss through this screening program for 40-year-old periodontitis patients was considered among the benefits. Results. In triennial periodontal treatment type, total cost of the dental panoramic radiography screening program was 12,398,004,000∼13,683,802,000 Korean won and the total benefit was 35,135,260,000∼46,310,299,000 Korean won during this period of 10 years (Benefit/Cost ratio=2.83∼3.38). Conclusions. Economic impact of the dental panoramic radiography screening program was effective for adults aged 40 years in

흉기의 심리적 표상에 관한 연구

하정은(Jung Eun Ha),이현성(Hyunsung Lee),김범준(Beom Jun Kim) 충남대학교 사회과학연구소 2014 사회과학연구 Vol.25 No.2

This study aims to evaluate people’s risk perception of dangerous objects or weapons that can be used in a crime. It shows the difference between legal and general perception about what is a weapon. 356 students (male, 146) evaluated 60 objects according to 8 dimensions: frequency of use, usefulness, the possibility of injury by an object, experienced injury by an object, the extent of damage, controllability, threat level, availability on a crime. Then factor analysis was conducted for 8 dimensions using the method of Slovic, et al. (1987), to represent 60 objects to each dimension. As a result, 8 dimensions were summed up two major factors. One factor was the possibility of utility, and another factor was the perception of the potential risk. This result seemed to give a different sight of perceiving weapons in criminal justice system, showing several risk perception on a dangerous object. Taken together, it sounds proper to apply broader definition of a weapon and this will be able to provide a way to increase fairness and reliability of a trial.

Complement component 9 (C9) 유전자의 단일염기다형성과 버크셔 돼지 육질 형질과의 연관성 분석

하정임(Jeongim Ha),황정혜(Jung Hye Hwang),유고은(Go Eun Yu),박다혜(Da Hye Park),강덕경(Deok Gyeong Kang),김태완(Tae Wan Kim),박화춘(Hwa Chun Park),안상미(Sang Mi An),김철욱(Chul Wook Kim) 한국식품과학회 2018 한국식품과학회지 Vol.50 No.5

본 연구는 Berkshire 간 조직을 이용하여 RNA-sequencing 분석을 통해 돼지 육질 연관 단일염기다형성을 발굴하기 위해 수행되었다. 그 결과, C9 유전자의 cDNA 942번 G 서열이 T 서열로 변환되어 라이신(lysin)이 아스파라진(asparagin)으로 변하는 nonsynonymous SNP를 확인하였다. Berkshire 돼지 405두에서 C9 단일염기다형성의 유전자형을 분석한 결과 major allele는 G, minor allele은 T였다. Berkshire 돼지 405두의 육질 형질을 분석하여 C9 단일염기다형성의 유전자형과 육질 형질과의 연관성 분석한 결과 우성 모델의 경우 육색의 명도, 콜라겐, 수분, 도축 후 24시간 뒤 pH (pH<SUB>24 h</SUB>) 육질 형질에서 유의성이 확인되었고, 열성 모델의 콜라겐 함량, 공우성 모델의 육색의 명도(CIE L), 단백질, 콜라겐 함량에서 유의성을 가졌다. 성별에 따른 C9 유전자형과 육질 형질 간의 연관성을 분석한 결과 거세돈에서 도체중, 콜라겐에서 유의성이 있었으며, 암퇘지의 경우 육색의 명도, 단백질, pH<SUB>24 h</SUB> 육질 형질에서 유의성이 있었다. 육질 형질 중 pH<SUB>24 h</SUB> 형질은 육질을 결정하는 중요한 형질로 C9 유전자의 유전자형이 다른 유전자형들에 비해 pH<SUB>24 h</SUB>가 증가되고 육즙 손실이 감소되는 것으로 확인되어 C9 유전자의 TG 유전자를 가진 돼지가 더 좋은 육질을 가지는 것으로 판단된다. 본 결과를 바탕으로 C9 유전자의 단일염기다형성을 육질을 판단하는 생물마커(biomarker)로 의 활용이 기대된다. In this study, to identify single nucleotide polymorphisms (SNPs) associated with meat quality in Berkshire pigs, we performed RNA sequencing. A non-synonymous SNP (nsSNP) in the Complement component 9 (C9) gene was identified, and the association between meat quality traits and the C9 genotype was analyzed. The nsSNP in the C9 gene was located at c.942 G>T. In the dominant model, significant associations were observed between the SNP and meat quality traits such as CIE L, collagen content, moisture level, and pH<SUB>24 h</SUB>, whereas in the co-dominant model, significant associations were observed between the SNP and CIE L, collagen content, and protein content. In the recessive model, a significant association between the C9 genotype and the collagen content was observed. In addition, we identified the significant relationship between the C9 genotype and meat quality according to sex. These results indicate that the C9 SNP can be used as a genetic marker for improving pork quality.