Peer review of pathology data on 13-week oral repeated toxicity study of Myristicae Semen

Da Hui Jeong,Do Hoon Kim,Min Jeong Lee,Ye Ji Bae,Kyu Baek Kim,Beom Seok Han 한국실험동물학회 2023 한국실험동물학회 학술발표대회 논문집 Vol.2023 No.2

A facile enzymatic synthesis of partial glycerides in an up-flow column reactor

Hui-da Wan,Xue-yi Hu,서양곤,Yong-Mei Xia 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.5

A facile solvent-free synthesis of partial glycerol caprylates/caprates was studied using an enzyme packed bed reactor (EPBR). In the up-flow EPBR, without addition of molecular sieves or vacuum, the highest conversion of caprylic acid reached 90.2% in 4 h. As a comparison, a same reaction executed in an enzyme batch reactor (EBR) present the highest conversion of caprylic acid of 88% in 9 h with similar reaction conditions. In addition, the EPBR represented a good operating stability than that in EBR. The conversion decrement was only 6.5% for caprylic acid and 4.5% for capric acid after 30 runs (180 h),respectively.

건강보험가입 유형에 따른 구강건강상태: 제7기 국민건강영양조사

김다희 ( Da-hui Kim ),최미현 ( Mi-hyun Choi ),이혜진 ( Hye-jin Lee ),민희홍 ( Hee-hong Min ),김영숙 ( Young-suk Kim ) 대한예방치과·구강보건학회 2020 大韓口腔保健學會誌 Vol.44 No.3

Objectives: This study was conducted to analyze dental caries and periodontal diseases in Korean adults depending on types of national health insurance, using data from the 7th Korea National Health and Nutrition Examination Survey (KNHANES Ⅶ). Methods: From 2016 to 2018, the final analysis included a total of 12,601 adults over 19 years of age, who had undergone dental inspections for dental caries and periodontitis, and whose national health insurance was verified. Results: Among all the subjects, the ratio of employees was highest (67.4%), followed by the self-employed (39.4%), and then medical care recipients (3.3%). The prevalence of dental caries and periodontitis was 93.0% and 30.5%, respectively, among all subjects. The former was highest for medical aid recipients (95.9%), followed by employees (93.1%), and was lowest for the self-employed (92.2%) (P<0.001). The latter was highest for medical aid recipients (40.7%), followed by the self-employed (35.9%), and was lowest for employees (27.7%) (P<0.001). The prevalence of dental caries in the self-employed group was significantly lower (0.52 times) than that of medical care recipients (95% CI: 0.28-0.94), while no significant difference was seen between the latter and employees. There were also no significant differences among them, depending on the types of national health insurance and periodontitis. Conclusions: It is necessary to develop oral health promotion programs that are not biased toward specific types of health insurance subscriptions, and to establish a business plan for oral prevention of subscribers of medical benefits.

임상실습교육에 대한 치위생(학)과 학생과 치과위생사의 교수효율성 분석

김다희(Da-Hui Kim),민경혜(Kyoung-Hye Min),이혜진(Hye-Jin Lee) 한국구강보건과학회 2020 한국구강보건과학회지 Vol.8 No.2

Objectives: The purpose of this study was to identify, compare and analyze the degree of awareness of teaching efficiency in clinical practice education of dental hygienists and dental hygiene students. Methods: The data collection was for dental hygienists with more than a year of experience working in Daejeon, Chungcheong and Gyeongsang regions from Oct. 1 to Oct. 30, 2019 and dental hygiene students who experienced clinical practice education. The statistical analysis was conducted using SPSS 25.0 program by frequency analysis, t-test, one-way ANOVA and correlation analysis. Results: Teaching efficiency of dental hygiene students was 3.59 point, while teaching efficiency of dental hygiene was 3.61 point. Satisfaction of clinical practice and job satisfaction were correlated with teaching efficiency. Conclusions: This study is data that can supplement prior research related to teaching efficiency, and has become basic data for the development of efficient clinical practice education programs.

프로바이오틱 세균인 Weissilla cibaria CMU의 구취 억제 효과

김다희 ( Da-hui Kim ),강미선 ( Mi-sun Kang ),여지은 ( Ji-eun Yeu ),이명구 ( Myung-gu Lee ),조자원 ( Ja-won Cho ) 대한예방치과·구강보건학회 2020 大韓口腔保健學會誌 Vol.44 No.4

Objectives: Previous studies have suggested that the lactic acid bacterium, Weissella cibaria CMU has beneficial effects on halitosis, but its precise effects have not been evaluated in human subjects. We evaluated the efficacy and safety of W. cibaria CMU for reducing halitosis in adults (20-70 years old) whose exhibited volatile sulfur compound (VSC) concentrations exceeded 0.015 ng/mL and who scored ≥2 points in a halitosis sensory evaluation test. Methods: A total of 60 participants were assigned to an experimental group (treated with W. cibaria CMU) and a control group (placebo). In total, 58 out of 60 participants (experimental group, 29; control group, 29) were ultimately included in gas chromatography (OralChroma) analyses of VSC concentrations and halitosis sensory evaluation tests. Results: We found that the VSC concentration decreased by 0.030±0.062 ng/ml in the experimental group after 8 weeks (P =0.0138) and increased by 0.005±0.124 ng/ml in the control group (P =0.8198). However, the difference between groups was not statistically significant (P>0.05). In a sensory evaluation test, a significantly lower score was obtained for the experimental group than for the control group. Conclusions: Overall, VSC concentrations and sensory evaluation scores were lower in the experimental group than in the control group, but only the latter was statistically significant. Thus, we conclude that W. cibaria CMU is involved in the reduction of halitosis.

영유아 자녀를 둔 외벌이 가정 부모가 겪는 양육 경험의 의미 탐색

진다희(Da-hui Jin),오채선(Chai-Sun Oh) 한국영유아교육과정학회 2022 영유아교육과정연구 Vol.12 No.2

본 연구는 영유아 자녀를 둔 외벌이 가정 부모가 겪는 양육 경험의 의미를 알아봄으로써 부모의 양육경험은 어떻게 나타나며 그 의미는 무엇인지 탐색해보고자 하는 것에 목적이 있다. 본 연구는 영유아 자녀를 둔 외벌이 가정의 부모와 아이들을 연구참여자로 선정하였다. 2021년 1월 23일부터 2021년 8월 21 일까지 총 19회 관찰과 면담이 이루어졌다. 면담, 참여관찰, 연구자 저널, sns, 메신저를 활용하여 자료를 수집하였다. 수집한 자료는 반복적 읽기와 분석 및 재해석 과정을 진행하였고 관련 전문가와의 면담, 동료검토 과정을 통해 연구결과의 신뢰도를 높였다. 본 연구에서 영유아 자녀를 둔 외벌이 가정 부모가겪는 양육 경험의 의미는 다음과 같았다. 첫째, 부모는 불확실성과 독대하고 있었다. 둘째, 부모는 ‘부모다움’의 어려움을 겪고 있었다. 셋째, 부모는 ‘나’자신을 단념하고 있었다. 넷째, 부모역할에 대해 끊임없이 배움이 일어나고 있었다. 이와 같은 결과 및 논의에 따른 결론은 다음과 같다. 첫째, 양육의 측면에서뿐만 아니라 사회에서 여전히 뿌리깊이 남아있는 남과 여, 어머니와 아버지에 대한 차별적 편견에 대해‘이해’가 아닌 ‘편견’에 마주할 수 있는 용기를 가질 수 있어야겠으며 양육에 대한 가치관 정립을 위한기회가 필요하다. 둘째, 이러한 고정관념의 해체를 바탕으로 모든 양육 상황 속에서 심리적, 신체적, 관계적 고립으로 인해 ‘자신’을 잃어간다고 여기는 부모를 위한 심리적 나눔과 공감의 기회가 필요하다. 셋째, 오직 ‘나’로부터 가족과 아이들에게 존재 이유의 중심이 전이되고 이러한 모든 양육의 과정이 ‘배움’의 여정 속에 함께하는 나눔과 공유의 기회가 필요하다. The purpose of this study is to explore how parents' parenting experiences appear and what they mean by examining the meaning of parenting experiences experienced by single-income parents with infants and children. In this study, parents and children of single-income families with infants and children were selected as study participants. A total of 19 observations and interviews were conducted from January 23, 2021 to August 21, 2021.…

Energy-saving optimization on active disturbance rejection decoupling multivariable control

Ding Da-Min,Yang Hai-Ma,Liu Jin,Zhang Da-Wei,Jiang Xiao-Hui 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.3

An industrial control process multiple-input multiple-output (MIMO) coupled system is analyzed in this study as an example of a Loss of Coolant Accident (LOCA) simulation system. Ordinary control algorithms can complete the steady state of the control system and even reduce the response time to some extent, but the entire system still consumes a large amount of energy after reaching the steady state. So a multivariable decoupled energy-saving control method is proposed, and a novel energy-saving function (economic function, Eco-Function) is specially designed based on the active disturbance rejection control algorithm. Simulations and LOCA simulation system tests show that the Eco-function algorithm can cope with the uncertainty of the multivariable system's internal parameters and external disturbances, and it can save up to 67% of energy consumption in maintaining the parameter steady state.

코로나 19로 인한 치위생과 학생들의 학업적 자기효능감 외로움이 스마트폰 과의존에 미치는 영향

김다희(Da-Hui Kim),윤미혜(Mi-Hae Yun) 한국구강보건과학회 2023 한국구강보건과학회지 Vol.11 No.1

Objectives: This study aimed to examine the relationships between smartphone addiction, academic self-efficacy, and loneliness among dental hygienist students and use the findings as a basic data to prevent the students’ smartphone addiction. Methods: A total of 232 dental hygienist students attending to School of Dentistry in Seoul, Gyeonggi, or Chungcheong were included in this study. Results: The results of the study showed that loneliness (β=0.202) was contributing the most to the dental hygienist students’ smartphone addiction, followed by academic self-efficacy (β=0.196) and self-reported smartphone addiction (β=-0.178). Conclusions: Further research is recommended on investigation of various factors that influence smartphone addiction during the COVID-19 pandemic, development of counselling centres for the dental hygienist students, and personalized counselling program for prevention of smartphone addiction.

학령기 아스퍼거 아동의 관용어 이해 특성

이다희(Da Hui Lee),고선희(Sun Hee Ko),황민아(Min A Hwang) 한국언어치료학회 2014 言語治療硏究 Vol.23 No.3

Purpose: Children with Asperger's syndrome seem to have the same linguistic and cognitive development as typical developmental children. But AS is a disorder that is characterized by significant difficulties in the pragmatic domain. The purpose of this study was to find the characteristics of idiom comprehension in children with AS, depending on the idiom's condition. Methods: The participants were 10 AS and 10 TD children in the second to third grade of elementary school. The children completed 20 idiom-related tasks that were composed of action meaning condition and emotion meaning condition idoms. We compared the difference between the groups and the conditions. Results: Participants in the AS group generally showed significantly lower levels of idiom understanding. In the comprehension of action idioms, both AS and TD groups had no significant difference in understanding the idioms, however in the comprehension of emotion idioms, AS participants showed a much lower ability to understand the idioms. Conclusion: According to the results of this study, people with AS can infer the meanings of some idioms but they have difficulty in comprehending, especially the meanings of emotion idioms because they have to connect the speaker's intention and emotion. Therefore, we have studied that this characteristic of AS could be related to a deficit of the theory of mind.

Ar/CF₄ 혼합가스를 이용한 유도결합 플라즈마 분석

왕태희(Tae-hui Wang),김상우(Sang-Woo Kim),유다희(Da-hui Yoo),이호준(Ho-Jun Lee) 대한전기학회 2022 대한전기학회 학술대회 논문집 Vol.2022 No.7